10-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 

FORM 10-K

(Mark One)
x	ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the fiscal year ended December 31, 2015

OR

o	TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from              to

Commission File Number 001-36216

IDEAL POWER INC.

(Exact name of registrant as specified in its charter)

DELAWARE	14-1999058
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

4120 Freidrich Lane, Suite 100
Austin, Texas 78744

(Address of principal executive offices)

(Zip Code)

(512) 264-1542

(Registrant’s telephone number, including area code) 

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Name of each exchange on which each is registered
Common Stock, par value $0.001	NASDAQ Capital Market

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes o No x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§229.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company.

Large accelerated filer o	Accelerated filer o
Non-accelerated filer o	Smaller reporting company x
(Do not check if a smaller reporting company)

Indicate by check mark whether the issuer is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No x

State the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant’s most recently completed second fiscal quarter.

As of June 30, 2015, the aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the last sale price of the common equity was $51,870,059.

As of March 23, 2016 the issuer has 9,557,747 shares of common stock, par value $0.001, issued and outstanding. 

TABLE OF CONTENTS

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS AND OTHER INFORMATION CONTAINED IN THIS REPORT	3
PART I.
ITEM 1: BUSINESS	4
ITEM 1A: RISK FACTORS	11
ITEM 1B: UNRESOLVED STAFF COMMENTS	18
ITEM 2: PROPERTIES	18
ITEM 3: LEGAL PROCEEDINGS	18
ITEM 4: MINE SAFETY DISCLOSURES	18
PART II.
ITEM 5: MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES	19
ITEM 6: SELECTED FINANCIAL DATA.	20
ITEM 7: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	21
ITEM 7A: QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	23
ITEM 8: FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA	24
ITEM 9: CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE	38
ITEM 9A: CONTROLS AND PROCEDURES	38
ITEM 9B: OTHER INFORMATION	38
PART III.
ITEM 10: DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE	39
ITEM 11: EXECUTIVE COMPENSATION	39
ITEM 12: SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT	39
ITEM 13: CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE	39
ITEM 14: PRINCIPAL ACCOUNTING FEES AND SERVICES	39
PART IV.
ITEM 15: EXHIBITS	39
Signatures	40

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS AND
OTHER INFORMATION CONTAINED IN THIS REPORT

This report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and the provisions of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements give our current expectations or forecasts of future events. You can identify these statements by the fact that they do not relate strictly to historical or current facts. You can find many (but not all) of these statements by looking for words such as “approximates,” “believes,” “hopes,” “expects,” “anticipates,” “estimates,” “projects,” “intends,” “plans,” “would,” “should,” “could,” “may,” or other similar expressions in this report. In particular, these include statements relating to future actions, prospective products, applications, customers, technologies, future performance or results of anticipated products, expenses, and financial results. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from our historical experience and our present expectations or projections. Factors that could cause actual results to differ from those discussed in the forward-looking statements include, but are not limited to:

• our history of losses;

• our ability to achieve profitability;

• our limited operating history;

• emerging competition and rapidly advancing technology in our industry that may outpace our technology;

• customer demand for the products and services we develop;

• the impact of competitive or alternative products, technologies and pricing;

• The timing of growth, and the growth rate of, the less mature markets we have entered or may enter in the future;

• our ability to have any products we develop manufactured;

• the adequacy of protections afforded to us by the patents that we own and the cost to us of maintaining, enforcing and defending those patents;

• our ability to obtain, expand and maintain patent protection in the future, and to protect our non-patented intellectual property;

• our exposure to and ability to defend third-party claims and challenges to our patents and other intellectual property rights;

• general economic conditions and events and the impact they may have on us and our potential customers;

• our ability to obtain adequate financing in the future, as and when we need it;

• our success at managing the risks involved in the foregoing items; and

• other factors discussed in this report.

The forward-looking statements are based upon management’s beliefs and assumptions and are made as of the date of this report. We undertake no obligation to publicly update or revise any forward-looking statements included in this report. You should not place undue reliance on these forward-looking statements.

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ITEM 1: BUSINESS

Our Company

Ideal Power Inc. was formed in Texas on May 17, 2007 and converted to a Delaware corporation on July 15, 2013. Unless otherwise stated or the context otherwise requires, the terms “Ideal Power,” “we,” “us,” “our” and the “Company” refer to Ideal Power Inc.

We design, market and sell electrical power conversion products using our proprietary technology called Power Packet Switching Architecture (“PPSA”). PPSA is a power conversion technology that improves upon existing power conversion technologies in key product metrics, such as size, weight, cost, and efficiency. PPSA utilizes standardized hardware with application specific embedded software. Our advanced technology is important to our business and we make significant investments in research and development and protection of our intellectual property. At December 31, 2015, we have been granted 36 United States, three European, one Chinese and two other foreign patents.

We sell our products primarily to systems integrators for integration into their larger turn-key system which enable end users to manage their electricity consumption by reducing demand charges or fossil fuel consumption, integrating renewable energy sources and/or form their own microgrid. Our products are made by contract manufacturers to our specifications, enabling us to scale production to meet demand on a cost-effective basis without requiring significant expenditures on manufacturing facilities and equipment. As our products gain broader acceptance in the power conversion market, we intend to license our proprietary PPSA-based product designs to OEMs within our target markets, as well as license our technologies for other markets which we do not plan to enter directly.

Industry Background

Utility power grids are built using AC generation, transmission, and distribution resources. This method of power transmission and distribution has been proven over time to be reliable and safe. The outlets in a typical home or business are AC but many electrical devices, such as computers, televisions, and other appliances operate on DC power. Batteries and PV solar panels produce DC power as well. In order to connect DC devices to an AC power grid, a power conversion device is necessary.

We believe that significant changes in the supply of and demand for electrical power are driving demand for new energy infrastructure products and supporting technologies. In a traditional utility model, electrical power is generated from central stations and transmitted over long distance high-voltage transmission lines to substations where the voltage is reduced for distribution to consumers. Utility power grids are built to manage the flow of power in one direction, from generation to use, where sophisticated tools have been developed to match the amount of power being generated with the amount being consumed. Utilities ramp power plants up or down to closely match generation with load.

The rapid growth in worldwide renewable energy generation, such as wind and solar power, has added a new level of complexity to the task of matching power generation with consumption. These intermittent resources cannot be dispatched at will or relied upon to meet the peak power demands of the grid. Renewable energy sources tend to ramp up and down quickly. For example, a single cloud over a photovoltaic, or PV, farm can cause electrical output to change dramatically in a matter of seconds. These new challenges make it increasingly difficult for utilities to accurately forecast and meet peak power demands.

Increased peak demand for power also has exposed weaknesses in the existing power grid. In high-cost, high-demand states, such as California, public utilities have instituted peak demand charges as a way to ration power during periods of peak demand and to incentivize customers to shift their power consumption to off-peak times. At the same time, both the Federal and certain state governments have created incentive programs to encourage the development and implementation of alternative energy sources, such as solar and wind power, which has the perverse consequence of making peak demand more difficult to forecast and satisfy. Strains on the electric grid have resulted in significant brown-outs and black-outs that have heightened awareness of the vulnerabilities of the existing system. As a result, power consumers are turning to new technologies to manage their energy consumption, lower costs and assure a reliable source of supply. We believe that distributed generation with advanced power conversion systems, such as our PPSA products, has become an increasingly important element of this new infrastructure.

In response to these changes in the market for electrical power, a number of technologies have been developed to enable users to more effectively manage their consumption and, one of these technologies, energy storage systems, has emerged as the best way to mitigate the instabilities and market inefficiencies caused by these emerging power grid realities. For example, a commercial business can shift energy usage from peak to non-peak times by installing a battery energy storage system, or BESS. The commercial business can use electricity generated during off-peak hours to charge the BESS and then use the stored power to satisfy all or part of its demand during peak hours. Similarly, a commercial business can install a solar power system to generate power for use either immediately upon generation or for storage in a BESS for later use.

Battery energy storage systems and many alternative energy sources provide power on a direct current, or DC, basis. However, the electric power grid and most electrical equipment operates on an alternating current, or AC, basis. Consequently, power conversion systems are required to convert power from DC to AC or from AC or DC as necessary to make the various components of the system function together. In addition to converting power, power conversion systems enable customers to regulate current, voltage and frequency while optimizing system resources such as batteries, PV and the utility power grid to reduce energy costs. Systems incorporating advanced power converters may also manage distributed grid energy storage and be used to create stand-alone microgrids to bring power to a business or residence if the main electrical grid, if one is present, is unavailable.

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BESS and alternative energy sources, such as solar or wind power, can only be connected to the existing power grid if they are electrically isolated to prevent power from flowing back into the grid and potentially damaging components of the power system or creating potential safety hazards. Traditionally, power conversion systems have been paired with heavy, wire-wound transformers to provide this isolation and thereby protect the grid. Additionally, power conversion systems based on traditional power conversion technologies use many other passive components which make them big, heavy, expensive and inefficient due to the large quantity of copper and magnetic material and hard-switching topologies. Transformer-less power conversion systems in battery applications on the other hand still require bulky transformers if connected from the grid and thus have many of the same drawbacks as transformer-based systems. Consequently, power conversion systems with transformers are relatively large, expensive to manufacture, ship and install and require larger spaces for installation and heat dissipation.

Our Technology

We believe PPSA is the only power conversion technology on the market that provides electrical isolation without the need for the transformer that conventional power conversion systems require to connect electrical devices such as energy storage systems to the grid. Electrical isolation is at the core of PPSA.

PPSA uses indirect power flow in which power flows through input switches and is temporarily stored in our proprietary AC link inductor. Our proprietary fast switching algorithms enable the transfer of quantum packets of power between ports in our system. As the AC link becomes charged, it disconnects from its input switches, resonates without being connected to either the input or output switches, and then reconnects to its output switches when it reaches the correct voltage and frequency for the application, providing true electrical isolation without the need for a transformer.

Figure 1: Schematic of PPSA Process

Transformer-based power conversion systems use continuous power flow that relies on relatively heavy and expensive magnetic components and bulk capacitors. Many of these traditional systems have custom hardware for specific applications and are not readily adaptable or customizable. Because they are relatively inefficient, these systems generate excess heat that causes electrical and thermal stresses resulting in drive component failures and losses. By contrast, our conversion technology eliminates the majority of the passive components of traditional power conversion systems, including transformers, inductors and bulk capacitors.

We believe PPSA offers several key advantages over traditional technologies, such as:

• Size and Weight:   PPSA architecture reduces size and weight by eliminating passive components such as transformers, inductors and bulk capacitors. Our 30kW power conversion system weighs 97 pounds. By contrast, similar transformer-based 30kW power conversion systems typically weigh over 600 pounds. 

• Efficiency:   Efficiency is the measure of power out of the power conversion system as a percentage of the power into the system. Thus, high efficiency systems use less power in the conversion process and supply more power for use. Our 30kW power conversion system efficient rating was 96.5% based on the California Energy Commission (“CEC”) weighted efficiency test. Our efficiency advantage is more pronounced when operating the system at relatively low rated power, which is more common in battery systems. 

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Figure 2: PPSA Size, Weight and Efficiency Comparison

• Cost:  Reduced weight results in lower material and manufacturing, transportation and installation costs.

• Safety:  Since PPSA provides isolation, it allows the systems in which it is used to be grounded. Non-grounded systems require additional safeguards to pass U.S. safety regulations, which increase system cost and reduce efficiency.

• Scalability/Flexibility:  PPSA is made from standard industry components, is battery agnostic and software driven, thus providing more scalability that enables rapid development cycles for new products and new applications. This same functionality provides ultimate flexibility for customers globally as it is capable of power conversion in both 50Hz and 60Hz AC current environments.

• Reliability:  PPSA enables a simplified product that eliminates many components, thereby eliminating potential sources of failure, and several common failure modes. These design features are likely to increase overall system reliability.

Products   

We have developed products commercializing PPSA and make these products available for sale both directly to customers and through distributors. We currently sell five power conversion products utilizing our patented PPSA technology. These products are described as follows:

• 30kW Battery Converter, which is certified for UL1741 conformance and is intended to be used for the commercial and industrial grid-tied distributed energy storage market. This battery converter is bi-directional, which means power can flow to or from batteries. This product is more efficient and approximately 1/4^th to 1/8^th the size and weight of similar transformer-based products.

• 30kW Grid-Resilient AC-DC Power Conversion System (“PCS”), which is certified for UL1741 conformance. This product is capable of power conversion in both 50Hz and 60Hz AC current environments and has the ability to form and manage a microgrid. This product is intended for customers who need a 30kW battery converter for use overseas or who need the additional capability to form a microgrid. This product is not a replacement for our 30kW battery converter but complements the existing product with additional features.

• 30kW Grid-Resilient AC-DC-DC Multi-Port PCS with two DC ports enabling two DC inputs, such as PV and batteries, with one power converter. This product is certified for UL1741 conformance. This product is capable of power conversion in both 50Hz and 60Hz AC current environments, and also has the ability to form and manage a microgrid. The key feature of this multi-port PCS is that it effectively pairs energy storage with a distributed generation resource to support critical loads or allow a building to disconnect from the utility power grid. This product received the “Electrical Energy Storage Award” for product innovation in 2014 at InterSolar Germany, the world’s largest solar exhibition, and was recognized as one of the 2015 top inverter products by Solar Power World Magazine.

• 125kW Grid-Resilient AC-DC PCS, which is certified for UL1741 conformance. This 125kW system has over four times the power of the 30kW product and is also able to convert in both 50Hz and 60Hz AC current environments and form and manage a microgrid. This product is a larger version of our 30kW grid-resilient AC-DC PCS for use in higher power applications.

• 125kW Grid-Resilient AC-DC-DC Multi-Port PCS for higher power applications with multi-port capabilities. This product has over four times the power of the 30kW multi-port PCS and is also able to convert in both 50Hz and 60Hz AC current environments as well as form and manage a microgrid. The product is primarily for off-grid and microgrid management applications currently, as we have not yet sought certification for UL1741 conformance, required for connection to the utilize grid in the United States, for this product. This product is currently in prototype production only. We intend to certify this product for UL1741 conformance in late 2016 or early 2017 for grid tied operation.

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Future Innovations

Variable Frequency Drives

We are developing a PCS for variable frequency drives (“VFD”) based on our core PPSA technology. We believe that this product, once commercialized, can be offered as a high-efficiency alternative to traditional VFDs which suffer from similar size, weight, and heat loss inefficiencies as those of traditional power conversion systems. A PPSA-based VFD may offer medium to large low-voltage motors a high quality drive that improves efficiency, costs less to manufacture and install, and reduces electrical noise and harmonics over traditional VFDs. Such a product could also open up new markets for VFDs where they may not be commercially viable today due to their size, efficiency, or power quality.

Bi-Directional Switches

 Our existing products incorporate multiple insulated gate bipolar transistors (“IGBTs”), which are power switches used in the process to convert power from one current form to another. IGBTs switch power in only one direction (DC to AC or AC to DC) and require the use of a blocking diode to prevent power from flowing back through the system. To enable our existing products to perform bi-directional power conversion, for each IGBT and diode used in our products, we must include a second IGBT and diode. These additional components have slight voltage drops that affect the electrical efficiency of our products and generate excess heat that must be dissipated. We have patented and are developing a new, highly efficient silicon switch called a bi-directional bipolar transistor (“B-TRAN”) that we believe will allow us to substitute one B-TRAN for two pairs of IGBTs and diodes used in our current products. Based on our software simulations, we believe that the B-TRANs can improve electrical efficiency in our power converters from approximately 96.5% to at or greater than 99.0%. The higher efficiency would substantially reduce the heat generated by the operation of our products. As a result, products incorporating B-TRANs will require less space for heat dissipation which would allow us to increase power density, or power per pound, and reduce material costs. We believe that these development efforts, if successful, will enhance the competitive position of our products. In addition, we believe the B-TRAN may potentially provide significant benefits for uses outside of our power converters as a potential replacement for IGBTs.

We received an award of $2.5 million from ARPA-E for the development of our bi-directional switch technology. Funds under the award have been spent and continuing development work is self-funded. The funding from ARPA-E was sufficient to develop and demonstrate advanced power switches in third party simulations and start the initial process development for fabrication of the devices. We expect to develop, manufacture and test initial prototypes of these switches in 2016.

Business Strategy

Our business strategy is to promote and expand the uses of PPSA initially through product development and product sales. To bring our products to market, we will seek out best-in-class partners who will distribute, white-label our products or integrate our innovative products into higher value systems resulting in multiple strategic sales channels for our PPSA based products and product designs. Although our primary market is the United States, we will increasingly target markets outside the United States. As our products gain broader acceptance in the power conversion market, we intend to license our proprietary PPSA-based product designs to OEMs within our target markets, as well as license our technologies for other markets which we do not plan to enter directly. The basis for this approach is the belief that OEMs may achieve higher product margins and gain more market share by providing PPSA-based products, which are differentiated from the traditional product offerings in the industry, to their customers. We believe such strategic relationships with key OEM licensees would enable us to reap the benefits of PPSA and gain market share more quickly than by strictly manufacturing and distributing our products.

Target Markets

Currently, our three primary markets are standalone storage, which represented a majority of our sales in 2015, PV + storage, and microgrids. Based on market studies and forecasts by Navigant Research and Zpryme Research & Consulting, these three markets combined are forecasted to grow to over $100 Billion by 2020. Assuming that power conversion systems represent approximately 17.5% of the system cost, a Company estimate, power conversion systems such as those made by Ideal Power are forecasted to account for nearly $18 billion of this market.

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Figure 3: Target Market Forecasts

Discussion of our Target Power Conversion Markets

Stand-Alone Storage Market

The stand-alone storage market is served by BESS. BESS are racks of batteries coupled with a power conversion system, such as those manufactured by us, to enable electric power to be captured, stored, and used in conjunction with electric power grids. These systems can be large, megawatt-scale systems operated by utilities to better manage their system resources, or smaller kilowatt-scale systems used by businesses and designed to enable these businesses to manage their power use and mitigate utility imposed “peak demand charges”, which are charges utilities levy on their business customers for delivery of power at peak usage times of the day, such as mid-afternoons in the summer. The growth of peak demand charges has been substantial over the past decade and now can make up 50% or more of a commercial utility bill in certain markets. This is a trend that is likely to continue as more intermittent resources are added to the utility power grid causing grid instability. Utilities and aggregators of distributed generation resources are also expected to adopt BESS due to the proliferation of renewables and to take advantage of additional value streams such as energy arbitrage, frequency regulation and ancillary services, infrastructure upgrade deferral and locational capacity.

There are strong economic incentives available to commercial and industrial consumers in major US markets such as California and New York in the form of reduced demand charges for installing a BESS and reducing peak consumption. There is also strong regulatory support for such systems. For example, California has issued a mandate for over 1,000 megawatts of new energy storage to be installed by 2020. Our 30kW and 125kW power conversion systems enable these BESS to connect to the utility power grid and, when paired with batteries, offer these customers a substantial cost saving opportunity on their monthly electric bill. This market is still in its early years, but we have established a strong brand and position in this market with our customers having many systems installed and operating today. Based on market studies and forecasts by Navigant Research and Zpryme Research & Consulting, this market is forecasted to grow 40% annually over the next five years and we believe it offers the highest value proposition today for our products.

We believe this market is beginning to grow beyond pilot installations to higher volume installations driven by the underlying economics of BESS to commercial and industrial customers. A good indicator of this is the availability of third party financing for BESS. Several of our customers have recently signed or announced financing deals for their BESS products, including Gexpro whose PowerIQ product is being commercially financed by a subsidiary of NextEra Energy Resources (NYSE: NEE).

We expect the cost of commercial and industrial BESS to continue to decline due primarily to lower battery costs and, as a result, expect significant expansion in the addressable market for these systems. We also believe the combination of lower BESS costs, third-party financing, increases in utility demand charges, and the continued entrance of large, established companies to the BESS space will all contribute to accelerating market growth for stand-alone storage.

PV + Storage Market

PV has one of the lowest levelized costs of energy for new electrical generation capacity and this is expected to remain true in the near term. We expect distributed PV to continue to be a high growth business as system costs have fallen dramatically over the past several years. As such, the economics of generating PV for local consumption is expected to remain strong for several more years, especially given the investment tax credit (“ITC”) extension passed by Congress in 2015 for solar energy production. One shortcoming of these distributed, behind-the-meter PV systems is that they require connection to the utility power grid in order to operate. For example, a business with PV on its roof will not, in most cases, benefit from the ability to generate power should the utility power grid go down. Another shortcoming of distributed PV systems is the instability they cause on the local power lines. Utility power grids were not designed to manage power inflow from the end of the lines. As such, distributed generation sources can lead to wide swings in line voltages when clouds pass and power output falls off, requiring the utility to ramp up its central power stations to make up for the shortfall in solar.

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Our grid-resilient PCS help resolve these shortcomings. For example, when a distributed PV system is connected to a BESS that includes one of our multi-port PCS, the business will benefit from the ability to form and manage a local microgrid powered by the PV system and BESS even when the utility power grid is down. This capability is attractive to electricity consumers who need to power critical loads even in a blackout. Our grid-resilient PCS are also equipped to meet evolving utility requirements for low voltage ride through and other key operating parameters, enabling the PV and BESS it connects to the grid to help stabilize the utility power grid when voltage or frequency fluctuates due to imbalances in load and supply.

Commercial and industrial BESS are able to generate value far beyond peak demand reduction. We believe our products will become increasingly attractive to co-locate BESS with distributed PV. IHS, a global research firm with a strong renewable industry focus, forecasts that global installations of grid-tied commercial BESS coupled with PV will grow 111% annually from near obscurity in 2014 to over 600 MW PV + storage systems by 2018.

According to their research, IHS believes that systems will be deployed in two principle configurations. The present configuration is to have separate BESS and PV systems tied together through the AC wiring, which is supported by all of our current products. A second, emerging configuration will be to place the BESS and the PV system behind a single PCS with two DC inputs. This configuration is forecast to improve efficiency, reduce costs, and allow PV harvesting when operating without a utility power grid present in microgrid mode. Our grid-resilient 30kW and 125kW multi-port PCS were designed specifically to enable this lower cost and more efficient second configuration.

Also according to IHS, the global PV industry is projected to grow from 45GW of annual installations in 2014 to 71GW in 2018. Providing a new generation of solutions with integrated energy storage will enable the PV industry to address new markets with high growth potential. These new PV + storage markets include providing backup power during blackouts, improving grid stability in high penetration PV areas and reducing fossil fuel consumption in remote and off-grid microgrids. In the event of a grid failure, grid-tied PV installations are not capable of operating independently. For example, during Superstorm Sandy many PV system owners were displeased to learn that their grid-tied PV installations would not power their home or business. Systems incorporating our multi-port PCS along with PV and a BESS will be capable of providing backup power during grid blackouts. We expect our multi-port PCS products to be attractive to existing customers as a low-cost system upgrade to improve integration of PV. We further expect our products to provide competitive solutions for these market requirements.

Microgrid Market

Over the next decade the greatest demand for new power generation capacity is likely to occur in regions such as Southeast Asia, Africa, the Middle East, and Central and South America. Remote communities and infrastructure in these regions are more likely to depend on expensive and polluting fossil fuel generation for their primary fuel supply and may not have a utility power grid in place to access high quality, reliable power.

In contrast to grid-tied BESS and PV applications that are likely to be North American installations, we believe off-grid BESS and PV opportunities will develop rapidly across these regions with the greatest demand for new power generation. IHS recently forecasted the off-grid and microgrid BESS installations with PV market to reach 400MW by 2018 with the majority of this growth coming from regions with less developed electricity infrastructure. We believe that our grid-resilient 30kW and 125kW multi-port PCSs offer superior solutions for these applications.

We believe that our award-winning multi-port power conversion architecture is a highly attractive solution for integrating BESS and renewables for both grid-tied and off-grid markets. Customer and industry forecasts indicate that these markets will grow dramatically in the coming years, and we expect to benefit from this growth. The benefits of our multi-port PCS in microgrid application is not limited to PV or renewable energy systems. Our products have been integrated into systems to manage a diesel generator and, in combination with batteries, to form and operate a microgrid using far less fuel, emitting far fewer pollutants, and providing better power quality than a diesel generator alone.

Other Markets

Although our technology may be suitable for other vertical markets within the global power conversion market landscape, we do not currently offer products for sale directly to other power conversion markets such as the VFD, uninterruptible power supply, rail, wind, or EV traction drive markets. Our products are suitable for use as PV inverters, and our first products were sold into this market, but this market is saturated with incumbents offering inverters that convert power in a single direction and are thus suitable solely for PV applications. As such, while we do have a number of PV inverters in field service today, the stand-alone PV inverter market is not a primary target market for us. As discussed above, we are instead focused on PV integrated BESS applications for our multi-port PCS products where the fullest potential of our technology can be realized.

In addition to the markets discussed above, we also have opportunities for market expansion into fast electric vehicle chargers in certain applications where our products’ compact size and multi-port capabilities can unlock value for the system integrator particularly in locations where battery storage is coupled with the charging system to eliminate demand charges or expand the charging systems response capabilities. We have provided PCS to multiple EV charging system integrators who have deployed initial projects using our products coupled with batteries at EV charging stations to prove out these concepts. As these initial installations begin to operate, the value propositions of these new opportunities will become clearer.

We plan to continue to monitor all power conversion markets for opportunities to create solutions for customers and unlock the broader value of our patented technology.

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Intellectual Property

We rely on a combination of patents, laws that protect intellectual property, confidentiality procedures, and contractual restrictions with our employees and others, to establish and protect our intellectual property rights. In addition, the software that is shipped with our products is encrypted. At December 31, 2015, we had 36 issued U.S. patents and six issued foreign patents. We also had over 100 additional pending U.S., foreign and international patent applications. We expect to continue to build our patent estate for both our core power conversion technology, our bi-directional switch technology and other technological developments that broaden the scope of our technology platform.

Customers

Although we are expanding our customer base and channels to market, we have historically been reliant on a small number of customers. For the year ended December 31, 2015, Sharp, Gexpro, GreenCharge Networks, and Coda Energy, accounted for 66% of net revenues. For the year ended December 31, 2014, Sharp, GreenCharge Networks and Coda Energy, accounted for 44% of product revenue. In addition, the Department of Energy, from which we received $579,079 in grant revenues, accounted for 32% of net revenue for the year ended December 31, 2014.

Sales and Marketing

We sell our products primarily to systems integrators for installation as part of a larger turn-key system providing the end user with a complete solution for managing their energy consumption. Our products are also sold through distribution channel partners. Before a system integrator agrees to specify our products in their systems, the integrator engages in a lengthy and time-consuming process of testing and evaluating our equipment for use, which typically may take from a few months to as long as a year.

For certain geographic markets and applications, we may seek to enter into licensing agreements that would enable licensees to build our products for sale in local markets or we may license product designs to global brands for specific applications.

Manufacturing and Supply

We use a contract manufacturer to manufacture our products to our specifications. We have an agreement with our contract manufacturer pursuant to which we provide them with a rolling forecast of our expected demand. Finished products are produced based on upon our forecast, and we have the ability to delay shipments for up to 18 months from the date of the purchase order. The initial three-year term of the agreement expires in October of 2017 and renews annually thereafter unless terminated. We believe there are many contract manufacturers that are qualified to manufacture our products to our specifications and we expect to add a second contract manufacturer in 2016.

Typically, our contract manufacturer is responsible for the sourcing of components and materials. We qualify sources for our components and materials. Our strategy is to have multiple suppliers for all of our components and materials. Currently, we have multiple sources for most of our components. A very limited number of components are singled sourced and the process of identifying and qualifying alternative sources for these components is underway.

Backlog

Our backlog was approximately $5.2 million at December 31, 2015, a 160% increase from our backlog of $2 million at December 31, 2014. The Company defines backlog as consisting of accepted orders from customers for which a product delivery schedule has been specified. The purchased orders comprising backlog are not cancellable in most cases and such orders do not provide price protection. Nevertheless, deliveries against received purchase orders may be rescheduled within negotiated parameters and our backlog may therefore not be indicative of the level of future sales.

Competition

We will compete against well-established incumbent power conversion technology providers as these competitors enter the commercial and industrial markets. For our target markets, we believe that PPSA provides significant competitive advantages compared to the traditional power conversion solutions sold by well-established power conversion technology providers.

Transformer Based:  Transformer-based power conversion systems are the conservative choice, as they are proven and have been commercially available longer than any other type of power conversion system. They provide isolation, but are big, heavy, and relatively inefficient. There have been improvements in the efficiency of transformer-based power conversion systems over the years, but we believe further improvements are limited due to the physical characteristics of transformers themselves. Major suppliers in this market include ABB, Eaton, and Schneider Electric.

Transformerless PV Inverters: Transformerless photovoltaic (PV) solar inverters are a special class of power conversion system applicable only to PV arrays. They have become a popular choice in the market for distributed PV applications, as they are lighter and more efficient than transformer based inverters. These transformerless inverters are one-way (DC to AC) inverters, and provide no electrical isolation. PV systems are not required to be electrically isolated in most electrical code jurisdictions. These PV inverters have no applicability to markets that require electrical isolation, which includes every application in the electrical power conversion industry in which we compete. Key providers of transformerless PV inverters include companies such as SMA and SolarEdge.

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Research and Development Costs

Grant research and development are costs incurred solely related to grant revenues, and are classified as a line item under cost of revenues. Other research and development costs are presented as a line item under operating expenses and are expensed as incurred. Total research and development costs incurred during the year ended December 31, 2015 amounted to $5,521,390, none of which was included in cost of revenues. Total research and development costs incurred during the year ended December 31, 2014 amounted to $2,983,648, inclusive of $643,421 related to grant research which was included in cost of revenues.

Employees

As of February 29, 2016, we have 28 full-time employees. None of these employees are covered by a collective bargaining agreement, and we believe our relationship with our employees is good.

Industry Certifications

Industry certifications are generally required for our products. The main certification requirement is conformance to UL1741, which specifies standards for grid and product safety for grid-connected generation equipment, including the power conversion systems made by us. A National Recognized Testing Laboratory (“NRTL”) must certify our products for conformance to UL1741 before our customers may install and use our products in grid-tied applications in the United States.

We have chosen Intertek, an NRTL, for our certification requirements and have completed testing and received authorization to use their ETL mark on our products. While we have been able to complete these certifications timely, we may not be as successful in completing certification in a timely manner on future products, which could limit our ability to bring such products to market in a timely manner.

Europe, Japan and other major countries have different certification test procedures, but generally test for similar safety and performance capabilities. Local certifications are likely to be required to sell our products outside of the United States for many applications. To date, we have not received any international certifications on our products but have deployed products in a few instances in foreign countries as demonstrations, test projects in laboratories or microgrid applications which may be exempt from the certification requirements. We expect to start the certification process in one or more international markets in 2016.

Government Regulation

Government approval is not required for us to sell our products. However, government support for renewable energy, grid storage, electric vehicle charging infrastructure and improved grid resiliency may impact the size and growth rate of our target markets. Utility regulations and support may also impact these end markets. In the near term, government and utility support for these markets is generally required for these markets to grow and therefore changes in policy by governments or utilities may limit the near term market opportunities for our products.

Available Information

Our Internet address is www.idealpower.com and our investor relations website is located at ir.idealpower.com. We make available free of charge on our investor relations website under the heading “SEC Filings” our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports as soon as reasonably practicable after such materials are electronically filed with (or furnished to) the SEC. We also make available on our website, our corporate governance documents, including our code of conduct and ethics. Information contained on our website is not incorporated by reference into this Annual Report on Form 10-K. In addition, the public may read and copy materials we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. In addition, the SEC maintains an Internet site, www.sec.gov, that includes filings of and information about issuers that file electronically with the SEC.

ITEM 1A: RISK FACTORS

We are subject to various risks that may materially harm our business, prospects, financial condition and results of operations. An investment in our common stock is speculative and involves a high degree of risk. In evaluating an investment in shares of our common stock, you should carefully consider the risks described below, together with the other information included in this report.

The risks described below are not the only risks we face. If any of the events described in the following risk factors actually occurs, or if additional risks and uncertainties later materialize, that are not presently known to us or that we currently deem immaterial, then our business, prospects, results of operations and financial condition could be materially adversely affected. In that event, the trading price of our common stock could decline, and you may lose all or part of your investment in our shares. The risks discussed below include forward-looking statements, and our actual results may differ substantially from those discussed in these forward-looking statements.

Risks Related to Our Business

We lack an established operating history on which to evaluate our business and determine if we will be able to execute our business plan. We have also incurred losses in prior periods, expect to incur losses in the future and we can give no assurance that our operations will result in profits.

We were formed in Texas on May 17, 2007 and converted to a Delaware corporation on July 15, 2013. We have a limited operating history that makes it difficult to evaluate our business. Historical sales of our products have been in low volume, and we cannot say with certainty when we will begin to achieve profitability.

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Since inception, we have sustained $34,093,074 in net losses and we had a net loss for the year ended December 31, 2015 of $10,440,643. We expect to have operating losses at least until such time as we have developed a substantial and stable revenue base. We cannot assure you that we can develop a substantial and stable revenue base or achieve or sustain profitability on a quarterly or annual basis in the future.

As sales of our products have generated limited operating revenues, we have been funding operations primarily through the sale of common stock and, prior to our initial public offering, the issuance of convertible debt. If we are unable to execute our business plan, generate sustainable revenue and achieve profitable operations with our existing capital we would need to raise funds through equity or debt offerings and there can be no assurance that we will be able to do so.

Our future success is difficult to predict because we operate in emerging and evolving markets, and the industries in which we compete are subject to volatile and unpredictable cycles.

The grid energy storage, solar combined with storage, microgrid and related industries are emerging and evolving markets which may make it difficult to evaluate our future prospects and which may lead to period to period variability in our operating results. Our products are based on unique technology which we believe offers significant advantages to our customers, but the markets we serve are in a relatively early stage of development and it is uncertain how rapidly they will develop. It is also uncertain whether our products will achieve high levels of demand and acceptance as these markets grow. If companies in the industries we serve do not perceive or value the benefits of our technologies and products, or if they are unwilling to adopt our products as alternatives to traditional power conversion solutions, the market for our products may not develop or may develop more slowly than we expect, which could significantly and adversely impact our operating results.

As a supplier to the grid energy storage, solar combined with storage, microgrid and related industries, we may be subject to business cycles. The timing, length, and volatility of these business cycles may be difficult to predict. These industries may be cyclical due to sudden changes in customers’ manufacturing capacity requirements and spending, which depend in part on capacity utilization, demand for customers’ products, inventory levels relative to demand, and access to affordable capital. These changes may affect the timing and amounts of customers’ purchases and investments in technology, and affect our orders, net sales, operating expenses, and net income. In addition, we may not be able to respond adequately or quickly to the declines in demand by reducing our costs. We may be required to record significant reserves for excess and obsolete inventory as demand for our products changes.

To meet rapidly changing demand in each of the industries we serve, we must effectively manage our resources and production capacity. During periods of decreasing demand for our products, we must be able to appropriately align our cost structure with prevailing market conditions, effectively manage our supply chain, and motivate and retain key employees. During periods of increasing demand, we must have sufficient manufacturing capacity and inventory to fulfill customer orders, effectively manage our supply chain, and attract, retain, and motivate a sufficient number of qualified individuals. If we are not able to timely and appropriately adapt to changes in our business environment or to accurately assess where we are positioned within a business cycle, our business, financial condition, or results of operations may be materially and adversely affected.

To date we have had a limited number of customers. We cannot assure you that our customer base will increase.

We had revenue from four customers which accounted for 66% of net revenue for the year ended December 31, 2015. One of these customers, Coda Energy, which accounted for 10% of net revenue, declared bankruptcy in December 2015. We had receivable balances from three customers that accounted for 66% of trade receivables at December 31, 2015. As we sell our products to a limited number of customers, we cannot assure you that our customer base will expand or that any decline in net revenue attributable to customer losses will be replaced in a timely manner.

Product development is an inherently uncertain process, and we may encounter unanticipated development challenges and may not be able to meet our product development and commercialization milestones.

Product development and testing may be subject to unanticipated and significant delays, expenses and technical or other problems. We cannot guarantee that we will successfully achieve our milestones within our planned timeframe or ever. We commonly develop prototypes of planned products prior to the full commercialization of these products. We cannot predict whether prototypes of future products will achieve results consistent with our expectations. A prototype could cost significantly more than expected or the prototype design and construction process could uncover problems that are not consistent with our expectations. Prototypes of emerging products are a material part of our business plan, and if they are not proven to be successful, our business and prospects could be harmed.

More generally, the commercialization of our products may also be adversely affected by many factors not within our control, including:

• the willingness of market participants to try a new product and the perceptions of these market participants of the safety, reliability, functionality and cost effectiveness of our products;

• the emergence of newer, possibly more effective technologies;

• the future cost and availability of the raw materials and components needed to manufacture and use our products; and

• the adoption of new regulatory or industry standards that may adversely affect the use or cost of our products.

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Accordingly, we cannot predict that our products will be accepted on a scale sufficient to support development of mass markets for them.

We must achieve design wins to retain our existing customers and to obtain new customers, although design wins achieved do not necessarily result in substantial sales.

The constantly changing nature of technology in the markets we serve causes equipment manufacturers to continually design new systems. We must work with these manufacturers early in their design cycles to modify our equipment or design new equipment to meet the requirements of their new systems. Manufacturers typically choose one or two vendors to provide the components for use with early system shipments. Selection as one of these vendors is called a design win. It is critical that we achieve these design wins in order to retain existing customers and to obtain new customers.

We believe that equipment manufacturers often select their suppliers based on factors including long-term relationships and end user demand. Accordingly, we may have difficulty achieving design wins from equipment manufacturers who are not currently our customers. In addition, we must compete for design wins for new systems and products of our existing customers, including those with whom we have had long-term relationships. Our efforts to achieve design wins are time consuming, expensive, and may not be successful. If we are not successful in achieving design wins, or if we do achieve design wins but our customers’ systems that utilize our products are not successful, our business, financial condition, and results of operations could be materially and adversely impacted.

Once a manufacturer chooses a component for use in a particular product, it is likely to retain that component for the life of that product. Our sales and growth could experience material and prolonged adverse effects if we fail to achieve design wins. However, design wins do not always result in substantial sales, as sales of our products are dependent upon our customers’ sales of their products.

We have received grant funds from the United States for the development of a bi-directional switch. In certain instances, the United States may obtain title to inventions related to this effort. If we were to lose title to those inventions, we may have to pay to license them from the United States in order to manufacture the inventions. If we were unable to license those inventions from the United States, it could slow down our product development.

In conjunction with the Advanced Research Projects Agency-Energy, or ARPA-E, grant we received from the Department of Energy, we granted to the United States a non-exclusive, nontransferable, irrevocable, paid-up license to practice or have practiced for or on behalf of the United States inventions related to the bi-directional switch and made within the scope of the grant. If we fail to disclose to the Department of Energy an invention made with grant funds that we disclose to patent counsel or for publication, or if we elect not to retain title to the invention, the United States may request that title to the subject invention be transferred to it.

We also granted “march-in-rights” to the United States in connection with any bi-directional switch inventions in which we choose not to retain title, if those inventions are made under the ARPA-E grant. Pursuant to the march-in-rights, the United States has the right to require us, any person to whom we have assigned our rights, or any exclusive licensee to grant a non-exclusive, partially exclusive, or exclusive license in any field of use to a responsible applicant upon terms that are reasonable. If the license is not granted as requested, the United States has the right to grant the license if it determines that we have not achieved practical application of the invention in the field of use, the action is necessary to alleviate health or safety needs, the action is necessary to meet requirements for public use specified by Federal regulations and such requirements have not been satisfied, or the action is necessary because an agreement to manufacture the invention in the United States has not been obtained or waived or because any such agreement has been breached.

If we lost title to the United States as a result of any of these events, we would have to pay to license the inventions, if needed, to manufacture the bi-directional switch from the United States. If we were unable to license those inventions from the United States, it could slow down our product development.

As we continue to grow and to develop our intellectual property, we could attract threats from patent monetization firms or competitors alleging infringement. We may incur substantial costs as a result of litigation or other proceedings relating to patent and other intellectual property rights.

As we continue to grow and to develop our intellectual property, we could attract threats from patent monetization firms or competitors alleging infringement of intellectual property rights.

In addition, some of our competitors may be able to sustain the costs of complex patent litigation more effectively than we can because they have substantially greater resources. If we do not prevail in this type of litigation, we may be required to: pay monetary damages; stop commercial activities relating to our product; obtain one or more licenses in order to secure the rights to continue manufacturing or marketing certain products; or attempt to compete in the market with substantially similar products. Uncertainties resulting from the initiation and continuation of any litigation could limit our ability to continue some of our operations.

For instance, on October 4, 2013 we received a letter from a competitor alleging that the system architecture described on our website appeared to infringe on patents licensed to or held by the competitor. The letter asked that we explain why we believe that our technology does not represent an infringement. This competitor sent a subsequent letter on February 3, 2014 directly alleging our PPSA technology infringed upon one of the competitor’s patent. Following receipt of the first letter, we investigated the competitor’s claims and determined that their allegations were without merit. In early 2014, following our receipt of the February 3, 2014 letter, we met with the competitor to discuss their claims. No subsequent discussions have been held with, and no further correspondence has been received from, this competitor.

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We expect to license our technology in the future; however the terms of these agreements may not prove to be advantageous to us. If the license agreements we enter into do not prove to be advantageous to us, our business and results of operations will be adversely affected.

We expect to license the manufacture of our product designs for certain markets as well as license our technology for certain potential applications which we choose not to pursue directly through the sale of products. However, we may not be able to secure license agreements with customers on terms that are advantageous to us. Furthermore, the timing and volume of revenue earned from license agreements will be outside of our control. If the license agreements we enter into do not prove to be advantageous to us, our business and results of operations will be adversely affected.

Until recently, we have not devoted significant resources towards the marketing and sale of our products and we continue to rely on the marketing and sales efforts of third parties whom we do not control.

We expect that the marketing and sale of our battery converter and PCS products to end user customers will continue to be conducted primarily by a combination of system integrators, third-party strategic partners, distributors, and original equipment manufacturers, or OEMs. Consequently, commercial success of our products will depend, to a great extent, on the efforts of others. We may not be able to identify, maintain or establish additional and/or appropriate relationships in the future. We can give no assurance that these third parties will focus adequate resources on selling our products or will be successful in selling them. In addition, these third-parties have or may require us to provide volume price discounts and other allowances, customize our products or provide other concessions that could reduce the potential profitability of these relationships. Failure to develop sufficient customer, distribution and marketing relationships in our target markets will adversely affect our commercialization schedule and to the extent we have entered or enter into such relationships, the failure of our distributors and other third parties to assist us with the marketing and distribution of our products, or to meet their monetary obligations to us, may adversely affect our financial condition and results of operations.

A material part of our success depends on our ability to manage our suppliers and contract manufacturers. Our failure to manage our suppliers and contract manufacturers could materially and adversely affect our results of operations and relations with our customers.

We rely upon suppliers to provide the components necessary to build our products and on contract manufacturers to procure components and assemble our products. There can be no assurance that key suppliers and contract manufacturers will provide components or products in a timely and cost efficient manner or otherwise meet our needs and expectations. Our ability to manage such relationships and timely replace suppliers and contract manufacturers, if necessary, is critical to our success. Our failure to timely replace our contract manufacturers and suppliers, should that become necessary, could materially and adversely affect our results of operations and relations with our customers.

Our business may be dependent upon our ability to obtain financing. If we do not obtain such financing, we may have to cease our activities.

There is no assurance that we will operate profitably or generate positive cash flows in the future. In the future, we may require additional financing in order to sell our then current products and to continue the research and development required to develop our next generation of products. At that time, we may not be able to obtain financing on commercially reasonable terms or at all. If we do not obtain such financing when needed, our business could fail.

The macro-economic environment in the United States and abroad has adversely affected, and may in the future adversely affect, our ability to raise capital, which may potentially impact our ability to continue our operations.

As a company with limited revenues to date, we may need to rely on raising funds from investors to support our future research and development activities and our operations. Macro-economic conditions in the United States and abroad may result in a tightening of the credit markets and/or less capital available for small public companies, which may make it more difficult to raise capital. If we are unable to raise funds as and when we need them, we may be forced to curtail our operations or even cease operating altogether.

We are subject to credit risks.

Some of our customers may experience financial difficulties and/or may fail to meet their financial obligations to us. As a result, we may incur charges for bad debt provisions related to some trade receivables. In addition, in connection with the growth of the renewable energy market and other markets for our products, we are gaining new customers, some of which have relatively short histories of operations or are newly formed companies. As a result, it is difficult to ascertain financial information in order to appropriately extend credit to these customers. Further, the volatility in the renewable energy market may put additional pressure on our customers’ financial positions, as they may be required to respond to large swings in revenue. The renewable energy industry has also, from time to time, seen an increasing amount of bankruptcies and reorganizations as the availability of financing has diminished. In 2015, two of our customers filed for bankruptcy. Although we have limited credit losses related to these bankruptcies, our December 31, 2015 backlog and near term future revenue were impacted by the bankruptcy of Coda Energy, one of these two customers.

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If customers fail to meet their financial obligations to us, or if the assumptions underlying our recorded bad debt provisions with respect to receivables obligations do not accurately reflect our customers’ financial condition and payment levels, we could incur write-offs of receivables in excess of our provisions, which could have a material adverse effect on our cash flow and operating results.

We may not be able to control our warranty exposure, which could increase our expenses.

We currently offer and expect to continue to offer a warranty with respect to our products and we expect to offer a design warranty under future licensing agreements, if any. Due to our limited long-term history of operating data, our reserve is estimated based on engineering judgment and third party assessments of our product reliability. If the cost of warranty claims exceeds any reserves we may establish for such claims, our results of operations and financial condition could be adversely affected.

We may be exposed to lawsuits and other claims if our products malfunction, which could increase our expenses, harm our reputation and prevent us from growing our business.

Any liability for damages resulting from malfunctions of our products could be substantial, increase our expenses and prevent us from growing or continuing our business. Potential customers may rely on our products for critical needs and a malfunction of our products could result in warranty claims or other product liability. In addition, a well-publicized actual or perceived problem could adversely affect the market’s perception of our products. This could result in a decline in demand for our products, which would reduce revenue and harm our business. Further, since our products are used in systems that are made by other manufacturers, we may be subject to product liability claims even if our products do not malfunction.

We are highly dependent on the services of R. Daniel Brdar and William Alexander, as well as other key members of our executive management team. Our inability to retain these individuals could impede our business plan and growth strategies, which could have a negative impact on our business and the value of your investment.

Our ability to implement our business plan depends, to a critical extent, on the continued efforts and services of R. Daniel Brdar, our Chief Executive Officer and President, William Alexander, our founder and Chief Technology Officer, and other members of our executive management team. If we lose the services of any of these persons during this important time in our development, the loss may result in a delay in the implementation of our business plan and plan of operations. We can give no assurance that we could find satisfactory replacements for these individuals on terms that would not be unduly expensive or burdensome to us. We do not currently carry a key-man life insurance policy that would assist us in recouping our costs in the event of the death or disability of any of these persons.

 Any failure by management to properly manage our expected rapid growth could have a material adverse effect on our business, operating results and financial condition.

If our business develops as expected, we anticipate that we will grow rapidly in the near future. Our failure to properly manage our expected rapid growth could have a material adverse effect on our ability to retain key personnel. Our expansion could also place significant demands on our management, operations, systems, accounting, internal controls and financial resources. If we experience difficulties in any of these areas, we may not be able to expand our business successfully or effectively manage our growth. Any failure by management to manage growth and to respond to changes in our business could have a material adverse effect on our business, financial condition and results of operations.

Backlog may not result in revenue.

Our backlog was approximately $5.2 million at December 31, 2015. We define backlog as consisting of accepted orders from customers for which an expected product delivery schedule has been specified. The purchase orders comprising backlog are not cancellable in most cases and such orders generally do not provide price protection. Nevertheless, deliveries against received purchase orders may be rescheduled within negotiated parameters and our backlog may, therefore, not be indicative of revenues in any given period.

Risks Relating to the Industry

The electric power conversion industry is competitive, has a number of well-financed incumbents and may see a significant number of new market entrants. We cannot guarantee that we can compete successfully.

We may compete against providers of PCS that are well established and have substantially greater assets, including manufacturing, marketing, and financial assets. These incumbents also have strong market share and name brand recognition in the industry. Potential competitors include ABB, Ltd., Eaton Corporation plc, SMA Solar Technology AG, and Schneider Electric SE. Pricing and servicing, as well as the general quality, efficiency and reliability of products, are significant competitive criteria in this industry. New market entrants may offer competitive new technologies and products, and may also contribute to significant price competition.

Our ability to successfully compete on each of these criteria is material to the acceptance of our products and their future profitability. In addition, the industry may resist new technology and products from suppliers that are not well capitalized with long track records of performance. Our competitors use their balance sheet and brand recognition to their competitive advantage. Should our products become commercially successful, competitors may seek to drive their own innovation and adopt or copy ideas, designs and features to regain their competitive positions. Incumbent or new competitors may develop or offer technologies and products that may be more effective or popular than our products and these competitors may be more successful in marketing their products than we are in marketing our products. Additionally, price competition may result in lower than expected margins for our products.

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We expect to compete on the basis of our products’ lower cost, smaller footprint, higher efficiency, and technological innovation, flexibility and features. Unrelated technological advances in alternative energy products or other power conversion technologies may negatively impact the development of our products or make our products uncompetitive or obsolete at any time. We cannot guarantee that we will be able to compete successfully in the electric power conversion industry.

Our business is substantially dependent on utility rate structures and government incentive programs that encourage the use of alternative energy sources. The reduction or elimination of government subsidies and economic incentives for energy-related technologies would harm our business.

We believe that near-term growth of energy-related technologies, including power conversion technology, relies partly on the availability and size of government and economic incentives and grants (including, but not limited to, the U.S. Investment Tax Credit and various state and local incentive programs). These incentive programs could be challenged by utility companies, or for other reasons found to be unconstitutional, and/or could be reduced or discontinued for other reasons. The reduction, elimination, or expiration of government subsidies and economic incentives could harm our business.

A combination of utility rate structures and government subsidies that encourage the use of alternative energy sources is a primary driver of demand for our products. For example, public utilities are often allowed to collect demand charges on commercial and industrial customers in addition to traditional usage charges. In addition, the federal government and many states encourage the use of alternative energy sources through a combination of direct subsidies and tariff incentives such as net metering for users that use alternative energy sources such as solar power. California also encourages alternative energy technology through its Self-Generation Incentive Program, or SGIP, which offers rebates for businesses and consumers who adopt certain new technologies. As a result of these incentives, we believe that a substantial portion of the products we have sold have been for use by end customers in California. Other states have similar incentives and mandates which encourage the adoption of alternative energy sources. Notwithstanding the adoption of other incentive programs, we expect that California will be the most significant market for the sale of our products in the near term for stand-alone storage applications. Should California or another state in which we derive a substantial portion of our product revenues in the future change its utility rate structure or eliminate or significantly reduce its incentive programs, demand for our products could be substantially affected, which would adversely affect our business prospects, financial condition and operating results.

Changes to the National Electrical Codes could adversely affect our technology and products.

Our products are installed by system integrators that must meet the National Electrical Codes, or NEC, standards, including using equipment that meets industry standards such as UL1741. The NEC standards address the safety of these systems. The NEC standards, along with the UL1741 and IEEE1547 requirements, continue to evolve and are subject to change. If we respond to these changing standards and requirements more slowly than our competitors, or if we are unable to meet new standards and requirements, our products will be less competitive.

New technologies in the alternative energy industry may supplant our current products and technology in this market, which would harm our business and operations.

The alternative energy industry is subject to rapid technological change. Our future success will depend on the cutting edge relevance of our technology, and thereafter on our ability to appropriately respond to changing technologies and changes in function of products and quality. If new technologies supplant our power conversion technology, our business would be adversely affected and we will have to revise our plan of operation.

Businesses, consumers, and utilities might not adopt alternative energy solutions as a means for providing or obtaining their electricity and power needs.

On-site distributed power generation solutions that utilize our products provide an alternative means for obtaining electricity and are relatively new methods of obtaining electrical power. There is a risk that businesses, consumers, and utilities may not adopt these new methods at levels sufficient to grow our business. Traditional electricity distribution is based on the regulated industry model whereby businesses and consumers obtain their electricity from a government regulated utility. For alternative methods of distributed power to succeed, businesses, consumers and utilities must adopt new purchasing practices and must be willing to rely upon less traditional means of providing and purchasing electricity. As larger solar projects come online, utilities are becoming increasingly concerned with grid stability, power management and the predictable loading of such power onto the grid.

We cannot be certain that businesses, consumers, and utilities will choose to utilize on-site distributed power at levels sufficient to sustain our business. The development of a mass market for our products may be impacted by many factors which are out of our control, including:

• market acceptance of systems that incorporate our products;

• the cost competitiveness of these systems;

• regulatory requirements; and

• the emergence of newer, more competitive technologies and products.

If a mass market fails to develop or develops more slowly than we anticipate, we may be unable to recover the costs we will have incurred to develop these products.

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Our sales cycle is lengthy and variable, which makes it difficult for us to accurately forecast revenue and which may affect our quarterly results.

The sales cycle for our products is typically lengthy and unpredictable, which makes it difficult for us to accurately forecast revenues in a given period, and may cause revenue and operating results to vary significantly from period to period. We currently sell our products primarily to system integrators that integrate our products into larger “turn-key” solutions for their customers. Before system integrators agree to specify our products in their systems, the integrators engage in a lengthy and time-consuming process of testing and evaluating our equipment. This process can take from a few months to as long as a year. Even if our products are approved for use by a system integrator, the system integrator may not place an order for our equipment until the system integrator has entered into a contract with the end user for the design and installation of the system. In many cases, the system integrator is required to respond to a detailed request for proposal or to submit a proposal before a contract for the system is executed. As a result, there may be a significant period of time between the time our products are approved for use by a particular system integrator and the time we record revenue from the sale of our products. As a result of potentially lengthy sales cycles, we may have difficulty in accurately predicting our operating results for any given period, and may experience significant unanticipated fluctuations in our revenues from period to period. Any failure to achieve anticipated revenues for a period could adversely affect our operating results and the market price of our common stock.

Our revenue and operating results for any quarterly reporting period may fluctuate significantly depending on the timing of the delivery of our products.

Our revenue from product sales has resulted from the sale of a relatively low volume of units to a limited number of customers. As a result, a change in the expected delivery date for a particular customer order could have a significant impact on our quarterly revenues and operating results. Although we maintain a small finished goods inventory, in most cases products are produced for us by our contract manufacturer in response to a particular customer order. Because of our varying sales cycles, our manufacturing lead times and the limited to moderate flexibility in rescheduling delivery dates we provide to our customers, we may not be able to accurately predict the timing of the delivery of a particular order. Significant unanticipated fluctuations in our revenues from period to period could adversely affect our operating results and the market price for our common stock.

Risks Related to Owning Our Common Stock

The public market for our common stock may be volatile. This may affect the ability of our investors to sell their shares as well as the price at which they sell their shares.

The market price for the shares may be significantly affected by factors such as variations in the volume of trading activity, quarterly and yearly operating results, general trends in the alternative energy industry or other markets we serve, and changes in state or federal regulations affecting us and our industry. Furthermore, in recent years the stock market has experienced extreme price and volume fluctuations that are unrelated or disproportionate to the operating performance of the affected companies. Such broad market fluctuations may adversely affect the market price of our common stock.

We have the right to issue shares of preferred stock. If we were to issue preferred stock, it is likely to have rights, preferences and privileges that may adversely affect the common stock.

We are authorized to issue 10,000,000 shares of “blank check” preferred stock, with such rights, preferences and privileges as may be determined from time-to-time by our board of directors. Our board of directors is empowered, without stockholder approval, to issue preferred stock in one or more series, and to fix for any series the dividend rights, dissolution or liquidation preferences, redemption prices, conversion rights, voting rights, and other rights, preferences and privileges for the preferred stock. No shares of preferred stock are presently issued and outstanding and we have no plans to issue shares of preferred stock. The issuance of shares of preferred stock, depending on the rights, preferences and privileges attributable to the preferred stock, could reduce the voting rights and powers of the common stock and the portion of our assets allocated for distribution to common stockholders in a liquidation event, and could also result in dilution in the book value per share of the common stock we are offering. The preferred stock could also be utilized, under certain circumstances, as a method for raising additional capital or discouraging, delaying or preventing a change in control of the Company, to the detriment of the investors in the common stock offered hereby. We cannot assure you that we will not, under certain circumstances, issue shares of our preferred stock.

We have not paid dividends in the past and have no immediate plans to pay dividends.

We plan to reinvest all of our earnings, to the extent we have earnings, in order to market our products and to cover operating costs and to otherwise become and remain competitive. We do not plan to pay any cash dividends with respect to our securities in the foreseeable future. We cannot assure you that we would, at any time, generate sufficient surplus cash that would be available for distribution to the holders of our common stock as a dividend. Therefore, you should not expect to receive cash dividends on our common stock.

We incur significant costs as a result of becoming a public company that reports to the Securities and Exchange Commission and our management is required to devote substantial time to meet compliance obligations.

As a public company reporting to the Securities and Exchange Commission, we incur significant legal, accounting and other expenses. We are subject to reporting requirements of the Exchange Act and the Sarbanes-Oxley Act, as well as rules subsequently implemented by the Securities and Exchange Commission that impose significant requirements on public companies, including requiring establishment and maintenance of effective disclosure and financial controls and changes in corporate governance practices. Our management and other personnel are required to devote a substantial amount of time to these and other new compliance initiatives. In addition, we believe these rules and regulations may make it more costly for us to obtain director and officer liability insurance, and we may be required to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage in the future. As a result, it may be more difficult for us to attract and retain qualified people to serve on our board of directors, our board committees or as executive officers.

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Shares eligible for future sale may adversely affect the market for our common stock.

Sales of substantial amounts of our common stock in the public market, or the perception that these sales could occur, could cause the market price of our common stock to decline. These sales could also make it more difficult for us to sell equity or equity-related securities in the future at a time and price that we deem appropriate.

At December 31, 2015, we had 9,549,544 shares of common stock outstanding. Shares beneficially owned by our affiliates and employees are subject to volume and other restrictions under Rules 144 and 701 under the Securities Act of 1933, as amended, or the Securities Act, various vesting agreements, our insider trading policy and any applicable 10b5-1 trading plan. Shares that are not beneficially owned by our affiliates and employees generally can be freely sold in the public market, subject in some cases to restrictions under Rule 144.

At December 31, 2015, we had 2,846,325 potentially dilutive shares outstanding and we may grant additional options, stock-based awards and/or warrants in the future. If our stock price rises, the holders of vested options, stock-based awards or warrants may exercise their options, stock-based awards and/or warrants and sell a large number of shares. Any sale of a substantial number of shares of our common stock may have a material adverse effect on the market price of our common stock.

Our charter documents and Delaware law may inhibit a takeover that stockholders consider favorable.

Our Certificate of Incorporation, or Certificate, and bylaws and applicable provisions of Delaware law may delay or discourage transactions involving an actual or potential change in control or change in our management, including transactions in which stockholders might otherwise receive a premium for their shares, or transactions that our stockholders might otherwise deem to be in their best interests. The provisions in our Certificate and bylaws:

• authorize our board of directors to issue preferred stock without stockholder approval and to designate the rights, preferences and privileges of each class; if issued, such preferred stock would increase the number of outstanding shares of our capital stock and could include terms that may deter an acquisition of us;

• limit who may call stockholder meetings;

• do not permit stockholders to act by written consent;

• do not provide for cumulative voting rights; and

• provide that all vacancies may be filled by the affirmative vote of a majority of directors then in office, even if less than a quorum.

In addition, Section 203 of the Delaware General Corporation Law may limit our ability to engage in any business combination with a person who beneficially owns 15% or more of our outstanding voting stock unless certain conditions are satisfied. This restriction lasts for a period of three years following the share acquisition. These provisions may have the effect of entrenching our management team and may deprive you of the opportunity to sell your shares to potential acquirers at a premium over prevailing prices. This potential inability to obtain a control premium could reduce the price of our common stock. See “Anti-Takeover Effects of Certain Provisions of Delaware Law and Our Charter Documents” for additional information.

If securities or industry analysts do not publish or do not continue to publish research or reports about our business, or if they issue an adverse or misleading opinion regarding our stock, our stock price and trading volume could decline.

The trading market for our common stock is influenced by the research and reports that industry or securities analysts publish about us or our business. Presently, a number of securities analysts publish reports on us on a regular basis. If any of the analysts who cover us now or in the future issue an adverse opinion regarding our stock, our stock price would likely decline. If one or more of these analysts ceases coverage of our company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline.

ITEM 1B: UNRESOLVED STAFF COMMENTS

None. 

ITEM 2: PROPERTIES

Our principal office is located at 4120 Freidrich Lane, Suite 100, Austin, Texas 78744. We lease 14,782 square feet of office and laboratory space under a triple net lease. The lease commenced on June 1, 2014 and has a term of 48 months.

ITEM 3: LEGAL PROCEEDINGS

We are not a party to any pending legal proceedings.

ITEM 4: MINE SAFETY DISCLOSURES

Not applicable.

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ITEM 5: MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is quoted under the symbol IPWR on the NASDAQ Capital Market. The table below presents the range of high and low sales prices of our common stock for the years ended December 31, 2015 and 2014.

High and low sales prices
	High		Low
Fiscal year ended December 31, 2015
First quarter	$	10.21	$	5.93
Second quarter	$	11.53	$	7.75
Third quarter	$	8.55	$	6.10
Fourth quarter	$	9.65	$	6.45
Fiscal year ended December 31, 2014
First quarter	$	12.59	$	5.25
Second quarter	$	9.60	$	7.00
Third quarter	$	9.40	$	6.51
Fourth quarter	$	8.00	$	5.82

As of March 23, 2016 we had approximately 42 shareholders of record. The name, address and telephone number of our stock transfer agent is Corporate Stock Transfer, Inc., 3200 Cherry Creek South Drive, Suite 430, Denver, Colorado, 80209, (303) 282-4800.

Dividends

We have not paid any cash dividends on our common stock since our inception and do not anticipate paying any cash dividends in the foreseeable future. We plan to retain our earnings, if any, to provide funds for the expansion of our business.

Securities Authorized for Issuance under Equity Compensation Plans

The table below provides information, as of December 31, 2015, regarding our 2013 Equity Incentive Plan (the “Plan”) under which our equity securities are authorized for issuance to officers, directors, employees, consultants, independent contractors and advisors.

Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights (a)			Weighted-average exercise price of outstanding options, warrants and rights (b)		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (c)
Equity compensation plans approved by security holders		1,428,323	(1)	$	6.94		831,615	(2)

(1) This amount includes performance stock units (“PSU”) granted to employees.

(2) This amount will not be subject to future increases, absent shareholder approval of an increase in the securities authorized for issuance under the Plan.

Recent Issuances of Unregistered Securities

On February 17, 2015, the Company issued 939 shares of common stock to an option holder in connection with the exercise of an option. The per share exercise price was $2.97149 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On April 7, 2015, the Company issued 18,816 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $2.97149 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On May 5, 2015, the Company issued 9,710 shares of common stock to a warrant holder in connection with the exercise of a warrant. The per share exercise price was $3.47626 and the warrant was exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On May 6, 2015, the Company issued 11,957 shares of common stock to a warrant holder in connection with the exercise of a warrant. The per share exercise price was $3.47626 and the warrant was exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On July 1, 2015, the Company issued 7,000 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $5.00. The Company relied on the exemption provided by Rule 701 of the Securities Act of 1933 to issue the common stock.

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On September 1, 2015, we issued 3,293 shares of common stock to a warrant holder in connection with the exercise of a warrant. The per share exercise price was $3.47626 and the warrant was exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On September 11, 2015, we issued 14,383 shares of common stock to a warrant holder in connection with the exercise of a warrant. The per share exercise price was $3.47626. The Company relied on the exemption provided by Section 4(a)(2) of the Securities Act of 1933 to issue the common stock inasmuch as the warrant holder was an accredited investor and there was no form of general solicitation or general advertising relating to the offer.

On October 6, 2015, we issued 14,383 shares of common stock to a warrant holder in connection with the exercise of a warrant. The per share exercise price was $3.47626. The Company relied on the exemption provided by Section 4(a)(2) of the Securities Act of 1933 to issue the common stock inasmuch as the warrant holder was an accredited investor and there was no form of general solicitation or general advertising relating to the offer.

On October 28, 2015, we issued 1,988 shares of common stock to a warrant holder in connection with the exercise of a warrant. The per share exercise price was $3.47626 and the warrant was exercised on a cashless basis. The Company relied on the exemption provided by Section 4(a)(2) of the Securities Act of 1933 to issue the common stock inasmuch as the warrant holder was an accredited investor and there was no form of general solicitation or general advertising relating to the offer.

On October 29, 2015, the Company issued 3,733 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $5.00 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On November 5, 2015, we issued 49,003 shares of common stock to a warrant holder in connection with the exercise of several warrants. The per share exercise prices were $3.47626 and $4.34533 and the warrants were exercised on a cashless basis. We relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On November 9, 2015, the Company issued 6,083 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $6.3276 and $5.00 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On November 16, 2015, the Company issued 1,621 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $5.00 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On November 24, 2015, the Company issued 1,603 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $5.00 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On December 2, 2015, the Company issued 6,085 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise prices ranged between $0.79525 and $2.97149 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

On December 23, 2015, the Company issued 11,107 shares of common stock to an option holder in connection with the exercise of stock options. The per share exercise price was $2.97149 and the options were exercised on a cashless basis. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act of 1933 to issue the common stock.

Use of Proceeds

Our initial public offering of our common stock on registration statement number 333-190414, declared effective on November 21, 2013, raised approximately $15 million in net cash proceeds after expenses.

On May 20, 2015, we closed an underwritten follow-on offering of 2,225,825 shares, inclusive of the underwriter’s overallotment of 290,325 shares, of our common stock at a price of $7.75, before underwriting discounts and commissions. The offer and sale of all shares in the follow-on offering were registered under the Securities Act of 1933, as amended pursuant to a registration statement on Form S-3 (registration number 333-200661), which was declared effective on April 27, 2015, and raised approximately $15.9 million in net cash proceeds after expenses.

Through December 31, 2015, we used approximately $16 million of the net cash proceeds from our equity offerings. These funds were used as follows: $1.1 million for protection of our intellectual property, $1.1 million for purchase of equipment and software and the remainder for our operations, including research and development and general and working capital purposes. None of the proceeds were used for construction of plant, building and facilities, the purchase of real estate or the acquisition of any business.

ITEM 6: SELECTED FINANCIAL DATA.

As a smaller reporting company we are not required to provide this information.

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ITEM 7: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the audited financial statements and related notes included elsewhere in this Annual Report on Form 10-K. In addition to historical information, this discussion and analysis here and throughout this Form 10-K contains forward-looking statements that involve risks, uncertainties and assumptions. Our actual results may differ materially from those anticipated in these forward-looking statements.

Overview

Ideal Power is located in Austin, Texas. We design, market and sell electrical power conversion products using our proprietary technology called Power Packet Switching Architecture, or PPSA. PPSA enables high efficiency power conversion by eliminating many of the heavy, passive components used in conventional power conversion products and replacing them with a unique software-enabled topology. Our products are designed to be used in both on-grid and off-grid applications. We believe our products are the only transformer-less power converters with electrical isolation certified for on-grid applications. Our technology is protected by a patent portfolio of 36 US and 6 foreign issued patents.

We sell our products primarily to systems integrators as part of a larger turn-key system which enable end users to manage their electricity consumption, by reducing demand charges or fossil fuel consumption, integrating renewable energy sources or and form their own microgrid. Our products are made by contract manufacturers to our specifications, enabling us to scale production to meet demand on a cost-effective basis without requiring significant expenditures on manufacturing facilities and equipment. Our existing products that connect to the power grid are certified for UL 1741 conformance. As our products gain broader acceptance in the power conversion market, we intend to license our proprietary PPSA-based product designs to OEMs within our target markets, as well as license our technologies for other markets which we do not plan to enter directly.

We were founded on May 17, 2007. To date, operations have been funded primarily through the sale of common stock and, prior to our initial public offering, the issuance of convertible debt. Total revenue generated from inception to date as of December 31, 2015 amounted to $10,337,105 with approximately a third of that revenue coming from government grants. We may continue to pursue research and development grants, if and when available, for the purpose of developing new products and improving current products.

Critical Accounting Policies

The following discussion and analysis of financial condition and results of operations is based upon our financial statements, which have been prepared in conformity with accounting principles generally accepted in the United States of America. Certain accounting policies and estimates are particularly important to the understanding of our financial position and results of operations and require the application of significant judgment by our management or can be materially affected by changes from period to period in economic factors or conditions that are outside of our control. As a result, they are subject to an inherent degree of uncertainty. In applying these policies, we use our judgment to determine the appropriate assumptions to be used in the determination of certain estimates. Those estimates are based on our historical operations, our future business plans and projected financial results, the terms of existing contracts, our observance of trends in the industry, information provided by our customers and information available from other outside sources, as appropriate. Please see Note 2 to our financial statements for a more complete description of our significant accounting policies.

Revenue Recognition.  Revenue from product sales is recognized when the risks of loss and title pass to the customer, as specified in (1) the respective sales agreements and (2) other revenue recognition criteria as prescribed by Staff Accounting Bulletin (“SAB”) No. 101, “Revenue Recognition in Financial Statements”, as amended by SAB No. 104, “Revenue Recognition”. We generally sell our products free-on-board shipping and recognize revenue when products are shipped.

In prior years, we received payments from government entities in the form of government grants with the most significant being a $2.5 million grant from ARPA-E awarded on January 30, 2012. Government grants are agreements that generally provide us with cost reimbursement for certain types of research and development activities over a contractually defined period. Revenues from government grants are recognized in the period during which we incur the related costs, provided that we have incurred the cost in accordance with the specifications and work plans determined between us and the government entity. Costs incurred related to grants are recorded as grant research and development costs. At December 31, 2014, we had recognized all grant revenues related to the ARPA-E grant and no grant revenue was recognized in the year ended December 31, 2015.

Research and Development.  Grant research and development are costs incurred solely related to grant revenues, and are classified as a line item under cost of revenues. Other research and development costs are presented as a line item under operating expenses and are expensed as incurred.

Intangible Assets.  Our intangible assets are primarily related to patents. We capitalize legal costs and filing fees, if any, associated with obtaining patents on our new inventions or other intangible assets. Once the asset have been issued or placed in service, we amortize these costs over the shorter of the legal life (generally a maximum of 20 years) or its estimated economic life using the straight-line method.

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Income Taxes.  We account for income taxes using an asset and liability approach that allows for the recognition and measurement of deferred tax assets based upon the likelihood of realization of tax benefits in future years. Under the asset and liability approach, deferred taxes are provided for the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. A valuation allowance is provided for deferred tax assets if it is more likely than not these items will either expire before we are able to realize their benefits, or that future deductibility is uncertain. Tax benefits from an uncertain tax position are recognized only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position.

Stock-Based Compensation.  We apply Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 718, “Stock Compensation,” when recording stock based compensation. The fair value of each stock option award is estimated on the date of grant using the commonly used Black-Scholes option valuation model. The assumptions used in the Black-Scholes model are as follows:

Grant Price — The grant price of the issuances are determined based on the closing share price on the date of grant.

Risk-free interest rate — The risk free interest rate is based on the implied yield available on US Treasury securities at the time of grant with an equivalent term of the expected life of the award.

Expected lives — As permitted by SAB 107, due to our insufficient history of option activity, we utilize the simplified approach to estimate the options’ expected term, calculated as the midpoint between the vesting period and the contractual life of the award.

Expected volatility — Volatility is estimated based on the historical volatilities of comparable companies.

Expected dividend yield — Dividend yield is based on current yield at the grant date or the average dividend yield over the historical period. We have never declared or paid dividends and have no plans to do so in the foreseeable future.

We use a Monte Carlo simulation pricing model to determine the fair value of performance stock units (“PSUs”). A typical Monte Carlo exercise simulates a distribution of stock prices to yield an expected distribution of stock prices during and at the end of the performance period. The simulations are repeated many times in order to derive a probabilistic assessment of stock performance. The stock-paths are simulated using assumptions which include expected stock price volatility and risk-free interest rate.

We account for stock issued to non-employees in accordance with the provisions of FASB ASC 505-50 “Equity Based Payments to Non-Employees.” FASB ASC 505-50 states that equity instruments that are issued in exchange for the receipt of goods or services should be measured at the fair value of the consideration received or the fair value of the equity instruments issued, whichever is more reliably measurable. The measurement date occurs as of the earlier of (a) the date at which a performance commitment is reached or (b) absent a performance commitment, the date at which the performance necessary to earn the equity instruments is complete (that is, the vesting date).

Results of Operations

Comparison of the year ended December 31, 2015 to the year ended December 31, 2014

Revenues.   Revenues for the year ended December 31, 2015 of $4,259,909 were $2,465,815, or 137%, higher than the $1,794,094 we earned in revenues for the year ended December 31, 2014. The increase in revenue was due to a $3,044,894 increase in product revenues partially offset by a $579,079 decrease in grant revenues as the ARPA-E grant was fully funded in December 2014.

In the year ended December 31, 2015, the increase in product revenues was driven by higher sales volumes due in part to the introduction of new products. In the year ended December 31, 2014, revenue from the sale of products was $1,215,015, related primarily to our 30kW battery converter.

Cost of Revenues.   Cost of revenues for the year ended December 31, 2015 of $3,872,672 was $1,683,580, or 77%, higher than the $2,189,092 cost of revenues for the year ended December 31, 2014 as the result of a significant increase in product cost of revenue on higher volumes partially offset by a $643,421 decrease in grant research and development costs.

In the year ended December 31, 2015, the increase in cost of revenues from the sale of products was primarily due to higher unit sales for our 30kW battery converter and our new products, the grid-resilient 30kW 2-port and multi-port PCS and a 125kW 2-port PCS as well as higher personnel costs of $175,110, as we added engineering and supply chain resources to support new and existing products.

The decrease in grant research and development costs was due to the timing of spending under the ARPA-E grant, as the ARPA-E grant funds were fully utilized by December 31, 2014. During the year ended December 31, 2014, we recognized $643,421 in grant research and development costs from our ARPA-E grant.

Gross Profit (Loss).   Gross profit for the year ended December 31, 2015 was $387,237 compared to a gross loss of $394,998 for the year ended December 31, 2014. Gross profit for the year ended December 31, 2015 was primarily due to higher product sales compared to the year ended December 31, 2014, and the gross profit improvement was partially offset by incremental costs associated with the initial roll-out of new products at low volumes.

Research and Development Expenses.   Research and development expenses increased by $3,181,163, or 136%, to $5,521,390 in the year ended December 31, 2015 from $2,340,227 in the year ended December 31, 2014. The increase was primarily due to the self-funded bi-directional power switch development costs of $1,707,620, and higher personnel costs of $715,033 as we added both firmware and hardware engineering resources. The increase is also attributable to higher development costs for new products, including our grid-resilient 30kW 2-port and multi-port PCS and 125kW 2 port and multi-port PCS, of $396,052 and higher product certification costs of $231,288 compared to the year ended December 31, 2014.

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General and Administrative Expenses.   General and administrative expenses increased by $700,319, or 23%, to $3,693,450 in the year ended December 31, 2015 from $2,993,131 in the year ended December 31, 2014. The increase was due primarily to higher stock compensation expense of $277,488, legal and patent fees of $160,653, and personnel costs of $137,605. In addition, we wrote off $45,641 of capitalized software costs in the year ended December 31, 2015.

Sales and Marketing Expenses.   Sales and marketing expenses increased by $444,934, or 37%, to $1,644,512 in the year ended December 31, 2015 from $1,199,578 in the year ended December 31, 2014. The increase was due primarily to severance costs of $139,530, higher contract labor costs of $116,720, bad debt expense of $48,445 (net of recovery of $24,124), placement costs of $44,427 and personnel costs of $43,344.

Loss from Operations.   Due to the increase in our operating expenses, our loss from operations for the year ended December 31, 2015 was $10,472,115 or 51% higher than the $6,927,934 loss from operations for year ended December 31, 2014.

Interest Income.  Interest income increased to $31,472 for the year ended December 31, 2015 compared to $27,715 for the year ended December 31, 2014. The increase is primarily due to a higher average cash balance for the year ended December 31, 2015 due to our follow-on offering in May 2015.

Net Loss.   As a result of the increase in our loss from operations, partly offset by the increase in gross profit, our net loss for the year ended December 31, 2015, was $10,440,643 as compared to a net loss of $6,900,219 for the year ended December 31, 2014, an increase of $3,540,424.

Liquidity and Capital Resources

We currently do not generate enough revenue to sustain our operations. Our revenues in the year ended December 31, 2015 are solely generated from sales of our products. We have primarily funded our operations through the sale of common stock and, prior to our initial public offering, the issuance of convertible debt.

As of December 31, 2015 and 2014, we had cash and cash equivalents of $15,022,286 and $7,912,011, respectively. Our net working capital increased to $14,260,603 as of December 31, 2015 from $7,658,720 as of December 31, 2014 due primarily to the net cash proceeds of $15,924,405 from our follow-on offering in May 2015.

Operating activities in the year ended December 31, 2015 resulted in cash outflows of $8,046,217, which were primarily due to the net loss for the period of $10,440,643, offset by stock-based compensation of $1,384,763, favorable balance sheet timing of $395,021, depreciation and amortization of $232,852 and the write-off of fixed assets and patents of $199,546. Operating activities in the year ended December 31, 2014 resulted in cash outflows of $5,469,550, which were primarily due to the net loss for the period of $6,900,219, offset by stock-based compensation of $944,102, stock compensation paid for services of $180,183, favorable balance sheet timing of $150,965 and other non-cash items of $155,419.

Investing activities in the years ended December 31, 2015 and 2014 resulted in cash outflows of $1,421,741 and $760,502, respectively. Cash outflows for the acquisition of fixed assets in the years ended December 31, 2015 and 2014 were $791,605 and $342,247, respectively, and cash outflows for the acquisition of intangible assets in the years ended December 31, 2015 and 2014 were $630,136 and $418,255, respectively. Cash outflows for the acquisition of fixed assets increased as we purchased equipment and improvements, including electrical upgrades, for our development lab to support current and future products and cash outflows for the acquisition of intangible assets increased as we expanded our intellectual property portfolio.

Financing activities in the year ended December 31, 2015 resulted in cash inflows of $16,578,233, related primarily to the issuance of 2,225,825 shares of common stock shares at a public offering price of $7.75. Net cash proceeds after offering-related expenses were $15,924,405. In addition, we received $653,828 in net proceeds from the exercise of options and warrants. In the year ended December 31, 2014, we received $4,966 in net proceeds from the exercise of stock options and warrants.

On December 1, 2014, we filed a Form S-3 shelf registration statement with the Securities and Exchange Commission. The registration statement allows us to offer up to an aggregate $75 million of common stock, preferred stock, warrants to purchase common stock or preferred stock or any combination thereof and provides us with the flexibility over three years to potentially raise additional equity in a public or private offering on commercial terms. After the May 2015 follow-on offering, $58 million is available to the Company under the registration statement.

Off-Balance Sheet Transactions

We do not have any off-balance sheet transactions.

Trends, Events and Uncertainties

Research and development of new technologies is, by its nature, unpredictable. Although we will undertake development efforts with commercially reasonable diligence, there can be no assurance that our working capital of $14,260,603 as of December 31, 2015 will be sufficient to enable us to develop our technology to the extent needed to create future sales to sustain operations as contemplated herein. If our working capital is insufficient for this purpose, we will consider other options to continue our path to commercialization, including, but not limited to, additional financing through follow-on stock offerings, debt financing, co-development agreements, curtailment of operations, suspension of operations, sale or licensing of developed intellectual property, or other alternatives.

We cannot assure you that our technology will be adopted, that we will ever earn revenues sufficient to support our operations, or that we will ever be profitable. Furthermore, since we have no committed source of financing, we cannot assure you that we will be able to raise money as and when we need it to continue our operations. If we cannot raise funds as and when we need them, we may be required to severely curtail, or even to cease, our operations.

Other than as discussed above and elsewhere in this report, we are not aware of any trends, events or uncertainties that are likely to have a material effect on our financial condition.

ITEM 7A: QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As a smaller reporting company we are not required to provide this information.

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ITEM 8: FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of Ideal Power Inc.

We have audited the accompanying balance sheets of Ideal Power Inc. (the “Company”) as of December 31, 2015 and 2014, and the related statements of operations, stockholders’ equity, and cash flows for each of the years in the two-year period ended December 31, 2015. The Company’s management is responsible for these financial statements. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2015 and 2014, and the results of its operations and its cash flows for each of the years in the two-year period ended December 31, 2015, in conformity with accounting principles generally accepted in the United States of America.

/s/ Gumbiner Savett Inc.

March 30, 2016

Santa Monica, California

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IDEAL POWER INC.

Balance Sheets

	December 31,
	2015			2014
ASSETS
Current assets:
Cash and cash equivalents	$	15,022,286		$	7,912,011
Accounts receivable, net		872,874			446,521
Inventories, net		648,009			251,338
Prepayments and other current assets		296,355			263,605
Total current assets		16,839,524			8,873,475
Property and equipment, net		925,899			374,376
Intangible assets, net		1,466,811			1,012,964
Other assets		17,920			17,920
Total assets	$	19,250,154		$	10,278,735
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	1,338,828		$	441,636
Accrued expenses		1,240,093			773,119
Total current liabilities		2,578,921			1,214,755
Commitments
Stockholders’ equity:
Common stock, $0.001 par value; 50,000,000 shares authorized; 9,549,544 and 7,048,235 shares issued and outstanding at December 31, 2015 and 2014, respectively		9,550			7,048
Additional paid-in capital		50,757,414			32,712,020
Treasury stock		(2,657	)		(2,657	)
Accumulated deficit		(34,093,074	)		(23,652,431	)
Total stockholders’ equity		16,671,233			9,063,980
Total liabilities and stockholders’ equity	$	19,250,154		$	10,278,735

The accompanying notes are an integral part of these financial statements.

 25

IDEAL POWER INC.

Statements of Operations

	For the Year Ended December 31,
	2015			2014
Revenues:
Products	$	4,259,909		$	1,215,015
Grants		—			579,079
Total revenue		4,259,909			1,794,094
Cost of revenues:
Products		3,872,672			1,545,671
Grant research and development costs		—			643,421
Total cost of revenue		3,872,672			2,189,092
Gross profit (loss)		387,237			(394,998	)
Operating expenses:
Research and development		5,521,390			2,340,227
General and administrative		3,693,450			2,993,131
Sales and marketing		1,644,512			1,199,578
Total operating expenses		10,859,352			6,532,936
Loss from operations		(10,472,115	)		(6,927,934	)
Interest income		31,472			27,715
Net loss	$	(10,440,643	)	$	(6,900,219	)
Net loss per share – basic and fully diluted	$	(1.23	)	$	(0.98	)
Weighted average number of shares outstanding – basic and fully diluted		8,495,735			7,016,872

The accompanying notes are an integral part of these financial statements.

 26

IDEAL POWER INC.

Statement of Stockholders’ Equity

For the Years Ended December 31, 2015 and 2014

	Common Stock				Common Stock Issuable						Additional Paid-In Capital			Treasury Stock			Accumulated Deficit			Total Stockholders’ Equity (Deficit)
	Shares		Amount		Shares			Amount
Balances at December 31, 2013		6,931,968	$	6,932		32,525		$	151,665		$	31,431,220		$	(2,657	)	$	(16,752,212	)	$	14,834,948
Common stock issued for services		38,903		39		(32,525	)		(151,665	)		201,630			—			—			50,004
Warrants issued for consulting services		—		—		—			—			130,179			—			—			130,179
Exercise of options and warrants		77,364		77		—			—			4,889			—			—			4,966
Stock-based compensation		—		—		—			—			944,102			—			—			944,102
Net loss for the year ended December 31, 2014		—		—		—			—			—			—			(6,900,219	)		(6,900,219	)
Balances at December 31, 2014		7,048,235	$	7,048		—		$	—		$	32,712,020		$	(2,657	)	$	(23,652,431	)	$	9,063,980
Shares issued in offering, net of issuance costs		2,225,825		2,226		—			—			15,922,179			—			—			15,924,405
Warrants issued for consulting services		—		—		—			—			84,900			—			—			84,900
Exercise of options and warrants		265,484		266		—			—			653,562			—			—			653,828
Issuance of restricted stock		10,000		10		—			—			(10	)		—			—			—
Stock-based compensation		—		—		—			—			1,384,763			—			—			1,384,763
Net loss for the year ended December 31, 2015		—		—		—			—			—			—			(10,440,643	)		(10,440,643	)
Balances at December 31, 2015		9,549,544	$	9,550		—		$	—		$	50,757,414		$	(2,657	)	$	(34,093,074	)	$	16,671,233

The accompanying notes are an integral part of these financial statements.

 27

IDEAL POWER INC.

Statements of Cash Flows

	For the Year Ended December 31,
	2015			2014
Cash flows from operating activities:
Net loss	$	(10,440,643	)	$	(6,900,219	)
Adjustments to reconcile net loss to net cash used in operating activities:
Allowance for doubtful accounts		97,344			24,775
Write-down of inventory		—			62,851
Depreciation and amortization		232,852			67,793
Write-off of fixed assets		53,855			—
Write-off of capitalized patents		145,691			—
Stock-based compensation		1,384,763			944,102
Fair value of warrants issued for services		84,900			130,179
Common stock issued for services		—			50,004
Decrease (increase) in operating assets:
Accounts receivable		(523,697	)		(218,890	)
Inventories		(412,698	)		205,468
Prepaid expenses and other assets		(32,750	)		(50,030	)
Increase (decrease) in operating liabilities:
Accounts payable		897,192			(97,509	)
Accrued expenses		466,974			311,926
Net cash used in operating activities		(8,046,217	)		(5,469,550	)
Cash flows from investing activities:
Purchase of property and equipment		(791,605	)		(342,247	)
Acquisition of intangible assets		(630,136	)		(418,255	)
Net cash used in investing activities		(1,421,741	)		(760,502	)
Cash flows from financing activities:
Net proceeds from issuance of common stock		15,924,405			—
Exercise of options and warrants		653,828			4,966
Net cash provided by financing activities		16,578,233			4,966
Net increase (decrease) in cash and cash equivalents		7,110,275			(6,225,086	)
Cash and cash equivalents at beginning of year		7,912,011			14,137,097
Cash and cash equivalents at end of year	$	15,022,286		$	7,912,011

The accompanying notes are an integral part of these financial statements.

 28

Ideal Power Inc.

Notes to Financial Statements

Note 1 — Organization and Description of Business

Ideal Power Inc. (the “Company”) was incorporated in Texas on May 17, 2007 under the name Ideal Power Converters, Inc. The Company changed its name to Ideal Power Inc. on July 8, 2013 and re-incorporated in Delaware on July 15, 2013. With headquarters in Austin, Texas, it develops power conversion solutions with an initial focus on stand-alone commercial and industrial grid storage, combined solar and storage, and microgrid applications. The principal products of the Company are power conversion systems, including 2-port and multi-port products.

Since its inception, the Company has generated limited revenues from the sale of products and has financed its research and development efforts and operations primarily through the sale of common stock and, prior to its initial public offering, the issuance of convertible debt.

Note 2 — Summary of Significant Accounting Policies

Basis of Presentation

The preparation of financial statements in conformity with US GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Accounts Receivable

Trade accounts receivable are stated net of an allowance for doubtful accounts. The Company performs ongoing credit evaluations of its customers’ financial condition. In limited instances, the Company may require an upfront deposit and, in most cases, the Company does charge interest on past due amounts. Management estimates the allowance for doubtful accounts based on review and analysis of specific customer balances that may not be collectible, customer payment history and any other customer-specific information that may impact the evaluation of the specific customer’s credit. Accounts are considered for write-off when they become past due and when it is determined that the probability of collection is remote. The allowance for doubtful accounts was $15,145 and $24,775 at December 31, 2015 and 2014, respectively.

Inventories

Inventories are stated at the lower of cost (first in, first out method) or market value. Inventory quantities on hand are reviewed regularly and a write-down for excess and obsolete inventory is recorded based primarily on an estimated forecast of product demand, market conditions and anticipated production requirements in the near future. There was a $4,274 and $40,703 reserve for excess and obsolete inventory at December 31, 2015 and 2014, respectively, related to component parts not anticipated to have a future use.

Property and Equipment

Property and equipment are stated at historical cost less accumulated depreciation and amortization. Major additions and improvements are capitalized while maintenance and repairs that do not improve or extend the useful life of the respective asset are expensed. Depreciation and amortization of property and equipment is computed using the straight-line method over their estimated useful lives. Leasehold improvements are amortized over the shorter of the life of the asset or the related leases. Estimated useful lives of the principal classes of assets are as follows:

Leasehold improvements	Shorter of lease term or useful life
Machinery and equipment	5 years
Furniture, fixtures and computers	3 – 5 years

Intangible Assets

The Company’s intangible assets are primarily composed of patents, which are recorded at cost. The Company capitalizes third party legal costs and filing fees, if any, associated with obtaining patents or other intangible assets. Once the intangible asset has been placed in service, the Company amortizes these costs over the shorter of the asset’s legal life, generally 20 years, or its estimated economic life using the straight-line method.

Impairment of Long-Lived Assets

The long-lived assets held and used by the Company are reviewed for impairment no less frequently than annually or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In the event that facts and circumstances indicate that the cost of any long-lived assets may be impaired, an evaluation of recoverability is performed. Management has determined that there was an impairment in the value of long-lived assets in the amount of $199,546 during the year ended December 31, 2015. There were no impairments in the value of long-lived assets in the year ended December 31, 2014.

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Fair Value of Financial Instruments

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Assets and liabilities measured at fair value are categorized based on whether or not the inputs are observable in the market and the degree that the inputs are observable. The categorization of financial assets and liabilities within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

The Company’s financial instruments primarily consist of cash and cash equivalents, accounts receivable and accounts payable. As of the balance sheet dates, the estimated fair values of the financial instruments were not materially different from their carrying values as presented on the balance sheets. This is primarily attributed to the short-term maturities of these instruments. The Company did not identify any other non-recurring assets and liabilities that are required to be presented in the balance sheets at fair value.

Revenue Recognition

Revenue from product sales is recognized when the risks of loss and title pass to the customer, as specified in (1) the respective sales agreements and (2) other revenue recognition criteria as prescribed by Staff Accounting Bulletin (“SAB”) No. 101 (SAB 101), “Revenue Recognition in Financial Statements,” as amended by SAB No. 104, “Revenue Recognition”. The Company generally sells its products FOB shipping and recognizes revenue when products are shipped.

In prior years, the Company received payments from government entities in the form of government grants. Government grants are agreements that generally provide the Company with cost reimbursement for certain types of research and development activities over a contractually defined period. Revenues from government grants are recognized in the period during which the Company incurs the related costs, provided that the Company has incurred the cost in accordance with the specifications and work plans determined between the Company and the government entity. Costs incurred related to the grants are recorded as grant research and development costs. At December 31, 2014, the Company had recognized all grant revenues related to the ARPA-E grant and no grant revenue was recognized in the year ended December 31, 2015. Grant receivables were $132,227 at December 31, 2014 and were included in accounts receivable.

Product Warranties

The Company generally provides a ten year limited warranty on its products. Accruals for product warranties are estimated based upon limited historical warranty experience, engineering experience and judgment, and third party assessments of the reliability of the Company’s 30kW products. Accruals for product warranties are recorded in cost of revenues at the time revenue is recognized in order to match revenues with related expenses. The Company assesses the adequacy of its estimated warranty liability quarterly and adjusts the reserve, included in accrued expenses, as necessary. Although any such adjustments were not material in the years ended December 31, 2015 and 2014, any such adjustments could be material in the future if estimates differ significantly from actual warranty experience.

Research and Development

Grant research and development are costs incurred solely related to grant revenues, and are classified as a line item under cost of revenues.

Other research and development costs are presented as a line item under operating expenses and are expensed as incurred. Total research and development costs incurred during the years ended December 31, 2015 and 2014 amounted to $5,521,390 and $2,983,648, respectively, of which $643,421 was included in cost of revenues in the year ended December 31, 2014.

Income Taxes

The Company accounts for income taxes using an asset and liability approach which allows for the recognition and measurement of deferred tax assets based upon the likelihood of realization of tax benefits in future years. Under the asset and liability approach, deferred taxes are provided for the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. A valuation allowance is provided for deferred tax assets if it is more likely than not these items will either expire before the Company is able to realize their benefits, or that future deductibility is uncertain. At December 31, 2015 and 2014, the Company has established a full reserve against all deferred tax assets.

Tax benefits from an uncertain tax position are recognized only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate resolution.

Net Loss Per Share

The Company applies Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 260, “Earnings per Share.” Basic earnings (loss) per share is computed by dividing earnings (loss) available to common stockholders by the weighted-average number of common shares outstanding. Diluted earnings (loss) per share is computed similar to basic earnings (loss) per share except that the denominator is increased to include additional common shares available upon exercise of stock options and warrants using the treasury stock method. In periods with a net loss, no common share equivalents are included because their effect would be anti-dilutive. At December 31, 2015 and 2014, potentially dilutive shares outstanding amounted to 2,846,325 and 2,932,155, respectively.

Stock Based Compensation

The Company applies FASB ASC 718, “Stock Compensation,” when recording stock based compensation. The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option valuation model.

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The Company uses a Monte Carlo simulation pricing model to determine the fair value of performance stock units (“PSUs”). A typical Monte Carlo exercise simulates a distribution of stock prices to yield an expected distribution of stock prices during and at the end of the performance period. The simulations are repeated many times in order to derive a probabilistic assessment of stock performance. The stock-paths are simulated using assumptions which include expected stock price volatility and risk-free interest rate.

The Company accounts for stock issued to non-employees in accordance with the provisions of FASB ASC 505-50 “Equity Based Payments to Non-Employees.” FASB ASC 505-50 states that equity instruments that are issued in exchange for the receipt of goods or services should be measured at the fair value of the consideration received or the fair value of the equity instruments issued, whichever is more reliably measurable. The measurement date occurs as of the earlier of (a) the date at which a performance commitment is reached or (b) absent a performance commitment, the date at which the performance necessary to earn the equity instruments is complete (that is, the vesting date).

The Company issues common stock upon exercise of equity awards and warrants.

Presentation of Sales Taxes

Certain states impose a sales tax on the Company’s sales to nonexempt customers. The Company collects that sales tax from customers and remits the entire amount to the states. The Company’s accounting policy is to exclude the tax collected and remitted to the states from revenues and cost of revenues.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains its cash with a major financial institution located in the United States. Balances are insured by the Federal Deposit Insurance Corporation up to $250,000. The Company maintains balances in excess of federally insured limits. The Company has not experienced losses in such accounts and believes it is not exposed to significant credit risk regarding its cash and cash equivalents.

The Company encounters a certain amount of risk as a result of a concentration of revenue from a few significant customers. Credit is extended to customers based on an evaluation of their financial condition. In limited instances, the Company may require an upfront deposit and, in most cases, the Company does charge interest on past due amounts. The Company performs ongoing credit evaluations of its customers and records an allowance for potential bad debts based on available information.

The Company had revenue from four customers that accounted for 66% of net revenue for the year ended December 31, 2015, and from a government entity and three customers that accounted for 76% of net revenue for the year ended December 31, 2014. The Company had an accounts receivable balance from three customers that accounted for 66% of trade receivables at December 31, 2015, and three customers that accounted for 92% of trade receivables at December 31, 2014.

Reclassifications

Certain items in prior financial statements have been reclassified to conform to current year presentation. These changes did not impact total revenue, loss from operations or net loss.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers. ASU 2014-09 will require that companies recognize revenue based on the value of transferred goods or services as they occur in the contract. ASU 2014-09 also will require additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. Based on the FASB’s Exposure Draft Update approved in July 2015, Revenue from Contracts With Customers (Topic 606): Deferral of the Effective Date, ASU 2014-09 is now effective for reporting periods beginning after December 15, 2017, with early adoption permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Entities will be able to transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The adoption of ASU 2014-09 is not expected to have any impact on the Company’s financial statement presentation or disclosures.

In August 2014, the FASB issued Accounting Standards Update No. 2014-15 (ASU 2014-15), Presentation of Financial Statements – Going Concern (Subtopic 205-10). ASU 2014-15 provides guidance as to management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of ASU 2014-15 is not expected to have any impact on the Company’s financial statement presentation or disclosures.

In November 2015, the FASB issued Accounting Standards Update No. 2015-17 (ASU 2015-17), Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes. ASU 2015-17 require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. ASU 2015-17 is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The adoption of ASU 2015-17 is not expected to have an impact the Company’s financial statement presentation or disclosures.

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Management does not believe that any other recently issued, but not yet effective, accounting standards, if adopted, will have a material effect on the financial statements.

Note 3 — Accounts Receivable

Accounts receivable, net consisted of the following:

	December 31,
	2015			2014
Trade receivables	$	803,599		$	231,412
Grant receivables		—			132,227
Other receivables		84,420			107,657
		888,019			471,296
Allowance for doubtful accounts		(15,145	)		(24,775	)
	$	872,874		$	446,521

Note 4 — Inventories

Inventories, net consisted of the following:

	December 31,
	2015			2014
Raw materials	$	124,498		$	143,289
Finished goods		527,785			148,752
		652,283			292,041
Reserve for obsolescence		(4,274	)		(40,703	)
	$	648,009		$	251,338

Note 5 — Prepayments and Other Current Assets

Prepayments and other current assets consisted of the following:

	December 31,
	2015		2014
Prepaid insurance	$	168,481	$	158,400
Prepaid software		59,874		4,557
Other		68,000		100,648
	$	296,355	$	263,605

Note 6 — Property and Equipment

Property and equipment, net consisted of the following:

	December 31,
	2015			2014
Machinery and equipment	$	676,881		$	263,142
Building leasehold improvements		362,300			48,280
Furniture, fixtures, software and computers		195,497			183,237
		1,234,678			494,659
Accumulated depreciation and amortization		(308,779	)		(120,283	)
	$	925,899		$	374,376

Note 7 — Intangible Assets

Intangible assets, net consisted of the following:

	December 31,
	2015			2014
Patents	$	1,313,269		$	1,040,219
Other intangible assets		211,394			—
		1,524,663			1,040,219
Accumulated amortization		(57,852	)		(27,255	)
	$	1,466,811		$	1,012,964

 32

Amortization expense amounted to $30,597 and $14,204 for the years ended December 31, 2015 and 2014, respectively. Amortization expense for the succeeding five years and thereafter is $47,277 (2016); $47,277 (2017); $47,277 (2018); $47,277 (2019); $47,277 (2020); and $618,520 (thereafter).

At December 31, 2015 and 2014, the Company had capitalized approximately $612,000 and $746,000, respectively, for costs related to patents that have not been awarded. 

On July 24, 2015 and December 21, 2015, the Company entered into licensing agreements which expire on February 7, 2033. The agreements provide the Company an exclusive royalty-free license associated with semiconductor power switches which enhances its intellectual property portfolio. The Company recorded legal and acquisition costs of $211,394 associated with the licensing agreements as intangible assets and will amortize the cost over the 17-year term of the agreements.

Note 8 — Accrued Expenses

Accrued expenses consisted of the following:

	December 31,
	2015		2014
Accrued compensation	$	616,029	$	548,953
Warranty reserve		358,296		143,364
Other		265,768		80,802
	$	1,240,093	$	773,119

The changes in warranty reserve were as follows:

	2015			2014
Balance, beginning of the year	$	143,364		$	113,078
Provisions for warranty and beta replacements		235,377			76,671
Warranty payments or beta replacements		(20,445	)		(46,385	)
Balance, end of the year	$	358,296		$	143,364

Note 9 — Common Stock

All shares of common stock have a par value of $0.001. Each holder of common stock is entitled to one vote per share outstanding.

During the year ended December 31, 2015, the Company completed an underwritten follow-on offering of 2,225,825 shares, inclusive of the underwriter’s overallotment of 290,325 shares, of its common stock. Gross proceeds were $17,250,144 before underwriting discounts and offering expenses. Net cash proceeds were $15,924,405 after offering fees and expenses of $1,325,739, including the underwriting discount of $1,035,008 and other costs of $290,731. In addition, common stock activity included the exercise of options and warrants for an aggregate 265,484 shares of the Company’s common stock for net proceeds of $653,828. The Company also granted 10,000 restricted shares of common stock to an employee as a performance award.

During the year ended December 31, 2014, common stock activity consisted of the exercise of options and warrants for an aggregate 77,364 shares of the Company’s common stock for proceeds of $4,966 and the issuance of an aggregate 38,903 shares of the Company’s common stock with a fair value of $201,669 for services, of which 32,525 shares of the Company’s common stock with a fair value of $151,665 were issuable at December 31, 2013.

On December 1, 2014, the Company filed a Form S-3 shelf registration statement with the Securities and Exchange Commission. The registration statement allows the Company to offer up to an aggregate $75 million of common stock, preferred stock, warrants to purchase common stock or preferred stock or any combination thereof. After the May 2015 follow-on offering, $58 million is available to the Company under the registration statement.

Note 10 — Stock Option Plan

On May 17, 2013, the Company adopted the 2013 Equity Incentive Plan (the “Plan”) and reserved shares of common stock for issuance under the Plan not to exceed a maximum of 839,983 shares. The Plan is administered by the Compensation Committee of the Company’s Board of Directors. The persons eligible to participate in the Plan are employees (including officers), members of the Board of Directors, consultants and other independent advisors and contractors who provide services to the Company. Options issued under the Plan may have a term of up to ten years and may have variable vesting. The typical vesting schedule for stock options awarded under the Plan is a four year annual vesting schedule for employees and a one year quarterly vesting schedule for Board members.

On May 26, 2015, the stockholders approved an amendment to the Plan which increased shares available for issuance under the Plan by 1,250,000 shares. Also, on August 27, 2015, the Compensation Committee approved a restatement of the Plan in order to clarify the types of awards allowable under the plan to include restricted stock and PSUs. At December 31, 2015, there were 831,615 shares of common stock available for issuance under the Plan.

 33

During the year ended December 31, 2015, the Company granted 182,600 and 38,502 stock options to purchase shares of common stock to employees and non-employee directors, respectively. The exercise price of the stock options issued to both employees and directors was the closing price of the Company’s stock on the date of grant. The options granted to employees vest in equal annual installments over 4 years while the options granted to directors vested in equal quarterly installments in 2015. The options granted in 2015 were valued at $974,329 using the Black-Scholes option pricing model. The compensation expense associated with these grants recognized during the year ended December 31, 2015 amounted to $231,395.

During the year ended December 31, 2015, the Company granted an employee 10,000 shares of restricted stock. The fair value of the restricted stock was $77,700 based on the closing market price of the Company’s stock on the date of grant, which will be recognized ratably over the four-year vesting period. Stock compensation expense of $7,284 related to this grant was recognized during the year ended December 31, 2015. Shares outstanding at December 31, 2015 include the 10,000 shares of unvested restricted stock.

During the year ended December 31, 2015, the Company also granted an employee 96,000 PSUs, which are subject to the satisfaction of certain market-based and continued service conditions. The market-based vesting criteria are separated into four tranches and require that the Company achieve certain stock price targets ranging from $9 per share to $15 per share during the four-year period following the grant date. With certain limited exceptions, continued employment with the Company on the fourth anniversary of the grant date is required in order for the PSUs to vest. The grant-date fair value of the PSUs was $405,997, or $4.23 per unit, using a Monte Carlo Simulation with a four-year life, 60% volatility and a risk free interest rate of 1.3%. The fair value of the PSUs is being recognized over the vesting period and $31,014 was recognized during the year ended December 31, 2015.

As permitted by SAB 107, management utilizes the simplified approach to estimate the expected term of stock options, which represents the period of time that options granted are expected to be outstanding. The risk free interest rate for periods within the contractual life of the option is based on the U.S. treasury yield in effect at the time of grant. The volatility is estimated based on the historical volatilities of comparable companies. The Company has never declared or paid dividends and has no plans to do so in the foreseeable future.

The assumptions used in the Black-Scholes model are as follows:

	For the year ended December 31,
	2015			2014
Risk-free interest rate		1.54% to 1.95	%		1.78 to 2.19	%
Expected dividend yield		0	%		0	%
Expected life		5.31 to 6.25 years			5.31 to 6.25 years
Expected volatility		60	%		60	%

A summary of the Company’s stock option activity and related information is as follows:

	2015							2014
	Stock Options			Weighted Average Exercise Price		Weighted Average Remaining Life (in years)		Stock Options			Weighted Average Exercise Price		Weighted Average Remaining Life (in years)
Outstanding at January 1		1,368,047		$	6.41		8.7		485,573		$	4.24		8.2
Granted		221,102		$	7.80				899,526		$	7.49
Exercised		(201,389	)	$	4.47				(10,500	)	$	0.10
Forfeited/Expired/Exchanged		(55,437	)	$	6.13				(6,552	)	$	4.53
Outstanding at December 31		1,332,323		$	6.94		8.4		1,368,047		$	6.41		8.7
Exercisable at December 31		572,623		$	6.02		7.8		467,204		$	4.65		7.3

During the year ended December 31, 2015, option holders exercised 90,609 options on a cashless basis and received 49,987 shares of common stock and 40,622 shares were used to cover the exercise price. In addition, option holders exercised 110,780 options and paid the exercise price in cash. The Company received $553,871 in net cash proceeds for the exercise of options during 2015.

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The following table sets forth additional information about stock options outstanding at December 31, 2015:

Range of Exercise Prices	Options Outstanding		Weighted Average Remaining Life (in years)		Weighted Average Exercise Price		Options Exercisable
$0.41 – $5.00		226,645		6.8	$	4.05		208,395
$5.01 – $7.50		477,928		8.5	$	7.00		228,203
$7.51 – $11.00		627,750		8.8	$	7.95		136,025
		1,332,323						572,623

The estimated aggregate pretax intrinsic value (the difference between the Company’s stock price on the last day of the year ended December 31, 2015 and the exercises price, multiplied by the number of vested in-the-money options) is approximately $1,136,000. This amount changes based on the fair value of the Company’s stock.

As of December 31, 2015, there was $3,082,439 of unrecognized compensation cost related to non-vested share-based compensation arrangements. That cost is expected to be recognized over a weighted average period of 2.8 years.

Note 11 — Warrants

During the year ended December 31, 2015, warrant holders exercised 127,340 warrants on a cashless basis and received 75,951 shares of common stock and 51,389 shares were used to cover the exercise price. In addition, warrant holders exercised 28,766 warrants and paid the exercise price in cash. The Company received $99,957 in net cash proceeds for the exercise of warrants during 2015.

During the year ended December 31, 2014, warrant holders exercised 94,376 warrants on a cashless basis and received 65,552 shares of common stock and 28,824 shares were used to cover the exercise price. In addition, a warrant holder exercised 1,438 warrants and paid the exercise price in cash. The Company received $4,972 in net cash proceeds for the exercise of warrants during 2014.

In 2013, the Company issued a warrant for the purchase of 84,000 shares of the Company’s common stock for consulting services, with an exercise price of $6.25. The warrant shares vest in increments of 4,000 warrant shares at the end of each month beginning with November 2013 and ending with October 2014 with the remainder vesting in increments of 3,000 warrant shares at the end of each month beginning with November 2014 and ending with October 2015. The warrant was valued at $237,719 using the Black-Scholes option pricing model. For the years ended December 31, 2015 and 2014, the Company recorded $84,900 and $130,179, respectively, in expense related to vested warrant shares.

The shares underlying the warrants have not been registered.

A summary of the Company’s warrant activity and related information is as follows:

	2015					2014
	Warrants			Weighted Average Exercise Price		Warrants			Weighted Average Exercise Price
Outstanding at January 1		1,564,108		$	4.48		1,659,922		$	4.36
Granted		—			—		—			—
Exercised		(156,106	)	$	3.72		(95,814	)	$	2.27
Forfeited/Expired		—			—		—			—
Outstanding at December 31		1,408,002		$	4.57		1,564,108		$	4.48

No warrants were unvested at December 31, 2015.

Note 12 — Income Taxes

Income taxes are disproportionate to income due to net operating loss carryforwards, which are fully reserved. As of December 31, 2015, the Company has federal net operating loss carryforwards of approximately $23 million which will begin to expire in 2031. Management has concluded that it is more likely than not that the Company will not have sufficient foreseeable taxable income within the carryforward period permitted by current law to allow for the utilization of certain of the deductible amounts generating the deferred tax assets; therefore, a full valuation allowance has been established to reduce the net deferred tax assets to zero at December 31, 2015 and 2014.

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The following is a summary of the significant components of the Company’s net deferred income tax assets and liabilities as of December 31, 2015 and 2014:

	Year ended December 31,
	2015			2014
Current deferred income tax assets:
Inventory – uniform capitalization	$	75,000		$	13,000
Accrued compensation and other		199,000			151,000
Less: valuation allowance		(274,000	)		(164,000	)
	$	—		$	—
Non-current deferred income tax assets and (liabilities):
Net operating loss	$	8,029,000		$	4,886,000
Research and development credit		18,000			18,000
Warranty reserve		122,000			49,000
Warrants issued for services		73,000			44,000
Depreciation and amortization		(12,000	)		(54,000	)
Exercise of options and warrants		(46,000	)		—
Stock based compensation		511,000			191,000
Intangibles		(548,000	)		(330,000	)
Less: valuation allowance		(8,147,000	)		(4,804,000	)
Net non-current deferred tax assets	$	—		$	—

The Company has applied the provisions of FASB ASC 740, “Income Tax” which clarifies the accounting for uncertainty in tax positions. FASB ASC 740 requires the recognition of the impact of a tax position in the financial statements if that position is more likely than not of being sustained on a tax return upon examination by the relevant taxing authority, based on the technical merits of the position. At December 31, 2015 and 2014, the Company had no unrecognized tax benefits.

The Company recognizes interest and penalties related to income tax matters in interest expense and operating expenses, respectively. As of December 31, 2015 and 2014, the Company has no accrued interest and penalties related to uncertain tax positions.

The Company is subject to tax in the United States (“U.S.”) and files tax returns in the U.S. federal and state jurisdictions. The Company is no longer subject to U.S. federal, state and local income tax examinations by tax authorities for years before 2011. The Company currently is not under examination by any tax authority.

The reconciliation between the statutory income tax rate and the effective tax rate is as follows:

	For the year ended December 31,
	2015			2014
Statutory federal income tax rate		(34	)%		(34	)%
Stock based compensation		(1	)		—
Other		2			5
Valuation allowance		33			29
		—	%		—	%

Note 13 — Commitments and Contingencies

Lease

The Company has entered into a lease for 14,782 square feet of office and laboratory space located in Austin, Texas. The triple net lease has a term of 48 months and commenced on June 1, 2014. The annual base rent in the first year of the lease was $154,324 and increases by $3,548 in each succeeding year of the lease. In addition, the Company is required to pay its proportionate share of operating costs for the building. The Company has a one-time option to terminate the lease on May 31, 2017 with a termination payment of approximately $99,000 if it elects to exercise this option.

At December 31, 2015, the remaining annual base rent commitments under the lease, assuming no early termination, are as follows:

For the year ended December 31,	Amount
2016	$	159,941
2017		163,489
2018		68,736
Total	$	392,166

Rent expense incurred for the years ended December 31, 2015 and 2014 amounted to $212,397 and $137,559, respectively.

License Agreement

On July 24, 2015 and December 21, 2015, the Company entered into licensing agreements which expire on February 7, 2033. Per the agreements, the Company has the exclusive royalty-free license which enhances its intellectual property portfolio related to semiconductor power switches. The agreements include both fixed and variable payments. The Company capitalized the $211,394 of fixed payments as an intangible asset and will amortize the asset over the life of the licensing agreements. The variable payments are a function of the number of associated patent filings pending and patents issued under the agreements. The Company will pay $10,000 for each patent filing pending and $20,000 for each patent issued within 20 days of December 21, 2017 and each subsequent year of the agreement, up to a maximum of $100,000 per year (i.e. five issued patents). At December 31, 2015, no patents associated with the agreements had been issued.

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Note 14 — Retirement Plan

The Company has a defined contribution retirement plan covering all of its employees. Under the plan, the Company contributions are discretionary. No discretionary contributions were made by the Company in the years ended December 31, 2015 and 2014.

Note 15 — Subsequent Events

The Company has been notified by legal counsel that a patent was issued on March 2, 2016 under the licensing agreement discussed within Footnote 7 – Intangible Assets and Footnote 13 – Commitment and Contingencies. As per the agreement, if the counterparty does not breach the agreement, the Company will be required to make a payment within 20 days of December 21, 2017 and each subsequent year, through the term of the agreement, in the amount of $20,000.

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ITEM 9: CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

Not applicable.

ITEM 9A: CONTROLS AND PROCEDURES

Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by an issuer in the reports that it files or submits under the Securities Exchange Act of 1934, as amended (the “Act”) is accumulated and communicated to the issuer’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

We carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer (“CEO”), our principal executive officer, and our Chief Financial Officer (“CFO”), our principal financial and accounting officer, of the effectiveness of the design and operation of our disclosure controls and procedures as of the end of the period covered by this report. The evaluation was undertaken in consultation with our accounting personnel. Based on that evaluation, our CEO and our CFO concluded that our disclosure controls and procedures are effective to ensure that information required to be disclosed by us in the reports that we file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act. Internal control over financial reporting is a process designed by, or under the supervision of, our CEO and CFO and effected by our board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Our management, under the supervision and with the participation of our CEO and CFO, conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations (COSO). Based on such evaluation, management concluded that our internal control over financial reporting was effective as of December 31, 2015.

This Annual Report does not include an attestation report of our independent registered public accounting firm regarding internal control over financial reporting. Management’s report was not subject to attestation requirements by our independent registered public accounting firm pursuant to rules of the Securities and Exchange Commission that permit us to provide only management’s report in this Annual Report.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rule 13a-15(d) or 15d-15(d) of the Act during the period covered by this Annual Report on Form 10-K that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Inherent Limitations on Effectiveness of Controls

Our management, including our CEO and CFO, do not expect that our disclosure controls or our internal control over financial reporting will prevent or detect all error and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. The design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Further, because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of simple error or mistake. Controls can also be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the controls. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Projections of any evaluation of controls effectiveness to future periods are subject to risks. Over time, controls may become inadequate because of changes in conditions or deterioration in the degree of compliance with policies or procedures.

ITEM 9B: OTHER INFORMATION

Not applicable.

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PART III

ITEM 10: DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The following table sets forth the names and ages of all of our directors and executive officers. Our officers are appointed by, and serve at the pleasure of, the board of directors.

Name	Age	Position
R. Daniel Brdar	56	Chief Executive Officer, President and Chairman of the Board
Timothy W. Burns, CPA	41	Chief Financial Officer, Secretary and Treasurer
William C. Alexander	60	Chief Technology Officer and Director
Ryan O’Keefe	48	Senior Vice President, Business Development
Mark L. Baum, J.D.	43	Director
Lon E. Bell, Ph.D.	75	Director
David B. Eisenhaure	70	Director

The remaining information required by this item is incorporated herein by reference from our Definitive Proxy Statement, involving the election of directors, to be filed pursuant to Regulation 14A with the SEC not later than 120 days after the end of the fiscal year covered by this Form 10-K (or Definitive Proxy Statement).

ITEM 11: EXECUTIVE COMPENSATION

The information required by this item is incorporated by reference from our Definitive Proxy Statement.

ITEM 12: SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED SHAREHOLDER MATTERS

Securities Authorized for Issuance under Equity Compensation Plans

The table below provides information, as of December 31, 2015, regarding our 2013 Equity Incentive Plan (the “Plan”) under which our equity securities are authorized for issuance to officers, directors, employees, consultants, independent contractors and advisors.

Plan category	Number of securities to be issued upon exercise of outstanding options, warrants and rights (a)			Weighted-average exercise price of outstanding options, warrants and rights (b)		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a)) (c)
Equity compensation plans approved by security holders		1,428,323	(1)	$	6.94		831,615	(2)

(1) This amount includes performance stock units (“PSU”) granted to employees.

(2) This amount will not be subject to future increases, absent shareholder approval of an increase in the securities authorized for issuance under the Plan.

The rest of the information required by this item is incorporated by reference from our Definitive Proxy Statement.

ITEM 13: CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this item is incorporated by reference from our Definitive Proxy Statement.

ITEM 14: PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this item is incorporated by reference from our Definitive Proxy Statement.

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

Exhibits

The exhibits filed as part of this Annual Report on Form 10-K are listed in the Exhibit Index immediately preceding the exhibits. We have identified in the Exhibit Index each management contract and compensation plan filed as an exhibit to this Annual Report on Form 10-K in response to Item 15(a) (3) of Form 10-K.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Austin, State of Texas, on this 30^th day of March, 2016.

IDEAL POWER INC.
By:	/s/ R. Daniel Brdar
	R. Daniel Brdar,
	Chief Executive Officer
By:	/s/ Timothy Burns
	Timothy Burns,
	Chief Financial Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

Dated: March 30, 2016

	/s/ R. Daniel Brdar
	R. Daniel Brdar,
	Chief Executive Officer
	(principal executive officer) and Chairman
Dated: March 30, 2016
	/s/ Timothy Burns
	Timothy Burns,
	Chief Financial Officer
	(principal financial and accounting officer),
	Secretary and Treasurer
Dated: March 30, 2016
	/s/ William C. Alexander
	William C. Alexander,
	Chief Technology Officer and director
Dated: March 30, 2016
	/s/ Lon E. Bell
	Lon E. Bell, Ph.D., director
Dated: March 30, 2016
	/s/ Mark Baum
	Mark Baum, director
Dated: March 30, 2016
	/s/ David B. Eisenhaure
	David B. Eisenhaure, director

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EXHIBIT INDEX

Exhibit No.	Description of Document
3.1	Delaware Certificate of Conversion including Certificate of Incorporation (1)
3.2	Bylaws of Ideal Power Inc. (1)
4.1	Underwriter’s Warrant (1)
10.1	Form of Lock-Up Agreement (1)
10.2	Form of Warrant issued by the registrant to investors in the offering completed on July 17, 2012 (1)
10.3	Form of Warrant issued by the registrant to investors in the offering completed on August 31, 2012 (1)
10.4	Form of Replacement Warrant issued by the registrant to investors in the offering completed on August 31, 2012 (1)
10.5	Form of Warrant issued by the registrant to investors in the offering completed on November 21, 2012 (1)
10.6	Warrant issued to MDB Capital Group, LLC (MDB-1) dated November 21, 2012 (1)
10.7	Warrant issued to MDB Capital Group, LLC (MDB-2) dated November 21, 2012 (1)
10.8	Form of Warrant issued by the registrant to investors in the offering completed on July 29, 2013 (1)
10.9	Ideal Power Inc. 2013 Amended and Restated Equity Incentive Plan (6)
10.10	Addendum to Warrant issued to MDB Capital Group, LLC (MDB-1) dated July 10, 2013 (1)
10.11	Addendum to Warrant issued to MDB Capital Group, LLC (MDB-2) dated July 10, 2013 (1)
10.12	Form of Addendum to Stock Purchase Warrant (Series A) (1)
10.13	Form of Addendum to Stock Purchase Warrant (Series B) (1)
10.14	Employment Agreement between the registrant and R. Daniel Brdar (2) +
10.14.1	Amendment No. 1 to Employment Agreement between the registrant and R. Daniel Brdar dated September 16, 2014(4) +
10.15	Non-Qualified Stock Option Award Agreement issued to R. Daniel Brdar (2)  +
10.16	Lease Agreement between the Company and Agellan Commercial REIT U.S. L.P. dated March 24, 2014 (3)
10.17	Employment Agreement between the Company and William Alexander dated September 16, 2014 (4) +
10.18	Employment Agreement between the registrant and Timothy W. Burns dated September 16, 2014 (4) +
10.19*	Employment Agreement between the registrant and Ryan O’Keefe dated August 11, 2014

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Exhibit No.	Description of Document
31.1	Certification of Principal Executive Officer, pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities and Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002*
31.2	Certification of Principal Financial and Accounting Officer pursuant to Rule 13a-14(a) or 15d-14(a) of the Securities and Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002*
32.1	Certification of Principal Executive Officer and Principal Financial and Accounting Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002*
101.INS	XBRL Instance Document*
101.SCH	XBRL Taxonomy Extension Schema*
101.CAL	XBRL Taxonomy Extension Calculation Linkbase*
101.DEF	XBRL Taxonomy Extension Definition Linkbase*
101.LAB	XBRL Taxonomy Extension Label Linkbase*
101.PRE	XBRL Taxonomy Extension Presentation Linkbase*

* Included herein.

+ Indicates a contract with management.

(1) Incorporated by reference to the registrant’s registration statement on Form S-1, file no. 333-190414, originally filed with the Securities and Exchange Commission on August 6, 2013, as amended.

(2) Incorporated by reference to the registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on January 8, 2014.

(3) Incorporated by reference to the registrant’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 28, 2014.

(4) Incorporated by reference to the registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on September 19, 2014.

(5) Incorporated by reference to the registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November 13, 2015.

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EX-10.19

Exhibit 10.19

EMPLOYMENT AGREEMENT

This EMPLOYMENT AGREEMENT (“Agreement”), which is dated August 11, 2014 (the “Effective Date”), is made by and between Ideal Power Inc., a Delaware corporation, located at 4120 Freidrich Lane, Suite 100, Austin, Texas, 78744 and hereinafter referred to as “Company”, and Ryan O’Keefe, whose address is 15505 Boulder Heights Austin, TX 78738, hereinafter referred to as “Executive.” The purpose of this Agreement is to confirm the terms of the employment relationship between Company and Executive.

RECITALS

WHEREAS, Company wishes to retain the services of Executive, and Executive wishes to render services to Company, as its Senior Vice President of Business Development;

WHEREAS, Company and Executive wish to set forth in this Agreement the duties and responsibilities that Executive has agreed to undertake on behalf of Company, and the responsibilities that Company will owe to Executive.

THEREFORE, in consideration of the foregoing and of the mutual promises contained in this Agreement, Company and Executive (who are sometimes individually referred to as a “Party” and collectively referred to as the “Parties”) agree as follows:

AGREEMENT

1.            TERM.

Company hereby employs Executive as Senior Vice President of Business Development pursuant to the terms of this Agreement and Executive hereby accepts employment with Company pursuant to the terms of this Agreement, which will continue until terminated pursuant to Section 11 or 12 below.

2.            GENERAL DUTIES.

Executive shall devote his entire productive time, ability, and attention to Company’s business during Executive’s employment. Executive shall report to Company’s Chief Executive Officer and agrees to keep the Company’s CEO and Board of Directors (the “Board”) fully informed with regard to critical issues affecting the value and reputation of Company. Furthermore, in his capacity as Senior Vice President of Business Development, Executive shall be primarily responsible for creating and executing the Company’s commercial strategy, revenue generation and all activities related to sales and customer service to drive business growth, market share and shareholder value. Executive shall do and perform all services, acts, or things necessary or advisable to discharge his duties under this Agreement, and such other duties as are commonly performed by an employee of his rank in a publicly traded corporation or which may, from time to time, be prescribed by the Company through the Chief Executive Officer and Board of Directors. Executive agrees to cooperate with and work to the best of his ability with Company’s management team, which includes the Board and the officers and other employees, to continually improve Company’s reputation in its industry for quality products and performance.

1

3.            NONSOLICITATION AND PROPRIETARY PROPERTY AND CONFIDENTIAL INFORMATION PROVISIONS.

As a condition of his employment with Company, Executive has executed a Proprietary Information and Inventions Agreement, the terms of which are included by reference into this Agreement.

4.            COMPLIANCE WITH SECURITIES LAWS.

Executive acknowledges that he is subject to the provisions of Sections 10 and 16 of the Securities Exchange Act of 1934 and the rules and regulations promulgated thereunder. Executive acknowledges that Sections 10 and 16 and the rules and regulations promulgated thereunder may prohibit Executive from selling or transferring his securities in Company. Executive agrees that he will comply with Company’s policies that relate to securities laws, as stated from time to time.

5.            COMPENSATION.

(a)          Annual Salary. Company shall pay to Executive an annual base salary in the amount of $225,000. The salary paid during Executive’s employment shall be referred to in this Agreement as the “Annual Salary”. The Annual Salary shall be subject to any tax withholdings and/or employee deductions that are applicable. The Annual Salary shall be paid to Executive in equal installments in accordance with the periodic payroll practices of the Company for its employees. The Annual Salary will be subject to review and adjustment at the discretion of the Board no less frequently than annually.

(b)          Bonus. At least annually, Executive and the Compensation Committee of the Board of Directors shall meet to establish (i) performance standards and goals to be met by Executive and (ii) cash bonus targets based on the performance standards and goals that are achieved. The standards and goals will support a cash bonus of 50% of Executive’s Annual Salary. The standards and goals and the bonus targets shall be mutually agreed to by Executive and the CEO as approved by the Compensation Committee. Nothing in this subsection (b) shall prevent Executive and the CEO, and approved by the Compensation Committee, from mutually agreeing to alternatives to the computation of the bonus to be paid to Executive in accordance with this subsection (b) (the “Bonus”), which may be implemented and paid to Executive in place of the Bonus described herein. The Bonus shall be subject to any applicable tax withholdings and/or employee deductions.

(c)          Cost of Living Adjustment. Commencing as of January 1, 2015, and on each January 1st thereafter, the then effective Annual Salary shall be increased (but not decreased) by an amount which shall reflect the increase, if any, in the cost of living during the previous 12 months by adding to the Annual Salary an amount computed by multiplying the Annual Salary by the percentage by which the level of the Consumer Price Index for the Austin Metropolitan Area, as reported on January 1st of the new year by the Bureau of Labor Statistics of the United States Department of Labor has increased over its level as of January 1st of the prior year.

2

(d)          Participation In Employee Benefit Plans. Executive shall have the same rights, privileges, benefits and opportunities to participate in any of Company’s employee benefit plans which may now or hereafter be in effect on a general basis for executive officers or employees. During Executive’s employment, the Company shall provide, at Company’s sole expense, medical, dental and vision benefits for Executive, his spouse and children. At the discretion of the Board, Company may also provide, at its sole expense (i) disability insurance which, in the event of Executive’s disability, will replace no less than 60% of the Annual Salary being paid to Executive at the time the disability occurred and (ii) life insurance in an amount to be agreed upon by the Board and Executive. Irrespective of the foregoing, Company may change any benefits contractor, or discontinue any benefit without replacement, in its sole discretion, and any such change or discontinuance will not be a breach of this Agreement. In the event Executive receives payments from the disability insurer, Company shall have the right to offset such payments against the Annual Salary otherwise payable to Executive during the period for which such payments are made.

6.            EQUITY COMPENSATION.

In accordance with that certain offer letter dated August 5, 2014, Company will issue to Executive an option to purchase 70,000 shares of Company’s common stock. The per share exercise price is equal to the closing price of Company’s common stock on September 8, 2014. The right to purchase the common stock will vest in equal increments over 4 years, on the anniversary of the grant date, which is September 8, 2014. The term of the option is 10 years. The terms of the option will be governed by the 2013 Equity Incentive Plan and the award agreement. During Executive’s employment and subject always to the discretion of the Compensation Committee of the Board, Executive will be eligible to receive additional awards from the 2013 Equity Incentive Plan (or any other equity incentive plan adopted by the Board).

7.            REIMBURSEMENT OF BUSINESS EXPENSES.

Company shall promptly reimburse Executive for all reasonable business expenses incurred by Executive in connection with the business of Company. However, each such expenditure shall be reimbursable only if Executive furnishes to Company adequate records and other documentary evidence required by federal and state statutes and regulations issued by the appropriate taxing authorities for the substantiation of each such expenditure as an income tax deduction.

8.            PAID TIME OFF.

Executive shall be entitled to four weeks of paid time off each year; provided, however, failure to use paid time off by the end of the year in which it is earned will prevent the accumulation of additional paid time off in excess of four weeks. Said four weeks leave time includes sick leave time, vacation time and personal days off.

3

9.            INDEMNIFICATION OF LOSSES.

So long as Executive’s actions were taken in good faith and in furtherance of Company’s business and within the scope of Executive’s duties and authority, Company shall indemnify and hold Executive harmless to the full extent of the law from any and all claims, losses and expenses sustained by Executive as a result of any action taken by him to discharge his duties under this Agreement, and Company shall defend Executive, at Company’s expense, in connection with any and all claims by stockholders or third parties.

10.          PERSONAL CONDUCT.

Executive agrees promptly and faithfully to comply with all present and future policies, requirements, directions, requests and rules and regulations of Company in connection with Company’s business. Executive further agrees to conform to all laws and regulations and not at any time to commit any act or become involved in any situation or occurrence tending to bring Company into public scandal, ridicule or which will reflect unfavorably on the reputation of Company.

11.          TERMINATION FOR CAUSE.

The Board may terminate Executive for cause immediately, without notice, if Company reasonably concludes that Executive has committed fraud, theft, embezzlement, misappropriation of Company funds or other property, or any felony. The Board may also terminate Executive for cause for any of the following:

(a)          Breach by Executive of any material provision of this Agreement;

(b)          Violation by Executive of any statutory or common law duty of loyalty to Company; or

(c)          A material violation by Executive of Company’s employment policies; or

(d)          Commission of such acts of dishonesty, gross negligence, or willful misconduct as would prevent the effective performance of Executive’s duties or which result in material harm to Company or its business.

The Board may terminate this Agreement for cause by giving written notice of termination to Executive, provided, however, if the Board declares Executive to be in default of this Agreement under subsection (a) above because Executive fails to substantially perform his material duties and responsibilities under this Agreement, the Board shall deliver a written demand for substantial performance of such duties and responsibilities to Executive. Such demand must identify the manner in which the Board believes that Executive has not substantially performed his duties, and Executive shall have a period of 30 days to correct the deficient performance. Upon termination for cause, the obligations of Executive and Company under this Agreement shall immediately cease. Such termination shall be without prejudice to any other remedy to which Company may be entitled either at law, in equity, or under this Agreement. If Executive’s employment is terminated pursuant to this Section 11, Company shall pay to Executive (i) Executive’s accrued but unpaid Annual Salary and the value of unused paid time off through the effective date of the termination; (ii) Executive’s accrued but unpaid Bonus, if any; and (iii) business expenses incurred prior to the effective date of termination. Executive shall not be entitled to continue to participate in any employee benefit plans except to the extent provided in such plans for terminated participants, or as may be required by applicable law.

4

12.          TERMINATION WITHOUT CAUSE.

(a)          Death. Executive’s employment shall terminate upon the death of Executive. Upon such termination, the obligations of Executive and Company under this Agreement shall immediately cease.

(b)          Disability. The Board reserves the right to terminate Executive’s employment upon 30 days written notice if, for a period of 90 days, Executive is prevented from discharging his substantial or material duties due to any physical or mental disability.

(c)          Election By Executive. Executive’s employment may be terminated at any time by Executive upon not less than 30 days written notice by Executive to the Board.

(d)          Election By Company. Executive’s employment may be terminated at any time by Company upon not less than 30 days written notice by the Board to Executive.

(e)          Termination Due to a Change in Control. Executive’s employment may be terminated upon a Change in Control. For purposes of this Agreement, the term “Change in Control” shall mean the sale or disposition by Company to an unrelated third party of substantially all of its business or assets, or the sale of the capital stock of Company in connection with the sale or transfer of a Controlling Interest in Company to an unrelated third party, or the merger or consolidation of Company with another corporation as part of a sale or transfer of a Controlling Interest in Company to an unrelated third party. For purposes of this definition, the term “Controlling Interest” means the sale or transfer of Company’s securities representing at least 50.1% of the voting power. It will be presumed that a termination is a termination under this subsection (e) rather than a termination under subsection (d) (Election by Company) if Executive’s employment is terminated during the period that begins when negotiations for the Change in Control begin and ends on the six month anniversary of the closing of the Change in Control transaction and such termination is not a termination for cause pursuant to Section 11 or a termination resulting from Executive’s death, disability or election pursuant to subsections (a), (b) or (c) of this Section 12.

If Executive’s employment is terminated pursuant to subsections (a), (b), or (c) of this Section 12, Company shall pay to Executive (i) Executive’s accrued but unpaid Annual Salary and the value of unused paid time off through the effective date of the termination; (ii) Executive’s accrued but unpaid Bonus, if any; and (iii) business expenses incurred prior to the effective date of termination. Executive shall not be entitled to continue to participate in any employee benefit plans except to the extent provided in such plans for terminated participants, or as may be required by applicable law.

If Executive’s employment is terminated pursuant to subsection (d) of this Section 12, Company shall pay to Executive (i) Executive’s accrued but unpaid Annual Salary and the value of unused paid time off through the effective date of the termination; (ii) Executive’s accrued but unpaid Bonus, if any; (iii) business expenses incurred prior to the effective date of termination; and (iv) severance (the “Severance Payment”) consisting of six months of the Annual Salary, less legally required deductions. Company may elect in its sole discretion whether to pay the Severance Payment in one lump sum or on regular pay days for the six months following termination of Executive’s employment. For a termination under subsection (d), Executive shall be entitled to continue to participate in employee benefit plans described in Section 5(d), at Company’s sole expense, for six months following termination of Executive’s employment.

5

If Executive’s employment is terminated pursuant to subsection (e) of this Section 12, Executive shall be entitled to receive (i) Executive’s accrued but unpaid Annual Salary and the value of unused paid time off through the effective date of the termination; (ii) Executive’s accrued but unpaid Bonus, if any; (iii) business expenses incurred prior to the effective date of termination; and (iv) an amount equal to one-half the Annual Salary. In addition, any equity award that is scheduled to vest any time after the termination of Executive’s employment will vest immediately upon the termination of Executive’s employment pursuant to subsection (e).

In the event of a termination of Executive’s employment pursuant to subsections (a), (b), (c) and (d) above, all other rights Executive has under any benefit or stock option plans and programs shall be determined in accordance with the terms and conditions of such plans and programs.

With the exception of the terms of this Section 12 and any obligations, duties and responsibilities Executive has under the Proprietary Information and Inventions Agreement, upon termination of Executive’s employment the obligations of Executive and Company under this Agreement shall immediately cease.

13.          MISCELLANEOUS.

(a)            Preparation of Agreement. It is acknowledged by each Party that such Party either had separate and independent advice of counsel or the opportunity to avail itself or himself of same. In light of these facts it is acknowledged that no Party shall be construed to be solely responsible for the drafting hereof, and therefore any ambiguity shall not be construed against any Party as the alleged draftsman of this Agreement.

(b)            Cooperation. Each Party agrees, without further consideration, to cooperate and diligently perform any further acts, deeds and things and to execute and deliver any documents that may from time to time be reasonably necessary or otherwise reasonably required to consummate, evidence, confirm and/or carry out the intent and provisions of this Agreement, all without undue delay or expense.

(c)            Interpretation.

(i)          Entire Agreement/No Collateral Representations. Each Party expressly acknowledges and agrees that this Agreement, including all exhibits attached hereto: (1) is the final, complete and exclusive statement of the agreement of the Parties with respect to the subject matter hereof; (2) supersedes any prior or contemporaneous agreements, promises, assurances, guarantees, representations, understandings, conduct, proposals, conditions, commitments, acts, course of dealing, warranties, interpretations or terms of any kind, oral or written (collectively and severally, the “Prior Agreements”), and that any such prior agreements are of no force or effect except as expressly set forth herein; and (3) may not be varied, supplemented or contradicted by evidence of Prior Agreements, or by evidence of subsequent oral agreements. Any agreement hereafter made shall be ineffective to modify, supplement or discharge the terms of this Agreement, in whole or in part, unless such agreement is in writing and signed by the Party against whom enforcement of the modification or supplement is sought.

6

(ii)         Waiver. No breach of any agreement or provision herein contained, or of any obligation under this Agreement, may be waived, nor shall any extension of time for performance of any obligations or acts be deemed an extension of time for performance of any other obligations or acts contained herein, except by written instrument signed by the Party to be charged or as otherwise expressly authorized herein. No waiver of any breach of any agreement or provision herein contained shall be deemed a waiver of any preceding or succeeding breach thereof, or a waiver or relinquishment of any other agreement or provision or right or power herein contained.

(iii)        Remedies Cumulative. The remedies of each Party under this Agreement are cumulative and shall not exclude any other remedies to which such Party may be lawfully entitled.

(iv)        Severability. If any term or provision of this Agreement or the application thereof to any person or circumstance shall, to any extent, be determined to be invalid, illegal or unenforceable under present or future laws effective during the term of this Agreement, then and, in that event: (A) the performance of the offending term or provision (but only to the extent its application is invalid, illegal or unenforceable) shall be excused as if it had never been incorporated into this Agreement, and, in lieu of such excused provision, there shall be added a provision as similar in terms and amount to such excused provision as may be possible and be legal, valid and enforceable, and (B) the remaining part of this Agreement (including the application of the offending term or provision to persons or circumstances other than those as to which it is held invalid, illegal or unenforceable) shall not be affected thereby and shall continue in full force and effect to the fullest extent provided by law.

(v)         No Third Party Beneficiary. Notwithstanding anything else herein to the contrary, the parties specifically disavow any desire or intention to create any third party beneficiary obligations, and specifically declare that no person or entity, other than as set forth in this Agreement, shall have any rights hereunder or any right of enforcement hereof.

(vi)        Headings; References; Incorporation; Gender. The headings used in this Agreement are for convenience and reference purposes only, and shall not be used in construing or interpreting the scope or intent of this Agreement or any provision hereof. References to this Agreement shall include all amendments or renewals thereof. Any exhibit referenced in this Agreement shall be construed to be incorporated in this Agreement. As used in this Agreement, each gender shall be deemed to include the other gender, including neutral genders or genders appropriate for entities, if applicable, and the singular shall be deemed to include the plural, and vice versa, as the context requires.

7

(d)           Enforcement.

(i)          Applicable Law. This Agreement and the rights and remedies of each Party arising out of or relating to this Agreement (including, without limitation, equitable remedies) shall be solely governed by, interpreted under, and construed and enforced in accordance with the laws (without regard to the conflicts of law principles thereof) of the State of Texas, as if this agreement were made, and as if its obligations are to be performed, wholly within the State of Texas.

(ii)         Consent to Jurisdiction and Venue. Any action or proceeding arising out of or relating to this Agreement shall be filed in and heard and litigated solely before the state courts of Texas within Travis County.

(iii)        Attorneys’ Fees. If court proceedings are required to enforce any provision of this Agreement, the substantially prevailing or successful Party shall be entitled to an award of the reasonable and necessary expenses of litigation, including reasonable attorneys’ fees.

(e)           No Assignment of Rights or Delegation of Duties by Executive. Executive’s rights and benefits under this Agreement are personal to him and therefore (i) no such right or benefit shall be subject to voluntary or involuntary alienation, assignment or transfer; and (ii) Executive may not delegate his duties or obligations hereunder.

(f)           Notices. Unless otherwise specifically provided in this Agreement, all notices, demands, requests, consents, approvals or other communications (collectively and severally called “Notices”) required or permitted to be given hereunder, or which are given with respect to this Agreement, shall be in writing, and shall be given by: (A) personal delivery (which form of Notice shall be deemed to have been given upon delivery), (B) by private overnight delivery service (which forms of Notice shall be deemed to have been given upon confirmed delivery by the delivery agency), or (C) by mailing in the United States mail by registered or certified mail, return receipt requested, postage prepaid (which forms of Notice shall be deemed to have been given upon the 5th business day following the date mailed). Notices shall be addressed to the address hereinabove set forth in the introductory paragraph of this Agreement, or to such other address as the receiving Party shall have specified most recently by like Notice, with a copy to the other Parties hereto. Any Notice given to the estate of a Party shall be sufficient if addressed to the party as provided in this subsection.

(g)           Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original, and all of which together shall constitute one and the same instrument, binding on all parties hereto. Any signature page of this Agreement may be detached from any counterpart of this Agreement and reattached to any other counterpart of this Agreement identical in form hereto by having attached to it one or more additional signature pages.

(h)           Execution by All Parties Required to be Binding: Electronically Transmitted Documents. This Agreement shall not be construed to be an offer and shall have no force and effect until this Agreement is fully executed by all Parties hereto. If a copy or counterpart of this Agreement is originally executed and such copy or counterpart is thereafter transmitted electronically by facsimile or similar device, such facsimile document shall for all purposes be treated as if manually signed by the Party whose facsimile signature appears.

8

IN WITNESS WHEREOF, the parties have executed this Agreement.

Company:
IDEAL POWER INC.
By:	/s/ R. Daniel Brdar
Its:	CEO and Chairman
Executive:
/s/ Ryan K. O’Keefe
Ryan K. O’Keefe

9

EX-31.1

Exhibit 31.1

CERTIFICATION

I, R. Daniel Brdar, certify that:

1. I have reviewed this annual report on Form 10-K of Ideal Power Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15-d-15(e)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

c) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 30, 2016

/s/ R. Daniel Brdar                                                           

R. Daniel Brdar

Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Timothy Burns, certify that:

1. I have reviewed this annual report on Form 10-K of Ideal Power Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15-d-15(e)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

c) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 30, 2016

/s/ Timothy Burns                                                           

Timothy Burns

Chief Financial Officer

(Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION

In connection with the periodic report of Ideal Power Inc. (the “Company”) on Form 10-K for the year ending December 31, 2015 as filed with the Securities and Exchange Commission (the “Report”), we, R. Daniel Brdar, Chief Executive Officer (Principal Executive Officer) and Timothy Burns, Chief Financial Officer (Principal Financial and Accounting Officer) of the Company, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of our knowledge:

(1)  The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934, and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Date: March 30, 2016

/s/ R. Daniel Brdar                                                           

R. Daniel Brdar

Chief Executive Officer

(Principal Executive Officer)

/s/ Timothy Burns                                                           

Timothy Burns

Chief Financial Officer

(Principal Financial and Accounting Officer)

XML

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2015	Mar. 23, 2016	Jun. 30, 2015
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Entity Registrant Name	Ideal Power Inc.
Entity Central Index Key	0001507957
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Public Float			$ 51,870,059
Trading Symbol	IPWR
Entity Common Stock, Shares Outstanding		9,557,747

XML

Balance Sheets - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 15,022,286	$ 7,912,011
Accounts receivable, net	872,874	446,521
Inventories, net	648,009	251,338
Prepayments and other current assets	296,355	263,605
Total current assets	16,839,524	8,873,475
Property and equipment, net	925,899	374,376
Intangible assets, net	1,466,811	1,012,964
Other assets	17,920	17,920
Total assets	19,250,154	10,278,735
Current liabilities:
Accounts payable	1,338,828	441,636
Accrued expenses	1,240,093	773,119
Total current liabilities	$ 2,578,921	$ 1,214,755
Commitments
Stockholders' equity:
Common stock, $0.001 par value; 50,000,000 shares authorized; 9,549,544 and 7,048,235 shares issued and outstanding at December 31, 2015 and 2014, respectively	$ 9,550	$ 7,048
Additional paid-in capital	50,757,414	32,712,020
Treasury stock	(2,657)	(2,657)
Accumulated deficit	(34,093,074)	(23,652,431)
Total stockholders' equity	16,671,233	9,063,980
Total Liabilities and Stockholders' Equity	$ 19,250,154	$ 10,278,735

XML

Balance Sheets [Parenthetical] - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common Stock, Shares Authorized	50,000,000	50,000,000
Common Stock, Shares, Issued	9,549,544	7,048,235
Common Stock, Shares, Outstanding	9,549,544	7,048,235

XML

Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Products	$ 4,259,909	$ 1,215,015
Grants	0	579,079
Total revenue	4,259,909	1,794,094
Cost of revenues:
Products	3,872,672	1,545,671
Grant research and development costs	0	643,421
Total cost of revenue	3,872,672	2,189,092
Gross profit (loss)	387,237	(394,998)
Operating expenses:
Research and development	5,521,390	2,340,227
General and administrative	3,693,450	2,993,131
Sales and marketing	1,644,512	1,199,578
Total operating expenses	10,859,352	6,532,936
Loss from operations	(10,472,115)	(6,927,934)
Interest income	31,472	27,715
Net loss	$ (10,440,643)	$ (6,900,219)
Net loss per share - basic and fully diluted (in dollars per share)	$ (1.23)	$ (0.98)
Weighted average number of shares outstanding - basic and fully diluted (in shares)	8,495,735	7,016,872

XML

Statement of Stockholders' Equity - USD ($)	Total	Common Stock [Member]	Common Stock Issuable Member [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2013	$ 14,834,948	$ 6,932	$ 151,665	$ 31,431,220	$ (2,657)	$ (16,752,212)
Balance (in shares) at Dec. 31, 2013		6,931,968	32,525
Common stock issued for services	50,004	$ 39	$ (151,665)	201,630	0	0
Common stock issued for services (in shares)		38,903	(32,525)
Warrants issued for consulting services	130,179	$ 0	$ 0	130,179	0	0
Exercise of options and warrants	4,966	$ 77	$ 0	4,889	0	0
Exercise of options and warrants (in shares)		77,364	0
Stock-based compensation	944,102	$ 0	$ 0	944,102	0	0
Net loss for the year	(6,900,219)	0	0	0	0	(6,900,219)
Balance at Dec. 31, 2014	9,063,980	$ 7,048	$ 0	32,712,020	(2,657)	(23,652,431)
Balance (in shares) at Dec. 31, 2014		7,048,235	0
Shares issued in offering, net of issuance costs	15,924,405	$ 2,226	$ 0	15,922,179	0	0
Shares issued in offering, net of issuance costs (in shares)		2,225,825	0
Warrants issued for consulting services	84,900	$ 0	$ 0	84,900	0	0
Exercise of options and warrants	653,828	$ 266	$ 0	653,562	0	0
Exercise of options and warrants (in shares)		265,484	0
Issuance of restricted stock	0	$ 10	$ 0	(10)	0	0
Issuance of restricted stock (in shares)		10,000	0
Stock-based compensation	1,384,763	$ 0	$ 0	1,384,763	0	0
Net loss for the year	(10,440,643)	0	0	0	0	(10,440,643)
Balance at Dec. 31, 2015	$ 16,671,233	$ 9,550	$ 0	$ 50,757,414	$ (2,657)	$ (34,093,074)
Balance (in shares) at Dec. 31, 2015		9,549,544	0

XML

Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net loss	$ (10,440,643)	$ (6,900,219)
Adjustments to reconcile net loss to net cash used in operating activities:
Allowance for doubtful accounts	97,344	24,775
Write-down of inventory	0	62,851
Depreciation and amortization	232,852	67,793
Write-off of fixed assets	53,855	0
Write-off of capitalized patents	145,691	0
Stock-based compensation	1,384,763	944,102
Fair value of warrants issued for services	84,900	130,179
Common stock issued for services	0	50,004
Decrease (increase) in operating assets:
Accounts receivable	(523,697)	(218,890)
Inventories	(412,698)	205,468
Prepaid expenses and other assets	(32,750)	(50,030)
Increase (decrease) in operating liabilities:
Accounts payable	897,192	(97,509)
Accrued expenses	466,974	311,926
Net cash used in operating activities	(8,046,217)	(5,469,550)
Cash flows from investing activities:
Purchase of property and equipment	(791,605)	(342,247)
Acquisition of intangible assets	(630,136)	(418,255)
Net cash used in investing activities	(1,421,741)	(760,502)
Cash flows from financing activities:
Net proceeds from issuance of common stock	15,924,405	0
Exercise of options and warrants	653,828	4,966
Net cash provided by financing activities	16,578,233	4,966
Net increase (decrease) in cash and cash equivalents	7,110,275	(6,225,086)
Cash and cash equivalents at beginning of year	7,912,011	14,137,097
Cash and cash equivalents at end of year	$ 15,022,286	$ 7,912,011

XML

Organization and Description of Business

12 Months Ended

Dec. 31, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Business Description and Basis of Presentation [Text Block]

Note 1 — Organization and Description of Business

Ideal Power Inc. (the “Company”) was incorporated in Texas on May 17, 2007 under the name Ideal Power Converters, Inc. The Company changed its name to Ideal Power Inc. on July 8, 2013 and re-incorporated in Delaware on July 15, 2013. With headquarters in Austin, Texas, it develops power conversion solutions with an initial focus on stand-alone commercial and industrial grid storage, combined solar and storage, and microgrid applications. The principal products of the Company are power conversion systems, including 2-port and multi-port products.

Since its inception, the Company has generated limited revenues from the sale of products and has financed its research and development efforts and operations primarily through the sale of common stock and, prior to its initial public offering, the issuance of convertible debt.

XML

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

Note 2 — Summary of Significant Accounting Policies

Basis of Presentation

The preparation of financial statements in conformity with US GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Accounts Receivable

Trade accounts receivable are stated net of an allowance for doubtful accounts. The Company performs ongoing credit evaluations of its customers’ financial condition. In limited instances, the Company may require an upfront deposit and, in most cases, the Company does charge interest on past due amounts. Management estimates the allowance for doubtful accounts based on review and analysis of specific customer balances that may not be collectible, customer payment history and any other customer-specific information that may impact the evaluation of the specific customer’s credit. Accounts are considered for write-off when they become past due and when it is determined that the probability of collection is remote. The allowance for doubtful accounts was $15,145 and $24,775 at December 31, 2015 and 2014, respectively.

Inventories

Inventories are stated at the lower of cost (first in, first out method) or market value. Inventory quantities on hand are reviewed regularly and a write-down for excess and obsolete inventory is recorded based primarily on an estimated forecast of product demand, market conditions and anticipated production requirements in the near future. There was a $4,274 and $40,703 reserve for excess and obsolete inventory at December 31, 2015 and 2014, respectively, related to component parts not anticipated to have a future use.

Property and Equipment

Property and equipment are stated at historical cost less accumulated depreciation and amortization. Major additions and improvements are capitalized while maintenance and repairs that do not improve or extend the useful life of the respective asset are expensed. Depreciation and amortization of property and equipment is computed using the straight-line method over their estimated useful lives. Leasehold improvements are amortized over the shorter of the life of the asset or the related leases. Estimated useful lives of the principal classes of assets are as follows:

Leasehold improvements	Shorter of lease term or useful life
Machinery and equipment	5 years
Furniture, fixtures and computers	3 – 5 years

Intangible Assets

The Company’s intangible assets are primarily composed of patents, which are recorded at cost. The Company capitalizes third party legal costs and filing fees, if any, associated with obtaining patents or other intangible assets. Once the intangible asset has been placed in service, the Company amortizes these costs over the shorter of the asset’s legal life, generally 20 years, or its estimated economic life using the straight-line method.

Impairment of Long-Lived Assets

The long-lived assets held and used by the Company are reviewed for impairment no less frequently than annually or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In the event that facts and circumstances indicate that the cost of any long-lived assets may be impaired, an evaluation of recoverability is performed. Management has determined that there was an impairment in the value of long-lived assets in the amount of $199,546 during the year ended December 31, 2015. There were no impairments in the value of long-lived assets in the year ended December 31, 2014.

Fair Value of Financial Instruments

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Assets and liabilities measured at fair value are categorized based on whether or not the inputs are observable in the market and the degree that the inputs are observable. The categorization of financial assets and liabilities within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

The Company’s financial instruments primarily consist of cash and cash equivalents, accounts receivable and accounts payable. As of the balance sheet dates, the estimated fair values of the financial instruments were not materially different from their carrying values as presented on the balance sheets. This is primarily attributed to the short-term maturities of these instruments. The Company did not identify any other non-recurring assets and liabilities that are required to be presented in the balance sheets at fair value.

Revenue Recognition

Revenue from product sales is recognized when the risks of loss and title pass to the customer, as specified in (1) the respective sales agreements and (2) other revenue recognition criteria as prescribed by Staff Accounting Bulletin (“SAB”) No. 101 (SAB 101), “Revenue Recognition in Financial Statements,” as amended by SAB No. 104, “Revenue Recognition”. The Company generally sells its products FOB shipping and recognizes revenue when products are shipped.

In prior years, the Company received payments from government entities in the form of government grants. Government grants are agreements that generally provide the Company with cost reimbursement for certain types of research and development activities over a contractually defined period. Revenues from government grants are recognized in the period during which the Company incurs the related costs, provided that the Company has incurred the cost in accordance with the specifications and work plans determined between the Company and the government entity. Costs incurred related to the grants are recorded as grant research and development costs. At December 31, 2014, the Company had recognized all grant revenues related to the ARPA-E grant and no grant revenue was recognized in the year ended December 31, 2015. Grant receivables were $132,227 at December 31, 2014 and were included in accounts receivable.

Product Warranties

The Company generally provides a ten year limited warranty on its products. Accruals for product warranties are estimated based upon limited historical warranty experience, engineering experience and judgment, and third party assessments of the reliability of the Company’s 30kW products. Accruals for product warranties are recorded in cost of revenues at the time revenue is recognized in order to match revenues with related expenses. The Company assesses the adequacy of its estimated warranty liability quarterly and adjusts the reserve, included in accrued expenses, as necessary. Although any such adjustments were not material in the years ended December 31, 2015 and 2014, any such adjustments could be material in the future if estimates differ significantly from actual warranty experience.

Research and Development

Grant research and development are costs incurred solely related to grant revenues, and are classified as a line item under cost of revenues.

Other research and development costs are presented as a line item under operating expenses and are expensed as incurred. Total research and development costs incurred during the years ended December 31, 2015 and 2014 amounted to $5,521,390 and $2,983,648, respectively, of which $643,421 was included in cost of revenues in the year ended December 31, 2014.

Income Taxes

The Company accounts for income taxes using an asset and liability approach which allows for the recognition and measurement of deferred tax assets based upon the likelihood of realization of tax benefits in future years. Under the asset and liability approach, deferred taxes are provided for the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. A valuation allowance is provided for deferred tax assets if it is more likely than not these items will either expire before the Company is able to realize their benefits, or that future deductibility is uncertain. At December 31, 2015 and 2014, the Company has established a full reserve against all deferred tax assets.

Tax benefits from an uncertain tax position are recognized only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate resolution.

Net Loss Per Share

The Company applies Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 260, “Earnings per Share.” Basic earnings (loss) per share is computed by dividing earnings (loss) available to common stockholders by the weighted-average number of common shares outstanding. Diluted earnings (loss) per share is computed similar to basic earnings (loss) per share except that the denominator is increased to include additional common shares available upon exercise of stock options and warrants using the treasury stock method. In periods with a net loss, no common share equivalents are included because their effect would be anti-dilutive. At December 31, 2015 and 2014, potentially dilutive shares outstanding amounted to 2,846,325 and 2,932,155, respectively.

Stock Based Compensation

The Company applies FASB ASC 718, “Stock Compensation,” when recording stock based compensation. The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option valuation model.

The Company uses a Monte Carlo simulation pricing model to determine the fair value of performance stock units (“PSUs”). A typical Monte Carlo exercise simulates a distribution of stock prices to yield an expected distribution of stock prices during and at the end of the performance period. The simulations are repeated many times in order to derive a probabilistic assessment of stock performance. The stock-paths are simulated using assumptions which include expected stock price volatility and risk-free interest rate.

The Company accounts for stock issued to non-employees in accordance with the provisions of FASB ASC 505-50 “Equity Based Payments to Non-Employees.” FASB ASC 505-50 states that equity instruments that are issued in exchange for the receipt of goods or services should be measured at the fair value of the consideration received or the fair value of the equity instruments issued, whichever is more reliably measurable. The measurement date occurs as of the earlier of (a) the date at which a performance commitment is reached or (b) absent a performance commitment, the date at which the performance necessary to earn the equity instruments is complete (that is, the vesting date).

The Company issues common stock upon exercise of equity awards and warrants.

Presentation of Sales Taxes

Certain states impose a sales tax on the Company’s sales to nonexempt customers. The Company collects that sales tax from customers and remits the entire amount to the states. The Company’s accounting policy is to exclude the tax collected and remitted to the states from revenues and cost of revenues.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains its cash with a major financial institution located in the United States. Balances are insured by the Federal Deposit Insurance Corporation up to $250,000. The Company maintains balances in excess of federally insured limits. The Company has not experienced losses in such accounts and believes it is not exposed to significant credit risk regarding its cash and cash equivalents.

The Company encounters a certain amount of risk as a result of a concentration of revenue from a few significant customers. Credit is extended to customers based on an evaluation of their financial condition. In limited instances, the Company may require an upfront deposit and, in most cases, the Company does charge interest on past due amounts. The Company performs ongoing credit evaluations of its customers and records an allowance for potential bad debts based on available information.

The Company had revenue from four customers that accounted for 66% of net revenue for the year ended December 31, 2015, and from a government entity and three customers that accounted for 76% of net revenue for the year ended December 31, 2014. The Company had an accounts receivable balance from three customers that accounted for 66% of trade receivables at December 31, 2015, and three customers that accounted for 92% of trade receivables at December 31, 2014.

Reclassifications

Certain items in prior financial statements have been reclassified to conform to current year presentation. These changes did not impact total revenue, loss from operations or net loss.

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers. ASU 2014-09 will require that companies recognize revenue based on the value of transferred goods or services as they occur in the contract. ASU 2014-09 also will require additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. Based on the FASB’s Exposure Draft Update approved in July 2015, Revenue from Contracts With Customers (Topic 606): Deferral of the Effective Date, ASU 2014-09 is now effective for reporting periods beginning after December 15, 2017, with early adoption permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Entities will be able to transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The adoption of ASU 2014-09 is not expected to have any impact on the Company’s financial statement presentation or disclosures.

In August 2014, the FASB issued Accounting Standards Update No. 2014-15 (ASU 2014-15), Presentation of Financial Statements – Going Concern (Subtopic 205-10). ASU 2014-15 provides guidance as to management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of ASU 2014-15 is not expected to have any impact on the Company’s financial statement presentation or disclosures.

In November 2015, the FASB issued Accounting Standards Update No. 2015-17 (ASU 2015-17), Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes. ASU 2015-17 require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. ASU 2015-17 is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The adoption of ASU 2015-17 is not expected to have an impact the Company’s financial statement presentation or disclosures.

Management does not believe that any other recently issued, but not yet effective, accounting standards, if adopted, will have a material effect on the financial statements.

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Accounts Receivable

12 Months Ended

Dec. 31, 2015

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Note 3 — Accounts Receivable

Accounts receivable, net consisted of the following:

	December 31,
	2015		2014
Trade receivables	$	803,599	$	231,412
Grant receivables		—		132,227
Other receivables		84,420		107,657
		888,019		471,296
Allowance for doubtful accounts		(15,145)		(24,775)
	$	872,874	$	446,521

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Inventories

12 Months Ended

Dec. 31, 2015

Inventory Disclosure [Abstract]

Inventory Disclosure [Text Block]

Note 4 — Inventories

Inventories, net consisted of the following:

	December 31,
	2015		2014
Raw materials	$	124,498	$	143,289
Finished goods		527,785		148,752
		652,283		292,041
Reserve for obsolescence		(4,274)		(40,703)
	$	648,009	$	251,338

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Prepayments and Other Current Assets

12 Months Ended

Dec. 31, 2015

Prepaid Expense and Other Assets, Current [Abstract]

Prepaid Expense And Other Current Assets Disclosure [Text Block]

Note 5 — Prepayments and Other Current Assets

Prepayments and other current assets consisted of the following:

	December 31,
	2015		2014
Prepaid insurance	$	168,481	$	158,400
Prepaid software		59,874		4,557
Other		68,000		100,648
	$	296,355	$	263,605

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Property and Equipment

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

Note 6 — Property and Equipment

Property and equipment, net consisted of the following:

	December 31,
	2015		2014
Machinery and equipment	$	676,881	$	263,142
Building leasehold improvements		362,300		48,280
Furniture, fixtures, software and computers		195,497		183,237
		1,234,678		494,659
Accumulated depreciation and amortization		(308,779)		(120,283)
	$	925,899	$	374,376

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Intangible Assets

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Disclosure [Text Block]

Note 7 — Intangible Assets

Intangible assets, net consisted of the following:

	December 31,
	2015		2014
Patents	$	1,313,269	$	1,040,219
Other intangible assets		211,394		—
		1,524,663		1,040,219
Accumulated amortization		(57,852)		(27,255)
	$	1,466,811	$	1,012,964

Amortization expense amounted to $30,597 and $14,204 for the years ended December 31, 2015 and 2014, respectively. Amortization expense for the succeeding five years and thereafter is $47,277 (2016); $47,277 (2017); $47,277 (2018); $47,277 (2019); $47,277 (2020); and $618,520 (thereafter).

At December 31, 2015 and 2014, the Company had capitalized approximately $612,000 and $746,000, respectively, for costs related to patents that have not been awarded. 

On July 24, 2015 and December 21, 2015, the Company entered into licensing agreements which expire on February 7, 2033. The agreements provide the Company an exclusive royalty-free license associated with semiconductor power switches which enhances its intellectual property portfolio. The Company recorded legal and acquisition costs of $211,394 associated with the licensing agreements as intangible assets and will amortize the cost over the 17-year term of the agreements.

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Accrued Expenses

12 Months Ended

Dec. 31, 2015

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]

Note 8 — Accrued Expenses

Accrued expenses consisted of the following:

	December 31,
	2015		2014
Accrued compensation	$	616,029	$	548,953
Warranty reserve		358,296		143,364
Other		265,768		80,802
	$	1,240,093	$	773,119

The changes in warranty reserve were as follows:

	2015		2014
Balance, beginning of the year	$	143,364	$	113,078
Provisions for warranty and beta replacements		235,377		76,671
Warranty payments or beta replacements		(20,445)		(46,385)
Balance, end of the year	$	358,296	$	143,364

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Common Stock

12 Months Ended

Dec. 31, 2015

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

Note 9 — Common Stock

All shares of common stock have a par value of $0.001. Each holder of common stock is entitled to one vote per share outstanding.

During the year ended December 31, 2015, the Company completed an underwritten follow-on offering of 2,225,825 shares, inclusive of the underwriter’s overallotment of 290,325 shares, of its common stock. Gross proceeds were $17,250,144 before underwriting discounts and offering expenses. Net cash proceeds were $15,924,405 after offering fees and expenses of $1,325,739, including the underwriting discount of $1,035,008 and other costs of $290,731. In addition, common stock activity included the exercise of options and warrants for an aggregate 265,484 shares of the Company’s common stock for net proceeds of $653,828. The Company also granted 10,000 restricted shares of common stock to an employee as a performance award.

During the year ended December 31, 2014, common stock activity consisted of the exercise of options and warrants for an aggregate 77,364 shares of the Company’s common stock for proceeds of $4,966 and the issuance of an aggregate 38,903 shares of the Company’s common stock with a fair value of $201,669 for services, of which 32,525 shares of the Company’s common stock with a fair value of $151,665 were issuable at December 31, 2013.

On December 1, 2014, the Company filed a Form S-3 shelf registration statement with the Securities and Exchange Commission. The registration statement allows the Company to offer up to an aggregate $75 million of common stock, preferred stock, warrants to purchase common stock or preferred stock or any combination thereof. After the May 2015 follow-on offering, $58 million is available to the Company under the registration statement.

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Stock Option Plan

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

Note 10 — Stock Option Plan

On May 17, 2013, the Company adopted the 2013 Equity Incentive Plan (the “Plan”) and reserved shares of common stock for issuance under the Plan not to exceed a maximum of 839,983 shares. The Plan is administered by the Compensation Committee of the Company’s Board of Directors. The persons eligible to participate in the Plan are employees (including officers), members of the Board of Directors, consultants and other independent advisors and contractors who provide services to the Company. Options issued under the Plan may have a term of up to ten years and may have variable vesting. The typical vesting schedule for stock options awarded under the Plan is a four year annual vesting schedule for employees and a one year quarterly vesting schedule for Board members.

On May 26, 2015, the stockholders approved an amendment to the Plan which increased shares available for issuance under the Plan by 1,250,000 shares. Also, on August 27, 2015, the Compensation Committee approved a restatement of the Plan in order to clarify the types of awards allowable under the plan to include restricted stock and PSUs. At December 31, 2015, there were 831,615 shares of common stock available for issuance under the Plan.

During the year ended December 31, 2015, the Company granted 182,600 and 38,502 stock options to purchase shares of common stock to employees and non-employee directors, respectively. The exercise price of the stock options issued to both employees and directors was the closing price of the Company’s stock on the date of grant. The options granted to employees vest in equal annual installments over 4 years while the options granted to directors vested in equal quarterly installments in 2015. The options granted in 2015 were valued at $974,329 using the Black-Scholes option pricing model. The compensation expense associated with these grants recognized during the year ended December 31, 2015 amounted to $231,395.

During the year ended December 31, 2015, the Company granted an employee 10,000 shares of restricted stock. The fair value of the restricted stock was $77,700 based on the closing market price of the Company’s stock on the date of grant, which will be recognized ratably over the four-year vesting period. Stock compensation expense of $7,284 related to this grant was recognized during the year ended December 31, 2015. Shares outstanding at December 31, 2015 include the 10,000 shares of unvested restricted stock.

During the year ended December 31, 2015, the Company also granted an employee 96,000 PSUs, which are subject to the satisfaction of certain market-based and continued service conditions. The market-based vesting criteria are separated into four tranches and require that the Company achieve certain stock price targets ranging from $9 per share to $15 per share during the four-year period following the grant date. With certain limited exceptions, continued employment with the Company on the fourth anniversary of the grant date is required in order for the PSUs to vest. The grant-date fair value of the PSUs was $405,997, or $4.23 per unit, using a Monte Carlo Simulation with a four-year life, 60% volatility and a risk free interest rate of 1.3%. The fair value of the PSUs is being recognized over the vesting period and $31,014 was recognized during the year ended December 31, 2015.

As permitted by SAB 107, management utilizes the simplified approach to estimate the expected term of stock options, which represents the period of time that options granted are expected to be outstanding. The risk free interest rate for periods within the contractual life of the option is based on the U.S. treasury yield in effect at the time of grant. The volatility is estimated based on the historical volatilities of comparable companies. The Company has never declared or paid dividends and has no plans to do so in the foreseeable future.

The assumptions used in the Black-Scholes model are as follows:

	For the year ended December 31,
	2015			2014
Risk-free interest rate		1.54% to 1.95	%		1.78 to 2.19	%
Expected dividend yield		0	%		0	%
Expected life		5.31 to 6.25 years			5.31 to 6.25 years
Expected volatility		60	%		60	%

A summary of the Company’s stock option activity and related information is as follows:

	2015						2014
					Weighted						Weighted
			Weighted		Average				Weighted		Average
			Average		Remaining				Average		Remaining
			Exercise		Life				Exercise		Life
	Stock Options		Price		(in years)		Stock Options		Price		(in years)
Outstanding at January 1		1,368,047	$	6.41		8.7		485,573	$	4.24		8.2
Granted		221,102	$	7.80				899,526	$	7.49
Exercised		(201,389)	$	4.47				(10,500)	$	0.10
Forfeited/Expired/Exchanged		(55,437)	$	6.13				(6,552)	$	4.53
Outstanding at December 31		1,332,323	$	6.94		8.4		1,368,047	$	6.41		8.7
Exercisable at December 31		572,623	$	6.02		7.8		467,204	$	4.65		7.3

During the year ended December 31, 2015, option holders exercised 90,609 options on a cashless basis and received 49,987 shares of common stock and 40,622 shares were used to cover the exercise price. In addition, option holders exercised 110,780 options and paid the exercise price in cash. The Company received $553,871 in net cash proceeds for the exercise of options during 2015.

The following table sets forth additional information about stock options outstanding at December 31, 2015:

			Weighted Average
	Options		Remaining Life		Weighted Average		Options
Range of Exercise Prices	Outstanding		(in years)		Exercise Price		Exercisable
$0.41 – $5.00		226,645		6.8	$	4.05		208,395
$5.01 – $7.50		477,928		8.5	$	7.00		228,203
$7.51 – $11.00		627,750		8.8	$	7.95		136,025
		1,332,323						572,623

The estimated aggregate pretax intrinsic value (the difference between the Company’s stock price on the last day of the year ended December 31, 2015 and the exercises price, multiplied by the number of vested in-the-money options) is approximately $1,136,000. This amount changes based on the fair value of the Company’s stock.

As of December 31, 2015, there was $3,082,439 of unrecognized compensation cost related to non-vested share-based compensation arrangements. That cost is expected to be recognized over a weighted average period of 2.8 years.

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Warrants

12 Months Ended

Dec. 31, 2015

Warrants and Rights Note Disclosure [Abstract]

Warrants Disclosure [Text Block]

Note 11 — Warrants

During the year ended December 31, 2015, warrant holders exercised 127,340 warrants on a cashless basis and received 75,951 shares of common stock and 51,389 shares were used to cover the exercise price. In addition, warrant holders exercised 28,766 warrants and paid the exercise price in cash. The Company received $99,957 in net cash proceeds for the exercise of warrants during 2015.

During the year ended December 31, 2014, warrant holders exercised 94,376 warrants on a cashless basis and received 65,552 shares of common stock and 28,824 shares were used to cover the exercise price. In addition, a warrant holder exercised 1,438 warrants and paid the exercise price in cash. The Company received $4,972 in net cash proceeds for the exercise of warrants during 2014.

In 2013, the Company issued a warrant for the purchase of 84,000 shares of the Company’s common stock for consulting services, with an exercise price of $6.25. The warrant shares vest in increments of 4,000 warrant shares at the end of each month beginning with November 2013 and ending with October 2014 with the remainder vesting in increments of 3,000 warrant shares at the end of each month beginning with November 2014 and ending with October 2015. The warrant was valued at $237,719 using the Black-Scholes option pricing model. For the years ended December 31, 2015 and 2014, the Company recorded $84,900 and $130,179, respectively, in expense related to vested warrant shares.

The shares underlying the warrants have not been registered.

A summary of the Company’s warrant activity and related information is as follows:

	2015				2014
			Weighted				Weighted
			Average Exercise				Average Exercise
	Warrants		Price		Warrants		Price
Outstanding at January 1		1,564,108	$	4.48		1,659,922	$	4.36
Granted		—		—		—		—
Exercised		(156,106)	$	3.72		(95,814)	$	2.27
Forfeited/Expired		—		—		—		—
Outstanding at December 31		1,408,002	$	4.57		1,564,108	$	4.48

No warrants were unvested at December 31, 2015.

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Income Taxes

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Income Tax Disclosure [Text Block]

Note 12 — Income Taxes

Income taxes are disproportionate to income due to net operating loss carryforwards, which are fully reserved. As of December 31, 2015, the Company has federal net operating loss carryforwards of approximately $23 million which will begin to expire in 2031. Management has concluded that it is more likely than not that the Company will not have sufficient foreseeable taxable income within the carryforward period permitted by current law to allow for the utilization of certain of the deductible amounts generating the deferred tax assets; therefore, a full valuation allowance has been established to reduce the net deferred tax assets to zero at December 31, 2015 and 2014.

The following is a summary of the significant components of the Company’s net deferred income tax assets and liabilities as of December 31, 2015 and 2014:

	Year ended December 31,
	2015		2014
Current deferred income tax assets:
Inventory – uniform capitalization	$	75,000	$	13,000
Accrued compensation and other		199,000		151,000
Less: valuation allowance		(274,000)		(164,000)
	$	—	$	—
Non-current deferred income tax assets and (liabilities):
Net operating loss	$	8,029,000	$	4,886,000
Research and development credit		18,000		18,000
Warranty reserve		122,000		49,000
Warrants issued for services		73,000		44,000
Depreciation and amortization		(12,000)		(54,000)
Exercise of options and warrants		(46,000)		—
Stock based compensation		511,000		191,000
Intangibles		(548,000)		(330,000)
Less: valuation allowance		(8,147,000)		(4,804,000)
Net non-current deferred tax assets	$	—	$	—

The Company has applied the provisions of FASB ASC 740, “Income Tax” which clarifies the accounting for uncertainty in tax positions. FASB ASC 740 requires the recognition of the impact of a tax position in the financial statements if that position is more likely than not of being sustained on a tax return upon examination by the relevant taxing authority, based on the technical merits of the position. At December 31, 2015 and 2014, the Company had no unrecognized tax benefits.

The Company recognizes interest and penalties related to income tax matters in interest expense and operating expenses, respectively. As of December 31, 2015 and 2014, the Company has no accrued interest and penalties related to uncertain tax positions.

The Company is subject to tax in the United States (“U.S.”) and files tax returns in the U.S. federal and state jurisdictions. The Company is no longer subject to U.S. federal, state and local income tax examinations by tax authorities for years before 2011. The Company currently is not under examination by any tax authority.

The reconciliation between the statutory income tax rate and the effective tax rate is as follows:

	For the year ended December 31,
	2015			2014
Statutory federal income tax rate		(34)	%		(34)	%
Stock based compensation		(1)			—
Other		2			5
Valuation allowance		33			29
		—	%		—	%

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure [Text Block]

Note 13 — Commitments and Contingencies

Lease

The Company has entered into a lease for 14,782 square feet of office and laboratory space located in Austin, Texas. The triple net lease has a term of 48 months and commenced on June 1, 2014. The annual base rent in the first year of the lease was $154,324 and increases by $3,548 in each succeeding year of the lease. In addition, the Company is required to pay its proportionate share of operating costs for the building. The Company has a one-time option to terminate the lease on May 31, 2017 with a termination payment of approximately $99,000 if it elects to exercise this option.

At December 31, 2015, the remaining annual base rent commitments under the lease, assuming no early termination, are as follows:

For the year ended December 31,	Amount
2016	$	159,941
2017		163,489
2018		68,736
Total	$	392,166

Rent expense incurred for the years ended December 31, 2015 and 2014 amounted to $212,397 and $137,559, respectively.

License Agreement

On July 24, 2015 and December 21, 2015, the Company entered into licensing agreements which expire on February 7, 2033. Per the agreements, the Company has the exclusive royalty-free license which enhances its intellectual property portfolio related to semiconductor power switches. The agreements include both fixed and variable payments. The Company capitalized the $211,394 of fixed payments as an intangible asset and will amortize the asset over the life of the licensing agreements. The variable payments are a function of the number of associated patent filings pending and patents issued under the agreements. The Company will pay $10,000 for each patent filing pending and $20,000 for each patent issued within 20 days of December 21, 2017 and each subsequent year of the agreement, up to a maximum of $100,000 per year (i.e. five issued patents). At December 31, 2015, no patents associated with the agreements had been issued.

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Retirement Plan

12 Months Ended

Dec. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

Note 14 — Retirement Plan

The Company has a defined contribution retirement plan covering all of its employees. Under the plan, the Company contributions are discretionary. No discretionary contributions were made by the Company in the years ended December 31, 2015 and 2014.

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Subsequent Events

12 Months Ended

Dec. 31, 2015

Subsequent Events [Abstract]

Subsequent Events [Text Block]

Note 15 — Subsequent Events

The Company has been notified by legal counsel that a patent was issued on March 2, 2016 under the licensing agreement discussed within Footnote 7 – Intangible Assets and Footnote 13 – Commitment and Contingencies. As per the agreement, if the counterparty does not breach the agreement, the Company will be required to make a payment within 20 days of December 21, 2017 and each subsequent year, through the term of the agreement, in the amount of $20,000.

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Basis of Accounting, Policy [Policy Text Block]

Basis of Presentation

The preparation of financial statements in conformity with US GAAP requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents.

Trade and Other Accounts Receivable, Policy [Policy Text Block]

Accounts Receivable

Trade accounts receivable are stated net of an allowance for doubtful accounts. The Company performs ongoing credit evaluations of its customers’ financial condition. In limited instances, the Company may require an upfront deposit and, in most cases, the Company does charge interest on past due amounts. Management estimates the allowance for doubtful accounts based on review and analysis of specific customer balances that may not be collectible, customer payment history and any other customer-specific information that may impact the evaluation of the specific customer’s credit. Accounts are considered for write-off when they become past due and when it is determined that the probability of collection is remote. The allowance for doubtful accounts was $15,145 and $24,775 at December 31, 2015 and 2014, respectively.

Inventory, Policy [Policy Text Block]

Inventories

Inventories are stated at the lower of cost (first in, first out method) or market value. Inventory quantities on hand are reviewed regularly and a write-down for excess and obsolete inventory is recorded based primarily on an estimated forecast of product demand, market conditions and anticipated production requirements in the near future. There was a $4,274 and $40,703 reserve for excess and obsolete inventory at December 31, 2015 and 2014, respectively, related to component parts not anticipated to have a future use.

Property, Plant and Equipment, Policy [Policy Text Block]

Property and Equipment

Property and equipment are stated at historical cost less accumulated depreciation and amortization. Major additions and improvements are capitalized while maintenance and repairs that do not improve or extend the useful life of the respective asset are expensed. Depreciation and amortization of property and equipment is computed using the straight-line method over their estimated useful lives. Leasehold improvements are amortized over the shorter of the life of the asset or the related leases. Estimated useful lives of the principal classes of assets are as follows:

Leasehold improvements	Shorter of lease term or useful life
Machinery and equipment	5 years
Furniture, fixtures and computers	3 – 5 years

Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]

Intangible Assets

The Company’s intangible assets are primarily composed of patents, which are recorded at cost. The Company capitalizes third party legal costs and filing fees, if any, associated with obtaining patents or other intangible assets. Once the intangible asset has been placed in service, the Company amortizes these costs over the shorter of the asset’s legal life, generally 20 years, or its estimated economic life using the straight-line method.

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

Impairment of Long-Lived Assets

The long-lived assets held and used by the Company are reviewed for impairment no less frequently than annually or whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. In the event that facts and circumstances indicate that the cost of any long-lived assets may be impaired, an evaluation of recoverability is performed. Management has determined that there was an impairment in the value of long-lived assets in the amount of $199,546 during the year ended December 31, 2015. There were no impairments in the value of long-lived assets in the year ended December 31, 2014.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial Instruments

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Assets and liabilities measured at fair value are categorized based on whether or not the inputs are observable in the market and the degree that the inputs are observable. The categorization of financial assets and liabilities within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

The Company’s financial instruments primarily consist of cash and cash equivalents, accounts receivable and accounts payable. As of the balance sheet dates, the estimated fair values of the financial instruments were not materially different from their carrying values as presented on the balance sheets. This is primarily attributed to the short-term maturities of these instruments. The Company did not identify any other non-recurring assets and liabilities that are required to be presented in the balance sheets at fair value.

Revenue Recognition, Policy [Policy Text Block]

Revenue Recognition

Revenue from product sales is recognized when the risks of loss and title pass to the customer, as specified in (1) the respective sales agreements and (2) other revenue recognition criteria as prescribed by Staff Accounting Bulletin (“SAB”) No. 101 (SAB 101), “Revenue Recognition in Financial Statements,” as amended by SAB No. 104, “Revenue Recognition”. The Company generally sells its products FOB shipping and recognizes revenue when products are shipped.

In prior years, the Company received payments from government entities in the form of government grants. Government grants are agreements that generally provide the Company with cost reimbursement for certain types of research and development activities over a contractually defined period. Revenues from government grants are recognized in the period during which the Company incurs the related costs, provided that the Company has incurred the cost in accordance with the specifications and work plans determined between the Company and the government entity. Costs incurred related to the grants are recorded as grant research and development costs. At December 31, 2014, the Company had recognized all grant revenues related to the ARPA-E grant and no grant revenue was recognized in the year ended December 31, 2015. Grant receivables were $132,227 at December 31, 2014 and were included in accounts receivable.

Standard Product Warranty, Policy [Policy Text Block]

Product Warranties

The Company generally provides a ten year limited warranty on its products. Accruals for product warranties are estimated based upon limited historical warranty experience, engineering experience and judgment, and third party assessments of the reliability of the Company’s 30kW products. Accruals for product warranties are recorded in cost of revenues at the time revenue is recognized in order to match revenues with related expenses. The Company assesses the adequacy of its estimated warranty liability quarterly and adjusts the reserve, included in accrued expenses, as necessary. Although any such adjustments were not material in the years ended December 31, 2015 and 2014, any such adjustments could be material in the future if estimates differ significantly from actual warranty experience.

Research and Development Expense, Policy [Policy Text Block]

Research and Development

Grant research and development are costs incurred solely related to grant revenues, and are classified as a line item under cost of revenues.

Other research and development costs are presented as a line item under operating expenses and are expensed as incurred. Total research and development costs incurred during the years ended December 31, 2015 and 2014 amounted to $5,521,390 and $2,983,648, respectively, of which $643,421 was included in cost of revenues in the year ended December 31, 2014.

Income Tax, Policy [Policy Text Block]

Income Taxes

The Company accounts for income taxes using an asset and liability approach which allows for the recognition and measurement of deferred tax assets based upon the likelihood of realization of tax benefits in future years. Under the asset and liability approach, deferred taxes are provided for the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. A valuation allowance is provided for deferred tax assets if it is more likely than not these items will either expire before the Company is able to realize their benefits, or that future deductibility is uncertain. At December 31, 2015 and 2014, the Company has established a full reserve against all deferred tax assets.

Tax benefits from an uncertain tax position are recognized only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities based on the technical merits of the position. The tax benefits recognized in the financial statements from such a position are measured based on the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate resolution.

Earnings Per Share, Policy [Policy Text Block]

Net Loss Per Share

The Company applies Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 260, “Earnings per Share.” Basic earnings (loss) per share is computed by dividing earnings (loss) available to common stockholders by the weighted-average number of common shares outstanding. Diluted earnings (loss) per share is computed similar to basic earnings (loss) per share except that the denominator is increased to include additional common shares available upon exercise of stock options and warrants using the treasury stock method. In periods with a net loss, no common share equivalents are included because their effect would be anti-dilutive. At December 31, 2015 and 2014, potentially dilutive shares outstanding amounted to 2,846,325 and 2,932,155, respectively.

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

Stock Based Compensation

The Company applies FASB ASC 718, “Stock Compensation,” when recording stock based compensation. The fair value of each stock option award is estimated on the date of grant using the Black-Scholes option valuation model.

The Company uses a Monte Carlo simulation pricing model to determine the fair value of performance stock units (“PSUs”). A typical Monte Carlo exercise simulates a distribution of stock prices to yield an expected distribution of stock prices during and at the end of the performance period. The simulations are repeated many times in order to derive a probabilistic assessment of stock performance. The stock-paths are simulated using assumptions which include expected stock price volatility and risk-free interest rate.

The Company accounts for stock issued to non-employees in accordance with the provisions of FASB ASC 505-50 “Equity Based Payments to Non-Employees.” FASB ASC 505-50 states that equity instruments that are issued in exchange for the receipt of goods or services should be measured at the fair value of the consideration received or the fair value of the equity instruments issued, whichever is more reliably measurable. The measurement date occurs as of the earlier of (a) the date at which a performance commitment is reached or (b) absent a performance commitment, the date at which the performance necessary to earn the equity instruments is complete (that is, the vesting date).

The Company issues common stock upon exercise of equity awards and warrants.

Presentation of Sales Taxes Policy [Policy Text Block]

Presentation of Sales Taxes

Certain states impose a sales tax on the Company’s sales to nonexempt customers. The Company collects that sales tax from customers and remits the entire amount to the states. The Company’s accounting policy is to exclude the tax collected and remitted to the states from revenues and cost of revenues.

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains its cash with a major financial institution located in the United States. Balances are insured by the Federal Deposit Insurance Corporation up to $250,000. The Company maintains balances in excess of federally insured limits. The Company has not experienced losses in such accounts and believes it is not exposed to significant credit risk regarding its cash and cash equivalents.

The Company encounters a certain amount of risk as a result of a concentration of revenue from a few significant customers. Credit is extended to customers based on an evaluation of their financial condition. In limited instances, the Company may require an upfront deposit and, in most cases, the Company does charge interest on past due amounts. The Company performs ongoing credit evaluations of its customers and records an allowance for potential bad debts based on available information.

The Company had revenue from four customers that accounted for 66% of net revenue for the year ended December 31, 2015, and from a government entity and three customers that accounted for 76% of net revenue for the year ended December 31, 2014. The Company had an accounts receivable balance from three customers that accounted for 66% of trade receivables at December 31, 2015, and three customers that accounted for 92% of trade receivables at December 31, 2014.

Reclassification, Policy [Policy Text Block]

Reclassifications

Certain items in prior financial statements have been reclassified to conform to current year presentation. These changes did not impact total revenue, loss from operations or net loss.

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers. ASU 2014-09 will require that companies recognize revenue based on the value of transferred goods or services as they occur in the contract. ASU 2014-09 also will require additional disclosure about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments and assets recognized from costs incurred to obtain or fulfill a contract. Based on the FASB’s Exposure Draft Update approved in July 2015, Revenue from Contracts With Customers (Topic 606): Deferral of the Effective Date, ASU 2014-09 is now effective for reporting periods beginning after December 15, 2017, with early adoption permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. Entities will be able to transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. The adoption of ASU 2014-09 is not expected to have any impact on the Company’s financial statement presentation or disclosures.

In August 2014, the FASB issued Accounting Standards Update No. 2014-15 (ASU 2014-15), Presentation of Financial Statements – Going Concern (Subtopic 205-10). ASU 2014-15 provides guidance as to management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). ASU 2014-15 is effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of ASU 2014-15 is not expected to have any impact on the Company’s financial statement presentation or disclosures.

In November 2015, the FASB issued Accounting Standards Update No. 2015-17 (ASU 2015-17), Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes. ASU 2015-17 require that deferred tax liabilities and assets be classified as noncurrent in a classified statement of financial position. ASU 2015-17 is effective for financial statements issued for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Earlier application is permitted as of the beginning of an interim or annual reporting period. The adoption of ASU 2015-17 is not expected to have an impact the Company’s financial statement presentation or disclosures.

Management does not believe that any other recently issued, but not yet effective, accounting standards, if adopted, will have a material effect on the financial statements.

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Property, Plant and Equipment, Estimated Useful Lives [Table Text Block]

Estimated useful lives of the principal classes of assets are as follows:

Leasehold improvements	Shorter of lease term or useful life
Machinery and equipment	5 years
Furniture, fixtures and computers	3 – 5 years

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Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2015

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts receivable, net consisted of the following:

	December 31,
	2015		2014
Trade receivables	$	803,599	$	231,412
Grant receivables		—		132,227
Other receivables		84,420		107,657
		888,019		471,296
Allowance for doubtful accounts		(15,145)		(24,775)
	$	872,874	$	446,521

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Inventories (Tables)

12 Months Ended

Dec. 31, 2015

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories, net consisted of the following:

	December 31,
	2015		2014
Raw materials	$	124,498	$	143,289
Finished goods		527,785		148,752
		652,283		292,041
Reserve for obsolescence		(4,274)		(40,703)
	$	648,009	$	251,338

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Prepayments and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2015

Prepaid Expense and Other Assets, Current [Abstract]

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

Prepayments and other current assets consisted of the following:

	December 31,
	2015		2014
Prepaid insurance	$	168,481	$	158,400
Prepaid software		59,874		4,557
Other		68,000		100,648
	$	296,355	$	263,605

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Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property and equipment, net consisted of the following:

	December 31,
	2015		2014
Machinery and equipment	$	676,881	$	263,142
Building leasehold improvements		362,300		48,280
Furniture, fixtures, software and computers		195,497		183,237
		1,234,678		494,659
Accumulated depreciation and amortization		(308,779)		(120,283)
	$	925,899	$	374,376

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Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Intangible assets, net consisted of the following:

	December 31,
	2015		2014
Patents	$	1,313,269	$	1,040,219
Other intangible assets		211,394		—
		1,524,663		1,040,219
Accumulated amortization		(57,852)		(27,255)
	$	1,466,811	$	1,012,964

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Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2015

Accounts Payable and Accrued Liabilities, Current [Abstract]

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses consisted of the following:

	December 31,
	2015		2014
Accrued compensation	$	616,029	$	548,953
Warranty reserve		358,296		143,364
Other		265,768		80,802
	$	1,240,093	$	773,119

Schedule of Product Warranty Liability [Table Text Block]

The changes in warranty reserve were as follows:

	2015		2014
Balance, beginning of the year	$	143,364	$	113,078
Provisions for warranty and beta replacements		235,377		76,671
Warranty payments or beta replacements		(20,445)		(46,385)
Balance, end of the year	$	358,296	$	143,364

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Stock Option Plan (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The assumptions used in the Black-Scholes model are as follows:

	For the year ended December 31,
	2015			2014
Risk-free interest rate		1.54% to 1.95	%		1.78 to 2.19	%
Expected dividend yield		0	%		0	%
Expected life		5.31 to 6.25 years			5.31 to 6.25 years
Expected volatility		60	%		60	%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of the Company’s stock option activity and related information is as follows:

	2015						2014
					Weighted						Weighted
			Weighted		Average				Weighted		Average
			Average		Remaining				Average		Remaining
			Exercise		Life				Exercise		Life
	Stock Options		Price		(in years)		Stock Options		Price		(in years)
Outstanding at January 1		1,368,047	$	6.41		8.7		485,573	$	4.24		8.2
Granted		221,102	$	7.80				899,526	$	7.49
Exercised		(201,389)	$	4.47				(10,500)	$	0.10
Forfeited/Expired/Exchanged		(55,437)	$	6.13				(6,552)	$	4.53
Outstanding at December 31		1,332,323	$	6.94		8.4		1,368,047	$	6.41		8.7
Exercisable at December 31		572,623	$	6.02		7.8		467,204	$	4.65		7.3

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The following table sets forth additional information about stock options outstanding at December 31, 2015:

			Weighted Average
	Options		Remaining Life		Weighted Average		Options
Range of Exercise Prices	Outstanding		(in years)		Exercise Price		Exercisable
$0.41 – $5.00		226,645		6.8	$	4.05		208,395
$5.01 – $7.50		477,928		8.5	$	7.00		228,203
$7.51 – $11.00		627,750		8.8	$	7.95		136,025
		1,332,323						572,623

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Warrants (Tables)

12 Months Ended

Dec. 31, 2015

Warrants and Rights Note Disclosure [Abstract]

Share Based Compensation Warrant Activity [Table Text Block]

A summary of the Company’s warrant activity and related information is as follows:

	2015				2014
			Weighted				Weighted
			Average Exercise				Average Exercise
	Warrants		Price		Warrants		Price
Outstanding at January 1		1,564,108	$	4.48		1,659,922	$	4.36
Granted		—		—		—		—
Exercised		(156,106)	$	3.72		(95,814)	$	2.27
Forfeited/Expired		—		—		—		—
Outstanding at December 31		1,408,002	$	4.57		1,564,108	$	4.48

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The following is a summary of the significant components of the Company’s net deferred income tax assets and liabilities as of December 31, 2015 and 2014:

	Year ended December 31,
	2015		2014
Current deferred income tax assets:
Inventory – uniform capitalization	$	75,000	$	13,000
Accrued compensation and other		199,000		151,000
Less: valuation allowance		(274,000)		(164,000)
	$	—	$	—
Non-current deferred income tax assets and (liabilities):
Net operating loss	$	8,029,000	$	4,886,000
Research and development credit		18,000		18,000
Warranty reserve		122,000		49,000
Warrants issued for services		73,000		44,000
Depreciation and amortization		(12,000)		(54,000)
Exercise of options and warrants		(46,000)		—
Stock based compensation		511,000		191,000
Intangibles		(548,000)		(330,000)
Less: valuation allowance		(8,147,000)		(4,804,000)
Net non-current deferred tax assets	$	—	$	—

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The reconciliation between the statutory income tax rate and the effective tax rate is as follows:

	For the year ended December 31,
	2015			2014
Statutory federal income tax rate		(34)	%		(34)	%
Stock based compensation		(1)			—
Other		2			5
Valuation allowance		33			29
		—	%		—	%

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Other Commitments [Table Text Block]

At December 31, 2015, the remaining annual base rent commitments under the lease, assuming no early termination, are as follows:

For the year ended December 31,	Amount
2016	$	159,941
2017		163,489
2018		68,736
Total	$	392,166

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Organization and Description of Business (Details Textual)	12 Months Ended
	Dec. 31, 2015
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Entity Incorporation, State Country Name	Delaware
Entity Incorporation, Date of Incorporation	Jul. 15, 2013

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Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2015
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	Shorter of lease term or useful life
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5 years
Furniture, fixtures, software and computers [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	3 years
Furniture, fixtures, software and computers [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	5 years

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Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Depreciation Methods	straight-line method
Revenue from Grants	$ 0	$ 579,079
Grants Receivable, Current	0	132,227
Research And Development Expense Including Grants	643,421
Cash, FDIC Insured Amount	250,000
Inventory Valuation Reserves	$ 4,274	$ 40,703
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,846,325	2,932,155
Previously Estimated Development Costs Incurred	$ 5,521,390	$ 2,983,648
Asset Impairment Charges, Total	199,546
Allowance for Doubtful Accounts Receivable	$ 24,775	$ 15,145
Sales Revenue, Net [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	66.00%	76.00%
Trade Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	66.00%	92.00%
Patents [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Method	straight-line method
Finite-Lived Intangible Asset, Useful Life	20 years

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Accounts Receivable (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade receivables	$ 803,599	$ 231,412
Grant receivables	0	132,227
Other receivables	84,420	107,657
Accounts Receivable, Gross, Current	888,019	471,296
Allowance for doubtful accounts	(15,145)	(24,775)
Accounts Receivable, Net, Current	$ 872,874	$ 446,521

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Inventories (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Inventory [Line Items]
Raw materials	$ 124,498	$ 143,289
Finished goods	527,785	148,752
Inventory, Gross	652,283	292,041
Reserve for obsolescence	(4,274)	(40,703)
Inventory, Net, Total	$ 648,009	$ 251,338

XML

Prepayments and Other Current Assets (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Prepayment And Other Current Assets [Line Items]
Prepaid insurance	$ 168,481	$ 158,400
Prepaid software	59,874	4,557
Other	68,000	100,648
Prepaid Expense and Other Assets, Current	$ 296,355	$ 263,605

XML

Property and Equipment (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Machinery and equipment	$ 676,881	$ 263,142
Building leasehold improvements	362,300	48,280
Furniture, fixtures, software and computers	195,497	183,237
Property and equipment, gross	1,234,678	494,659
Accumulated depreciation and amortization	(308,779)	(120,283)
Property and equipment, net	$ 925,899	$ 374,376

XML

Intangible Assets (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Patents	$ 1,313,269	$ 1,040,219
Other intangible assets	211,394	0
Finite-Lived Intangible Assets, Gross	1,524,663	1,040,219
Accumulated amortization	(57,852)	(27,255)
Finite-Lived Intangible Assets, net	$ 1,466,811	$ 1,012,964

XML

Intangible Assets (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Jul. 24, 2015	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Licensing Agreements Expiration Date		February 7, 2033
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired	$ 211,394	$ 211,394
Finite-Lived Intangible Asset, Useful Life		17 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets		$ 30,597	$ 14,204
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		47,277
Finite-Lived Intangible Assets, Amortization Expense, Year Two		47,277
Finite-Lived Intangible Assets, Amortization Expense, Year Three		47,277
Finite-Lived Intangible Assets, Amortization Expense, Year Four		47,277
Finite-Lived Intangible Assets, Amortization Expense, Year Five		47,277
Finite-Lived Intangible Assets, Amortization Expense, after Year Five		618,520
Finite lived Intangible Assets Patents Capitalized But Not Yet Awarded		$ 612,000	$ 746,000
Finite-Lived Intangible Asset, Useful Life		20 years

XML

Accrued Expenses (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Accrued Expenses [Line Items]
Accrued compensation	$ 616,029	$ 548,953
Warranty reserve	358,296	143,364	$ 113,078
Other	265,768	80,802
Accrued Liabilities, Current	$ 1,240,093	$ 773,119

XML

Accrued Expenses (Details 1) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Schedule of Accrued Expenses [Line Items]
Balance, beginning of the year	$ 143,364	$ 113,078
Provisions for warranty and beta replacements	235,377	76,671
Warranty payments or beta replacements	(20,445)	(46,385)
Balance, end of the year	$ 358,296	$ 143,364

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Common Stock (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	May. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Common Stock, Par or Stated Value Per Share		$ 0.001	$ 0.001
Payments of Stock Issuance Costs		$ 1,325,739
Stock Issued During Period, Value, Stock Options Exercised		653,828	$ 4,966
Stock Issued During Period, Value, New Issues	$ 58,000,000	15,924,405
Stock Issued During Period, Value, Issued for Services			50,004
Shares Authorized, Value			75,000,000
Gross Proceeds From Issuance Of Common Stock		17,250,144
Proceeds from Issuance of Common Stock		$ 15,924,405	$ 0
Number of warrants issued to Purchase Common stock		265,484
Value of warrants issued to Purchase Common stock		$ 653,828
IPO [Member]
Stock Issued During Period, Shares, New Issues		2,225,825
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		201,389	10,500
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total		10,000
Underwriters [Member]
Stock Issued During Period, Shares, New Issues		290,325
Common Stock Issuable [Member]
Stock Issued During Period, Value, New Issues			$ 201,669
Stock Issued During Period, Value, Issued for Services				$ 151,665
Stock Issued During Period, Shares, Issued for Services			32,525
Common Stock [Member]
Common Stock, Par or Stated Value Per Share		$ 0.001
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		265,484	77,364
Stock Issued During Period, Value, Stock Options Exercised		$ 266	$ 77
Stock Issued During Period, Value, New Issues		$ 2,226
Stock Issued During Period, Shares, New Issues		2,225,825
Stock Issued During Period, Value, Issued for Services			$ 39
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total		10,000
Stock Issued During Period, Shares, Issued for Services			38,903
Underwriting Discount [Member]
Payments of Stock Issuance Costs		$ 1,035,008
Other Cost [Member]
Payments of Stock Issuance Costs		$ 290,731

XML

Stock Option Plan (Details) - Employee Stock Option [Member]	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate, Minimum	1.54%	1.78%
Risk-free interest rate, Maximum	1.95%	2.19%
Expected dividend yield	0.00%	0.00%
Expected volatility	60.00%	60.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	5 years 3 months 22 days	5 years 3 months 22 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life	6 years 3 months	6 years 3 months

XML

Stock Option Plan (Details 1) - Employee Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1	1,368,047	485,573
Stock Options, Granted	221,102	899,526
Stock Options, Exercised	(201,389)	(10,500)
Stock Options, Forfeited/Expired/Exchanged	(55,437)	(6,552)
Outstanding at December 31	1,332,323	1,368,047	485,573
Stock Options, Exercisable at December 31	572,623	467,204
Outstanding at January 1	$ 6.41	$ 4.24
Weighted Average Exercise Price, Granted (in dollars per share)	7.80	7.49
Weighted Average Exercise Price, Exercised (in dollars per share)	4.47	0.10
Weighted Average Exercise Price, Forfeited/Expired/Exchanged (in dollars per share)	6.13	4.53
Outstanding at December 31	6.94	6.41	$ 4.24
Weighted Average Exercise Price, Exercisable at December 31 (in dollars per share)	$ 6.02	$ 4.65
Weighted Average Remaining Life, Outstanding (in years)	8 years 4 months 24 days	8 years 8 months 12 days	8 years 2 months 12 days
Weighted Average Remaining Life, Exercisable at December 31 (in years)	7 years 9 months 18 days	7 years 3 months 18 days

XML

Stock Option Plan (Details 2) - Employee Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding	1,332,323	1,368,047	485,573
Weighted Average Remaining Life (in years)	8 years 4 months 24 days	8 years 8 months 12 days	8 years 2 months 12 days
Weighted Average Exercise Price	$ 6.94	$ 6.41	$ 4.24
Options Exercisable	572,623	467,204
Exercise Price Range $0.41 - $5.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit	$ 0.41
Range of Exercise Prices, Upper Range Limit	$ 5.00
Options Outstanding	226,645
Weighted Average Remaining Life (in years)	6 years 9 months 18 days
Weighted Average Exercise Price	$ 4.05
Options Exercisable	208,395
Exercise Price Range $5.01 - $7.50 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit	$ 5.01
Range of Exercise Prices, Upper Range Limit	$ 7.50
Options Outstanding	477,928
Weighted Average Remaining Life (in years)	8 years 6 months
Weighted Average Exercise Price	$ 7.00
Options Exercisable	228,203
Exercise Price Range $7.51 - $11.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Lower Range Limit	$ 7.51
Range of Exercise Prices, Upper Range Limit	$ 11.00
Options Outstanding	627,750
Weighted Average Remaining Life (in years)	8 years 9 months 18 days
Weighted Average Exercise Price	$ 7.95
Options Exercisable	136,025

XML

Stock Option Plan (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	May. 26, 2015	Dec. 31, 2015	Dec. 31, 2014	May. 17, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value		$ 1,136,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options		$ 3,082,439
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 years 9 months 18 days
Stock Issued During Period, Value, Stock Options Exercised		$ 653,828	$ 4,966
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total		0
Restricted Stock or Unit Expense		$ 7,284
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		265,484	77,364
Stock Issued During Period, Value, Stock Options Exercised		$ 266	$ 77
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total		10,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total		$ 10
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		221,102	899,526
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		201,389	10,500
Proceeds from Stock Options Exercised		$ 553,871
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total		10,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total		$ 77,700
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		60.00%	60.00%
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		96,000
Share Based Compensation Arrangement By Share Based Payment Award Grant Date Fair Value		405,997
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 4.23
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		60.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate		1.30%
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost, Total		$ 31,014
Performance Share Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price		$ 15
Performance Share Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price		$ 9
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance		10,000
Equity Incentive 2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement By Share-based Payment Award Plan Modification Number Of Shares Authorized				839,983
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		831,615
Equity Incentive 2013 Plan [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		90,609
Stock Issued During Period, Value, Stock Options Exercised		$ 110,780
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		49,987
Equity Incentive 2013 Plan [Member] | Used to Cover Exercise Price [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		40,622
Equity Incentive 2013 Plan [Member] | Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		182,600
Allocated Share-based Compensation Expense		$ 231,395
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights		The options granted to employees vest in equal annual installments over 4 years while the options granted to directors vested in equal quarterly installments in 2015
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Fair Value		$ 974,329
Equity Incentive 2013 Plan [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		38,502
Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	1,250,000

XML

Warrants (Details) - Warrant [Member] - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1	1,564,108	1,659,922
Warrants, Granted	0	0
Warrants, Exercised	(156,106)	(95,814)
Warrants, Forfeited/Expired	0	0
Outstanding at December 31	1,408,002	1,564,108
Outstanding at January 1	$ 4.48	$ 4.36
Weighted Average Exercise Price, Granted (in dollars per share)	0	0
Weighted Average Exercise Price, Exercised (in dollars per share)	3.72	2.27
Weighted Average Exercise Price, Forfeited/Expired/Exchanged (in dollars per share)	0	0
Outstanding at December 31	$ 4.57	$ 4.48

XML

Warrants (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Warrant [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	156,106	95,814
Common Stock [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	265,484	77,364
Warrants Issued For Promissory Note Holders [Member] | Warrant [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	127,340	94,376
Proceeds from Warrant Exercises	$ 99,957	$ 4,972
Warrants Issued For Promissory Note Holders [Member] | Used to Cover Exercise Price [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	51,389	28,824
Warrants Issued For Promissory Note Holders [Member] | Cashless Basis Exercise [Member] | Common Stock [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	75,951	65,552
Warrants Issued For Promissory Note Holders [Member] | Cash Basis Exercise [Member] | Common Stock [Member]
Class of Warrant or Right [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	28,766	1,438
Warrants Issued For Consulting Services [Member]
Class of Warrant or Right [Line Items]
Warrants To Purchase Common stock			84,000
Warrants, Exercise Price			$ 6.25
Warrants Issued During Period, Fair Value			$ 237,719
Warrants, Interest Expense	$ 84,900	$ 130,179
Warrants Issued For Consulting Services [Member] | Beginning With November 2013 [Member]
Class of Warrant or Right [Line Items]
Incremental Warrants Vesting, Number			4,000
Warrants Issued For Consulting Services [Member] | Beginning With November 2014 [Member]
Class of Warrant or Right [Line Items]
Incremental Warrants Vesting, Number			3,000

XML

Income Taxes (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Current deferred income tax assets:
Inventory - uniform capitalization	$ 75,000	$ 13,000
Accrued compensation and other	199,000	151,000
Less: valuation allowance	(274,000)	(164,000)
Deferred Tax Assets, Net of Valuation Allowance, Current	0	0
Non-current deferred income tax assets and (liabilities):
Net operating loss	8,029,000	4,886,000
Research and development credit	18,000	18,000
Warranty reserve	122,000	49,000
Warrants issued for services	73,000	44,000
Depreciation and amortization	(12,000)	(54,000)
Exercise of options and warrants	(46,000)	0
Stock based compensation	511,000	191,000
Intangibles	(548,000)	(330,000)
Less: valuation allowance	(8,147,000)	(4,804,000)
Net non-current deferred tax assets	$ 0	$ 0

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Income Taxes (Details 1)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Statutory federal income tax rate	(34.00%)	(34.00%)
Stock based compensation	(1.00%)	0.00%
Other	2.00%	5.00%
Valuation allowance	33.00%	29.00%
Effective Income Tax Rate Reconciliation, Percent	0.00%	0.00%

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Income Taxes (Details Textual)	12 Months Ended
	Dec. 31, 2015
Income Taxes [Line Items]
Operating Loss Carryforwards, Limitations on Use	the Company has federal net operating loss carryforwards of approximately $23 million which will begin to expire in 2031

XML

Commitments and Contingencies (Details)	Dec. 31, 2015 USD ($)
Year Ended December 31,
2016	$ 159,941
2017	163,489
2018	68,736
Total	$ 392,166

XML

Commitments and Contingencies (Details Textual)	1 Months Ended			12 Months Ended
	Dec. 31, 2017 USD ($)	Dec. 21, 2017 USD ($)	Jul. 24, 2015 USD ($)	Dec. 31, 2015 USD ($) ft²	Dec. 31, 2014 USD ($)
Other Commitments [Line Items]
Operating Leases, Rent Expense				$ 212,397	$ 137,559
Lease Expiration Date				May 31, 2017
Payments to Acquire Intangible Assets				$ 630,136	$ 418,255
Licensing Agreements [Member]
Other Commitments [Line Items]
Acquisition Costs, Period Cost			$ 211,394
Licensing Agreements [Member] | Patents [Member] | Scenario, Forecast [Member]
Other Commitments [Line Items]
Payments to Acquire Intangible Assets		$ 20,000
Payable To Intangible Assets		$ 10,000
Licensing Agreements [Member] | Patents [Member] | Maximum [Member] | Scenario, Forecast [Member]
Other Commitments [Line Items]
Payments to Acquire Intangible Assets	$ 100,000
Office And Laboratory Space [Member]
Other Commitments [Line Items]
Operating Leases, Lease Space | ft²				14,782
Lessee Leasing Arrangements, Operating Leases, Term of Contract				48 months
Operating Leases, Future Minimum Payments Due, Next Twelve Months				$ 154,324
Operating Leases, Increases In Base Rent, Amount				3,548
Operating Leases, Termination Payment				$ 99,000

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Retirement Plan (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 0	$ 0

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Subsequent Events (Details Textual) - USD ($)	1 Months Ended	12 Months Ended
	Dec. 21, 2017	Dec. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Payments to Acquire Intangible Assets		$ 630,136	$ 418,255
Patents [Member] | Scenario, Forecast [Member] | Licensing Agreements [Member]
Subsequent Event [Line Items]
Payments to Acquire Intangible Assets	$ 20,000