10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2023

or

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from _______ to _______

Commission file number: 001-40284

SOLID POWER, INC.

(Exact name of registrant as specified in its charter)

Delaware	86-1888095
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification No.)
486 S. Pierce Ave., Suite E
Louisville, Colorado	80027
(Address of principal executive offices)	(Zip Code)

(303) 219-0720

(Registrant’s telephone number, including area code)

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

Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common stock, par value $0.0001 per share	SLDP	The Nasdaq Stock Market LLC
Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50	SLDPW	The Nasdaq Stock Market LLC

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 ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒	Accelerated filer ☐	Non-accelerated filer ☐	Smaller reporting company ☐
			Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

177,829,714 shares of common stock were issued and outstanding as of May 8, 2023.

SOLID POWER, INC.

FORM 10-Q

Table of Contents

PART I. FINANCIAL INFORMATION
Item 1.	Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	17
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	21
Item 4.	Controls and Procedures	21
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	22
Item 1A.	Risk Factors	22
Item 6.	Exhibits	23
Signatures		24

1

GLOSSARY OF DEFINED TERMS

Term	Definition
Ah	Ampere hour
BMW	BMW of North America LLC
Board	The Board of Directors of Solid Power, Inc.
DCRC	Decarbonization Plus Acquisition Corporation III
EV	Battery electric vehicle
EV cells	Prototype cell formats between 60 and 100 Ah
EV line	Our pilot cell production line that is capable of producing cells between 60 and 100 Ah.
Exchange Act	Securities Exchange Act of 1934, as amended
JDA	Joint Development Agreement
OEM	Automotive original equipment manufacturers
Report	This Quarterly Report on Form 10-Q
SEC	Securities and Exchange Commission
Solid Power / the Company / we / us / our	Solid Power, Inc., a Delaware corporation (f/k/a Decarbonization Plus Acquisition Corporation III)

2

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q (this “Report”) of Solid Power, Inc. (f/k/a Decarbonization Plus Acquisition Corporation III, “Solid Power,” the “Company,” “we,” “us,” or “our”) contains forward-looking statements, within the meaning of the Private Securities Litigation Reform Act of 1995, that involve risks and uncertainties. We have based these forward-looking statements on our current expectations and projections about future events. All statements, other than statements of present or historical fact included in this Report, regarding our future financial performance and our strategy, expansion plans, market opportunity, future operations, future operating results, estimated revenues, losses, projected costs, prospects, plans and objectives of management are forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may,” “should,” “could,” “would,” “will,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “continue,” “project” or the negative of such terms or other similar expressions. These forward-looking statements are subject to known and unknown risks, uncertainties and assumptions about us that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Except as otherwise required by applicable law, we disclaim any duty to update any forward-looking statements, all of which are expressly qualified by the statements in this section, to reflect events or circumstances after the date of this Report. We caution you that the forward-looking statements contained herein are subject to numerous risks and uncertainties, most of which are difficult to predict and many of which are beyond our control.

In addition, we caution you that the forward-looking statements regarding the Company contained in this Report are subject to the following factors:

● risks relating to the uncertainty of the success of our research and development efforts, including our ability to achieve the technological objectives or results that our partners require, and to commercialize our technology in advance of competing technologies;

● risks relating to the non-exclusive nature of our original equipment manufacturers and joint development agreement relationships;

● our ability to negotiate and execute supply agreements with our partners on commercially reasonable terms;

● our ability to protect our intellectual property, including in jurisdictions outside of the United States;

● broad market adoption of EVs and other technologies where we are able to deploy our cell technology and electrolyte material, if developed successfully;

● our success in retaining or recruiting, or changes required in, our officers, key employees, including technicians and engineers, or directors;

● risks and potential disruptions related to management transitions;

● changes in applicable laws or regulations;

● risks related to technology systems and security breaches;

● the possibility that we may be adversely affected by other economic, business or competitive factors, including supply chain interruptions, and may not be able to manage other risks and uncertainties;

● risks relating to our status as a research and development stage company with a history of financial losses, and an expectation to incur significant expenses and continuing losses for the foreseeable future;

● rollout of our business plan and the timing of expected business milestones;

● the termination or reduction of government clean energy and electric vehicle incentives;

● delays in the construction and operation of production facilities;

3

● changes in domestic and foreign business, market, financial, political and legal conditions; and

● those factors discussed in “Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2022.

We caution you that the foregoing list does not contain all of the risks or uncertainties that could affect the Company.

You should not rely upon forward-looking statements as predictions of future events. We have based the forward-looking statements contained in this Report primarily on our current expectations and projections about future events and trends that we believe may affect our business, operating results, financial condition and prospects. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties and other factors, including those described in “Part I, Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2022. Moreover, we operate in a very competitive and rapidly changing environment. New risks and uncertainties emerge from time to time and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this Report. We cannot assure you that the results, events and circumstances reflected in the forward-looking statements will be achieved or occur, and actual results, events or circumstances could differ materially from those described in the forward-looking statements.

Neither we nor any other person assumes responsibility for the accuracy and completeness of any of these forward-looking statements. Moreover, the forward-looking statements made in this Report relate only to events as of the date on which the statements are made. We undertake no obligation to update any forward-looking statements made in this Report to reflect events or circumstances after the date of this Report or to reflect new information or the occurrence of unanticipated events, except as required by law. You should not place undue reliance on our forward-looking statements. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures or investments we may make.

TRADEMARKS

Our logo and trademark appearing in this Report and the documents incorporated by reference herein are our property. This document and the documents incorporated by reference herein contains references to trademarks and service marks belonging to other entities. Solely for convenience, trademarks and trade names referred to in this Report may appear without the ® or TM symbols, but such references are not intended to indicate, in any way, that the applicable licensor will not assert, to the fullest extent under applicable law, its rights to these trademarks and trade names. We do not intend our use or display of other companies’ trade names, trademarks or service marks to imply a relationship with, or endorsement or sponsorship of it by, any other companies.

MARKET AND INDUSTRY DATA

We obtained the industry and market data used throughout this Report or any documents incorporated herein by reference from our own internal estimates and research, as well as from independent market research, industry and general publications and surveys, governmental agencies, publicly available information and research, surveys and studies conducted by third parties. Internal estimates are derived from publicly available information released by industry analysts and third-party sources, our internal research and our industry experience, and are based on assumptions made by us based on such data and our knowledge of our industry and market, which we believe to be reasonable. In some cases, we do not expressly refer to the sources from which this data is derived. In addition, while we believe the industry and market data included in this Report or any documents incorporated herein by reference is reliable and based on reasonable assumptions, such data involve material risks and other uncertainties and is subject to change based on various factors, including those discussed in the section entitled “Risk Factors.” These and other factors could cause results to differ materially from those expressed in the estimates made by the independent parties or by us.

4

INFORMATION ABOUT SOLID POWER

We use our website (www.solidpowerbattery.com) and various social media channels as a means of disclosing information about Solid Power and our products to our customers, investors and the public (e.g., @SolidPowerInc on Twitter, Solid Power Inc. on LinkedIn, and Solid Power on YouTube). The information posted on our website and social media channels is not incorporated by reference in this Report or in any other report or document we file with the SEC. Further, references to our website URLs are intended to be inactive textual references only. The information we post through these channels may be deemed material. Accordingly, investors should monitor these channels, in addition to following our press releases, SEC filings, and public conference calls and webcasts. In addition, you may automatically receive e-mail alerts and other information about Solid Power when you enroll your e-mail address by visiting the “Investor Email Alerts” section of our website at https://ir.solidpowerbattery.com. Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and amendments to reports filed pursuant to Sections 13(a) and 15(d) of the Exchange Act, are filed with the SEC. These reports and other information we file with the SEC are available free of charge at https://ir.solidpowerbattery.com/financial-information/sec-filings when such reports are available on the SEC’s website.

5

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

Solid Power, Inc.

Condensed Consolidated Balance Sheets

(in thousands, except par value and number of shares)

	March 31, 2023
	(Unaudited)		December 31, 2022
Assets
Current Assets
Cash and cash equivalents	$	9,888	$	50,123
Marketable securities		245,563		272,957
Contract receivables		1,700		1,840
Prepaid expenses and other current assets		4,219		2,888
Total current assets		261,370		327,808
Property, Plant and Equipment, net		87,891		82,761
Right-Of-Use Operating Lease Asset, net		7,586		7,725
Right-Of-Use Financing Lease Asset, net		896		922
Other Assets		1,099		1,148
Long-term Investments		212,785		172,974
Intangible Assets, net		1,229		1,108
Total assets	$	572,856	$	594,446
Liabilities and Stockholders’ Equity
Current Liabilities
Accounts payable	$	3,577	$	10,070
Current portion of long-term debt		—		7
Deferred revenue		1,036		4,050
Accrued and other current liabilities:
Accrued compensation		2,023		4,528
Other accrued liabilities		5,104		1,256
Operating lease liabilities, short-term		567		549
Financing lease liability, short-term		276		273
Total current liabilities		12,583		20,733
Warrant Liabilities		11,779		9,117
Operating Lease Liabilities, Long-Term		8,471		8,622
Financing Lease Liabilities, Long-Term		552		602
Total liabilities		33,385		39,074
Stockholders’ Equity
Common Stock, $0.0001 par value; 2,000,000,000 shares authorized; 177,687,138 and 176,007,184 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively		18		18
Additional paid-in capital		579,975		577,603
Accumulated deficit		(38,248)		(19,090)
Accumulated other comprehensive loss		(2,274)		(3,159)
Total stockholders’ equity		539,471		555,372
Total liabilities and stockholders’ equity	$	572,856	$	594,446

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

6

Solid Power, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited)

(in thousands, except number of shares and per share amounts)

	Three Months Ended March 31,
	2023		2022
Revenue	$	3,792	$	2,196
Operating Expenses
Direct costs		6,274		2,030
Research and development		11,648		6,661
Marketing and sales		432		795
General and administrative		6,756		4,022
Total operating expenses		25,110		13,508
Operating Loss		(21,318)		(11,312)
Nonoperating Income
Interest income		4,835		240
Change in fair value of warrant liabilities		(2,662)		710
Interest expense		(13)		(5)
Total nonoperating income		2,160		945
Pretax Loss		(19,158)		(10,367)
Income tax benefit		—		(23)
Net Loss Attributable to Common Stockholders	$	(19,158)	$	(10,344)
Other Comprehensive Income (Loss)		885		(330)
Comprehensive Loss Attributable to Common Stockholders	$	(18,273)	$	(10,674)
Basic and diluted loss per share		(0.11)		(0.06)
Weighted average shares outstanding – basic and diluted		176,934,261		172,395,717

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

7

Solid Power, Inc.

Condensed Consolidated Statement of Stockholders’ Equity (Unaudited)

(in thousands, except number of shares)

	Common Stock
					Additional		Accumulated		Accumulated Other		Total Stockholders’
	Shares		Amount		paid-in capital		deficit		Comprehensive Loss		Equity
Balance as of December 31, 2022		176,007,184		18	$	577,603	$	(19,090)	$	(3,159)	$	555,372
Net loss		—		—		—		(19,158)		—		(19,158)
Stock options exercised		1,679,954		—		150		—		—		150
Stock-based compensation expense		—		—		2,222		—		—		2,222
Unrealized gain on marketable securities		—		—		—		—		885		885
Balance as of March 31, 2023		177,687,138	$	18	$	579,975	$	(38,248)	$	(2,274)	$	539,471

	Common Stock
					Additional		Accumulated		Accumulated Other		Total Stockholders’
	Shares		Amount		paid-in capital		deficit		Comprehensive Loss		Equity
Balance as of December 31, 2021		167,557,988		17	$	568,183	$	(9,535)	$	—	$	558,665
Net loss		—		—		—		(10,344)		—		(10,344)
Transaction costs		—		—		(12)		—		—		(12)
Stock options exercised		6,212,964		—		270		—		—		270
Stock-based compensation expense		—		—		1,596		—		—		1,596
Unrealized loss on marketable securities		—		—		—		—		(330)		(330)
Balance as of March 31, 2022		173,770,952	$	17	$	570,037	$	(19,879)	$	(330)	$	549,845

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

8

Solid Power, Inc.

Condensed Consolidated Statements of Cash Flows (Unaudited)

(in thousands)

	Three Months Ended March 31,
	2023		2022
Cash Flows from Operating Activities
Net loss	$	(19,158)	$	(10,344)
Adjustments to reconcile net loss to net cash and cash equivalents from operating activities:
Depreciation and amortization		2,264		753
Amortization of right-of-use assets		183		9
Stock compensation expense		2,222		1,596
Deferred taxes		—		(23)
Warrant liabilities		2,662		(710)
Amortization of premiums and accretion of discounts on marketable securities		(2,716)		—
Change in operating assets and liabilities that provided (used) cash and cash equivalents:
Contract receivable		140		(810)
Prepaid expenses and other assets		(1,129)		659
Accounts payable		(2,131)		(3,310)
Deferred revenue		(3,014)		(69)
Accrued and other liabilities		1,178		(2,300)
Lease liabilities		(132)		180
Net cash and cash equivalents used in operating activities		(19,631)		(14,369)
Cash Flows from Investing Activities
Purchases of property, plant and equipment		(11,581)		(10,527)
Purchases of marketable securities and long-term investments		(110,636)		(61,669)
Proceeds from sales of marketable securities		101,665		23,420
Purchases of intangible assets		(125)		(105)
Net cash and cash equivalents used in investing activities		(20,677)		(48,881)
Cash Flows from Financing Activities
Payments of debt		(7)		(38)
Proceeds from exercise of common stock options		150		270
Payments on finance lease liability		(70)		(12)
Transaction costs		—		(12)
Net cash and cash equivalents provided by financing activities		73		208
Net (decrease) increase in cash and cash equivalents		(40,235)		(63,042)
Cash and cash equivalents at beginning of period		50,123		513,447
Cash and cash equivalents at end of period		9,888		450,405
Supplemental information
Cash paid for interest	$	13	$	3
Accrued capital expenditures	$	3,370	$	3,119

See accompanying Notes to Condensed Consolidated Financial Statements (Unaudited).

9

Notes to Condensed Consolidated Financial Statements (Unaudited)

Note 1 – Nature of Business

Solid Power, Inc. (the “Company”) is developing solid state battery technology to enable the next generation of batteries for the fast-growing EV and other markets. The Company’s planned business model is to sell its sulfide-based solid electrolyte and to license its solid-state cell designs and manufacturing process.

Note 2 – Significant Accounting Policies

The significant accounting policies followed by the Company are set forth in Note 2 – Significant Accounting Policies to the Company’s financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 (the “2022 Form 10-K”) and are supplemented by the Notes to the Condensed Consolidated Financial Statements (Unaudited) (the “Notes”) included in this Quarterly Report on Form 10-Q for the period ended March 31, 2023 (this “Report”). The financial statements included in this Report (including the Notes) should be read in conjunction with the 2022 Form 10-K.

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared on the basis of generally accepted accounting principles in the United States (“GAAP”). The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from those estimates. All dollar amounts presented herein are in U.S. dollars and are in thousands, except par value, share and per share amounts.

The accompanying unaudited condensed consolidated financial statements include accounts of the Company and its wholly owned subsidiary, Solid Power Operating, Inc. All intercompany balances and transactions have been eliminated in consolidation. Additionally, certain prior period amounts have been reclassified to conform to current period presentation in the accompanying unaudited Condensed Consolidated financial statements.

Recent Accounting Pronouncements

Leases

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), followed by other related ASUs that provided targeted improvements and additional practical expedient options. On January 1, 2022, the Company adopted the standards under Topic 842 using the modified retrospective method and elected a number of the practical expedients in its implementation of Topic 842. The key change that affected the Company relates to accounting for operating leases for which it is the lessee that were historically off-balance sheet.

Financial Instruments

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. ASU 2016-13 also provides updated guidance regarding the impairment of available-for-sale debt securities and includes additional disclosure requirements. The Company adopted this guidance as of January 1, 2022.

The Company regularly reviews its available-for-sale marketable securities and evaluates the current expected credit losses by considering factors such as any changes in credit ratings, historical experience, market data, issuer-specific factors, and current economic conditions. Based on this analysis, any allowance for credit losses is immaterial and would be recorded as a reduction to the carrying value of the asset.

The Company reviews its receivable aging on an individual customer level, considering collectability of cash flows based on the risk of past events, current conditions, and forward-looking information. The Company establishes allowances for bad debts equal to the estimable portions of accounts receivable for which failure to collect is expected to occur. Allowances for doubtful accounts are recorded as reductions to the carrying values of the related receivables. To date, the Company has not recorded an allowance for doubtful accounts.

10

Note 3 – Property, Plant and Equipment

Property, plant and equipment are summarized as follows:

	March 31, 2023		December 31, 2022
Commercial production equipment	$	23,631	$	21,595
Laboratory equipment		4,916		3,278
Leasehold improvements		38,253		27,996
Furniture and computer equipment		1,483		1,482
Construction in progress		33,494		40,036
Total cost		101,777		94,387
Accumulated depreciation		(13,886)		(11,626)
Net property and equipment	$	87,891	$	82,761

Depreciation expenses are allocated ratably across operating expenses on the accompanying Condensed Consolidated Statements of Operations. Depreciation expenses for dedicated laboratory equipment and commercial production equipment are charged to research and development; other depreciation expenses are included in the Company’s overhead and are allocated across operating expenses on the accompanying Condensed Consolidated Statements of Operations based on Company personnel costs incurred.

Depreciation expense related to property, plant, and equipment are summarized as follows:

	Three Months Ended March 31,
	2023		2022
Depreciation expense	$	2,259	$	751

In 2022, the Company expanded its cell production capabilities through the construction of a second dry room and installation of a second cell pilot production line at its Louisville, Colorado facility, which is designed to produce larger format solid-state battery cells for the automotive qualification process.

The Company is expanding its electrolyte production to a second location in Thornton, Colorado. Scaling this production will allow it to produce larger quantities of electrolyte material required to feed cell-production lines and continue research and development efforts. The Company will begin producing electrolyte from this facility in 2023 and have placed portions of the facility into service.

	March 31, 2023		December 31, 2022
Construction in progress
Louisville, Colorado - 2nd cell pilot line	$	2,010	$	2,010
Louisville, Colorado - Other capital projects		2,431		2,206
Thornton, Colorado - Increased electrolyte production scale		29,053		35,820

Note 4 – Intangible Assets

Intangible assets of the Company are summarized as follows:

	March 31, 2023				December 31, 2022
	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Amount		Amortization		Amount		Amortization
Intangible assets:
Licenses	$	149	$	(54)	$	149	$	(51)
Patents		72		(2)		—		—
Patents pending		1,038		—		984		—
Trademarks		9		—		9		—
Trademarks pending		17		—		17		—
Total amortized intangible assets	$	1,285	$	(56)	$	1,159	$	(51)

11

Amortization expense for intangible assets is summarized as follows:

	Three Months Ended March 31,
	2023		2022
Amortization expense	$	5	$	2

Useful lives of intangible assets range from three to 20 years. Amortization expenses are allocated ratably across operating expenses on the accompanying condensed consolidated statements of operations.

Note 5 – Fair Value Measurements

The carrying amounts of certain financial instruments, such as cash equivalents, short-term investments, accounts receivable, accounts payable, and accrued liabilities approximate fair value due to their relatively short maturities.

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis

As of March 31, 2023 and December 31, 2022, the Company’s financial assets and liabilities measured and recorded at fair value on a recurring basis were classified within the fair value hierarchy as follows:

	March 31, 2023
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	166,411	$	—	$	—	$	166,411
Corporate Bonds	$	243,163	$	—	$	—	$	243,163
Government Bonds	$	48,774	$	—	$	—	$	48,774
U.S. Treasuries		—		—		—		—
Liabilities
Public Warrants	$	5,576	$	—	$	—	$	5,576
Private Warrants	$	—	$	6,203	$	—	$	6,203

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	165,179	$	—	$	—	$	165,179
Corporate Bonds	$	227,957	$	—	$	—	$	227,957
Government Bonds	$	42,865	$	—	$	—	$	42,865
U.S. Treasuries		9,930		—		—		9,930
Liabilities
Public Warrants	$	4,900	$	—	$	—	$	4,900
Private Warrants	$	—	$	4,217	$	—	$	4,217

The change in fair value of the Company’s marketable securities is included in other comprehensive loss. There were no transfers in and out of Level 3 fair value hierarchy during the three months ended March 31, 2023 and year ended December 31, 2022. For the three months ended March 31, 2023 the Company purchased $110,636 of marketable securities.

Fair Value of Common Stock Warrant Liabilities

The fair value of the Private Placement Warrant Liabilities (defined below) has been estimated using a Black-Scholes model as of March 31, 2023 and December 31, 2022 Consolidated Balance Sheet dates. The fair value of the Public Warrants (defined below) has been measured based on the quoted price of such warrants on the Nasdaq Stock Market, a Level 1 input. The estimated fair value of the Private Placement Warrants is determined using Level 2 inputs. Inherent in a Black-Scholes model are assumptions related to expected stock-price volatility, expected life, risk-free interest rate and dividend yield. Material increases (or decreases) in any of those inputs may result in a significantly higher (or lower) fair value measurement. The Company estimates the volatility of its Private Placement Warrants based on implied volatility from the Company’s Public Warrants and from historical volatility of select peer company’s common stock that matches the expected remaining life of the warrants. The risk-free interest rate is based on the U.S.

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Treasury zero-coupon yield curve for a maturity similar to the expected remaining life of the warrants. The expected life of the warrants is assumed to be equivalent to their remaining contractual term. The dividend yield is based on the historical rate, which the Company anticipates remaining at zero. The following table provides quantitative information regarding Level 2 inputs used in the recurring valuation of the Private Placement Warrants as of their measurement dates:

	March 31, 2023			December 31, 2022
Exercise Price	$	11.50		$	11.50
Stock Price	$	3.01		$	2.54
Volatility		79.0	%		71.3	%
Term		3.69			3.94
Risk-free rate		3.67	%		4.03	%

The following table provides a reconciliation of the Public Warrants measured at fair value using Level 1 directly observable inputs and Private Placement Warrants measured at fair value using Level 2 directly or indirectly observable inputs:

	Public Warrants		Private Warrants
	Level 1 Fair Value		Level 2 Fair Value
December 31, 2022	$	0.42	$	0.55
Change in fair value	$	0.04	$	0.31
March 31, 2023	$	0.46	$	0.86

The following tables provides a reconciliation of the March 31, 2023 three month change in fair value for the Public Warrants and Private Placement Warrants:

					Three months change in
Warrant Class	Level	Warrants	December 31, 2022		fair value		March 31, 2023
Public Warrants	1	12,120,985	$	4,900	$	676	$	5,576
Private Warrants	2	7,212,318	$	4,217	$	1,986	$	6,203
Total		19,333,303	$	9,117	$	2,662	$	11,779

Note 6 – Common Stock Warrant Liabilities

As of March 31, 2023 and December 31, 2022, there were 12,120,985 and 11,666,636 publicly traded warrants (“Public Warrants”) and 7,212,318 and 7,666,667 private placement warrants (“Private Placement Warrants,” and together with the Public Warrants, “Warrants”) outstanding, respectively. Each whole Warrant entitles the holder thereof to purchase one share of Common Stock at a price of $11.50 per share, subject to customary adjustments. Only whole Warrants are exercisable. The Warrants became exercisable on January 7, 2022 and will expire on December 8, 2026.

None of the Private Placement Warrants are redeemable by the Company so long as they are held by the initial purchasers of the Private Placement Warrants or their permitted transferees.

The Warrant Liabilities were initially measured at fair value upon closing of the transactions contemplated by the Business Combination Agreement and Plan of Reorganization, dated June 15, 2021 by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc., as amended (“Business Combination”), for $101,253 and subsequently re-measured at each reporting period. The Public Warrants were allocated a portion of the proceeds from the issuance of the units of common stock and one-third warrants in DCRC’s initial public offering equal to their fair value. The Company recognized a loss and gain in connection with changes in the fair value of warrant liabilities of $2,662 and $710 for the three months ending March 31, 2023 and 2022, respectively.

There have been no significant changes to our Public or Private Placement Warrants, including redemption terms disclosed in our 2022 Form 10-K.

Note 7 – Stockholders’ Equity

Common Stock

Stock options exercised for Common Stock are summarized in the table below:

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	Three months ended March 31,
	2023	2022
Stock options exercised	1,679,954	6,212,964

Cash received from options exercised under the Solid Power, Inc. 2014 Equity Incentive Plan (the “2014 Plan”) for the three months ended March 31, 2023 and 2022 was $150 and $270, respectively.

Note 8 – Stock Based Compensation

There have been no significant changes to our equity incentive plans, Employee Stock Purchase Plan, or accounting methodology for stock based compensation, as disclosed in our 2022 Form 10-K.

The fair value of stock options and Restricted Stock Units (“RSUs”) issued to employees and directors is recognized as compensation expense over the period of service that generally coincides with the vesting period of the award. The Company allocated compensation ratably across Operating Expenses within the following financial statement lines. When calculating the amount of annual compensation expense, the Company has elected not to estimate forfeitures and instead accounts for forfeitures as they occur.

For the three months ended March 31, 2023, the Company recognized compensation costs totaling:

	Three months ended March 31,
	2023		2022
Equity-based compensation costs related to RSUs	$	635	$	—
Equity-based compensation costs related to stock options		1,587		1,596
Total equity-based compensation costs	$	2,222	$	1,596
Unrecognized future compensation cost		59,945		21,455

The following table summarizes our award activity for stock options and RSUs for the three months ended March 31, 2023:

	RSUs	Stock Options
Balance at December 31, 2022	1,057,980		25,998,172
Granted	1,797,034		3,272,873
Vested or Exercised	—		(1,679,954)
Forfeited	(88,441)		(1,494,020)
Outstanding at March 31, 2023	2,766,573		26,097,071

Stock Options

The fair value of each option grant during the three months ended March 31, 2023 and 2022 was estimated on the grant date using the Black-Scholes option pricing model with the following weighted-average assumptions used:

	Three months ended March 31,
	2023			2022
Approximate risk‑free rate		4.28	%		1.02	%
Volatility		46.86	%		59.97	%
Average expected life (years)		6 years			6 years
Dividend yield		—	%		—	%
Weighted‑average grant date fair value	$	3.11		$	0.95
Estimated fair value of total options granted	$	5,165		$	31

Note 9 –Loss Per Share

Basic loss per share represents net loss attributable to common stock divided by the basic weighted average number of common stock outstanding during the period.

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Due to the net loss for the three months ended March 31, 2023 and 2022, diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been anti-dilutive. Warrants outstanding in 2023 and 2022 were not included in the computation of diluted earnings per share because the Warrant’s exercise price for the period was greater than the average market price of the common stock.

The table below sets forth the basic and diluted loss per share calculation for the three months ended March 31, 2023 and 2022.

	Three Months Ended March 31,
	2023		2022
Net loss attributable to common stockholders	$	(19,158)	$	(10,344)
Weighted average shares outstanding – basic and diluted		176,934,261		172,395,717
Basic and diluted loss per share	$	(0.11)	$	(0.06)

As of the three months ended March 31, 2023 and 2022, potentially dilutive securities excluded from the diluted loss per share calculation are as follows (in shares):

	Three Months Ended March 31,
	2023	2022
Common Stock Warrants	19,333,303	19,333,303
2014 & 2021 Equity Incentive Plan - Stock Options	25,352,980	27,837,492
2021 Equity Incentive Plan - Restricted Stock Units	1,764,062	—
2021 Employee Stock Purchase Plan	90,314	—
Contingently Issuable Common Stock	49,834	—
Total potentially dilutive securities	46,590,493	47,170,795

Note 10 – Leases

The Company leases its two facilities and certain equipment. Fixed rent generally escalates each year, and the Company is responsible for a portion of the landlords’ operating expenses such as property tax, insurance and common area maintenance.

The Company’s facility in Louisville, Colorado, is under a noncancelable operating lease with a maturity date in September 2029. In 2022, the Company amended the lease to incorporate a prior subleased space into the base lease and extend the term of the lease. The Company has the right to renew this lease for an additional five-year period.

On September 1, 2021, the Company entered into an industrial operating lease agreement for its facility in Thornton, Colorado, with the initial term through March 31, 2029. Under this operating lease, the Company has one option to renew for five years, which has been included in the calculation of lease liabilities and right-of-use assets at the adoption date of the lease accounting standard on January 1, 2022, as the exercise of the option was reasonably certain. As the renewal rent has not been negotiated, the Company used an estimated rent rate which approximated the fair market rent at adoption of ASC 842 on January 1, 2022 for the extension period.

The Company has certain equipment leases classified as finance leases as of March 31, 2023.

The Company’s leases do not have any contingent rent payments and do not contain residual value guarantees.

The components of lease expense are as follows:

	Three Months Ended
	March 31, 2023
Finance lease costs:
Amortization of right-of-use assets	$	44
Interest on lease liabilities		12
Operating lease costs		308
Total lease expense	$	364

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The components of cash flow information related to leases are as follows:

	Three Months Ended
	March 31, 2023
Operating outgoing cash flows – finance lease	$	12
Financing outgoing cash flows – finance lease		66
Operating outgoing cash flows – operating lease		283

	March 31, 2023
Finance lease
Weighted-average remaining lease term – finance lease (in years)	3.22
Weighted-average discount rate – finance lease	5.9	%
Operating lease
Weighted-average remaining lease term – operating lease (in years)	9.95
Weighted-average discount rate – operating lease	6.9	%

As of March 31, 2023, future minimum payments during the next five years and thereafter are as follows:

Fiscal year	Finance Lease		Operating Lease
2023 (remaining nine months)	$	236	$	854
2024		315		1,173
2025		200		1,210
2026		101		1,248
2027		37		1,288
2028		16		1,329
Thereafter		—		5,244
Total		905		12,346
Less present value discount		77		3,307
Total lease liabilities	$	828	$	9,039

Note 11 – Related Party Transactions

During the three months ended March 31, 2023, the Company recognized $3,000 of revenue and $1,000 of deferred revenue related to the BMW joint development agreement.

Note 12 – Retirement Plans

The Company sponsors a 401(k) plan for all eligible employees. The plan provides for the Company to make a discretionary matching contribution. Contributions to the plan totaled $180 and $144 for the three months ended March 31, 2023 and 2022, respectively.

Note 13 – Income Taxes

The Company’s effective tax rate was 0.0% and 0.21% for the three months ended March 31, 2023 and 2022, respectively. The change in the effective tax rate between periods was due to the Company was being in a full valuation allowance for the three months ended March 31, 2023.

Note 14 – Contingencies

In the normal course of business, the Company may be party to litigation from time to time. The Company maintains insurance to cover certain actions and believes that resolution of such litigation will not have a material adverse effect on the Company.

DCRC, the predecessor to the Company, received a demand letter dated August 31, 2021 from counsel purporting to represent a shareholder of DCRC alleging that the proposed vote on the Authorized Share Charter Proposal (the “Proposal”) for the proposed Business Combination with Solid Power Operating, Inc. violated Section 242(b)(2) of the Delaware General Corporation

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law and demanded that DCRC provide DCRC’s Class A stockholders with a separate class vote on the Proposal. DCRC subsequently provided for the Class A stockholders to have a separate class vote on the Proposal share increase. The Proposal was approved and the Business Combination closed. The counsel who issued this demand letter made a fee demand (the “Fee Demand”) for prompting the change in the Proposal. The Company accrued a liability of $500 on its Consolidated Balance Sheets as of December 31, 2021 in anticipation of settling the Fee Demand. On March 10, 2022, the Company settled the Fee Demand for an amount that is materially consistent with the Company’s accrual.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the consolidated financial statements and related notes thereto included elsewhere in this Report. The following discussion contains forward-looking statements that reflect future plans, estimates, beliefs, and expected performance. For additional discussion, see “Cautionary Note Regarding Forward-Looking Statements” above. The forward-looking statements are dependent upon events, risks, and uncertainties that may be outside of our control. Our actual results could differ materially from those discussed in these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified below and those discussed elsewhere in this Report and under Part I, Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2022. Unless indicated otherwise, the following discussion and analysis of results of operations and financial condition and liquidity relates to our current continuing operations and should be read in conjunction with the consolidated financial statements and notes thereto of this Form 10-Q and our Annual Report on Form 10-K for the year ended December 31, 2022, dated March 1, 2023. We do not undertake, and expressly disclaim, any obligation to publicly update any forward-looking statements, whether as a result of new information, new developments or otherwise, except to the extent that such disclosure is required by applicable law.

Overview

We are developing solid state battery technologies to enable the next generation of rechargeable batteries for the fast-growing EV and other markets.

Our core technology is our proprietary sulfide-based solid electrolyte material, which replaces the liquid or gel electrolyte used in conventional lithium-ion batteries. We believe that our electrolyte material can enable extended driving range, longer battery life, improved safety, and lower costs compared to conventional lithium-ion.

We also are designing and developing solid state cells that utilize our electrolyte in the cathode, anode, and separator layers. We currently produce 0.2 Ah, 2 Ah, 20 Ah, and EV cells on two pilot lines using established manufacturing processes. In 2022, we installed our EV line, which allows us to produce EV cells between 60 Ah and 100 Ah. The EV line is designed to produce cells as part of the automotive qualification process and for vehicle integration demonstration purposes.

We have partnered with industry leaders, including Ford Motor Company, BMW, and SK On Co., Ltd. We are working closely with each of these partners to refine and validate our cell designs and electrolyte material with the ultimate goal to commercialize our technologies. Our business model – selling our electrolyte to cell manufacturers and licensing our cell designs and manufacturing processes – distinguishes us from many of our competitors who plan to be commercial battery manufacturers. Ultimately, we endeavor to be a leading producer and distributor of sulfide-based solid electrolyte material for powering both EVs and other applications. Since we do not intend to commercially produce battery cells, we expect to invest less than other development-stage battery companies that plan to commercially manufacture their own cell designs and construct battery production facilities.

The products we currently make are in the development stage and require continued development and validation before we can commercialize either our electrolyte or cell technology.

Key Factors Affecting Operating Results

We are a research and development-stage company and have not generated significant revenue through the sale of our electrolyte or licensing of our cell designs. Our ability to commercialize our products depends on several factors that present significant opportunities for us but also pose material risks and challenges, including those discussed in “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements,” appearing in this Report, which are incorporated by reference.

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Prior to reaching commercialization, we must test and validate our products to ensure they meet the performance and safety requirements of our customers. We also will have to negotiate licensing and supply contracts with our customers on terms and conditions that are mutually acceptable. We will need to scale production of our electrolyte material to satisfy anticipated demand. All of these factors will take time and affect our operating results. Since many factors are difficult to quantify, our actual operating results may be different than we currently anticipate.

Our revenue generated to date has primarily come from research and development performance on government contracts and research and development licensing activities. We have and are deploying substantial capital to expand our production capabilities and engage in research and development programs. We also continue to incur significantly more administrative expenses as a publicly traded company.

In addition to meeting our development goals and reaching commercialization, future growth and demand for our products will be highly dependent upon consumers adopting EVs. The market for new energy vehicles is still rapidly evolving due to emerging technologies, competitive pricing, government regulation and industry standards, and changing consumer demands and behaviors.

Basis of Presentation

We currently conduct our business through one operating segment. As a research and development company with no commercial operations, our activities to date have been limited and were conducted primarily in the United States. Our historical results are reported under GAAP and in U.S. dollars.

Results of Operations

Comparison of the Three Months Ended March 31, 2023 to the Three Months Ended March 31, 2022

During the three months ended March 31, 2023, we expanded and accelerated our development efforts through increased capital and operational expenditures. We continued to invest in talent while expanding our facilities, production equipment, and capabilities. We expect to continue to increase our spending in all operational areas through the remainder of 2023 in order to execute our development strategy.

The following table is a consolidated summary of our operating results for the periods indicated:

	Three Months Ended March 31,
(in thousands)	2023		2022		Change		%
Revenue	$	3,792	$	2,196	$	1,596	73	%
Operating Expenses
Direct costs		6,274		2,030		4,244	209	%
Research and development		11,648		6,661		4,987	75	%
Marketing and sales		432		795		(363)	(46)	%
General and administrative		6,756		4,022		2,734	68	%
Total operating expenses		25,110		13,508		11,602	86	%
Operating Loss		(21,318)		(11,312)		(10,006)	(88)	%
Nonoperating Income
Interest income		4,835		240		4,595	NM
Change in fair value of warrant liabilities		(2,662)		710		(3,372)	NM
Interest expense		(13)		(5)		(8)	160	%
Total nonoperating income	$	2,160	$	945	$	1,215	NM
Pretax Loss		(19,158)		(10,367)		(8,791)	85	%
Income tax benefit		—		(23)		23	NM
Net Loss attributable to Common Stockholders	$	(19,158)	$	(10,344)	$	(8,814)	85	%
Other Comprehensive Income (Loss)		885		(330)		1,215	NM
Comprehensive loss attributable to Common Stockholders	$	(18,273)	$	(10,674)	$	(7,599)	NM

NM = Not meaningful

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The key factors driving our results of operations for the three months ended March 31, 2023, including our increased operating loss as compared to the corresponding period in 2022, were as follows:

● Revenue and direct costs – our JDA revenue and related direct cost drove the overall increase for the period, while revenues and direct costs from performance on government contracts decreased slightly.

● Research and development – our research and development costs increased primarily as a result of increased labor and material costs as we expanded the development efforts of our battery cells and electrolyte material. We expect our development costs to continue to increase as we continue to accelerate both the pace and scope of our development efforts.

● General and administrative – our general and administrative costs increased primarily due to additional planned hiring, workforce development and training, and enterprise resource planning system costs and implementation efforts.

● Non-cash stock compensation costs increased across Direct costs, Research and development, and General and administrative expenses related to increased labor costs.

● Nonoperating income – our nonoperating income increased primarily due to strategic cash investments in A-rated investments which increased both our interest income and other income, partially offset by loss on fair value adjustment of warrant liabilities.

Liquidity and Capital Resources

Sources of Liquidity

Our sources of cash have historically been primarily derived from the sale of equity, with a small portion coming from performance on government contracts and commercial revenues.

As of March 31, 2023 and December 31, 2022, we had total liquidity, as set forth below:

(in thousands)	March 31, 2023		December 31, 2022
Cash and cash equivalents	$	9,888	$	50,123
Marketable securities		245,563		272,957
Long-term investments		212,785		172,974
Total liquidity	$	468,236	$	496,054

On March 10, 2023, Silicon Valley Bank (“SVB”) was closed by the California Department of Financial Protection and Innovation, which appointed the Federal Deposit Insurance Corporation (“FDIC”) as receiver. On March 13, 2023, the FDIC announced that it had transferred all insured and uninsured deposits and substantially all assets of SVB to a newly created, full-service FDIC-operated “bridge bank” called Silicon Valley Bridge Bank, N.A., where depositors would have full access to their money immediately. The Company did not incur any loss related to its operating accounts and did not hold any investments with SVB. We continue to invest in A-rated investments with two top-tier banks, and have no exposure related to SVB going forward.

Short-Term Liquidity Requirements

We anticipate that our most significant capital expenditures in 2023 will relate to finishing construction of our electrolyte facility, and enhancing production capabilities at this facility and our cell manufacturing lines. In addition, our short-term liquidity requirements include operating and capital expenses needed to further our development programs and to optimize our pilot production lines and electrolyte manufacturing capabilities. We expect to fund our short-term liquidity requirements through our cash on hand and other liquid assets.

Long-Term Liquidity Requirements

We believe that our cash on hand is sufficient to meet our operating cash needs (including expenditures for the increased pace and scope of development as well as increased public company costs), working capital and capital expenditure requirements for a

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period of at least the next 12 months and longer term until we generate adequate cash flows from licensing activities and/or electrolyte sales.

We may, however, need additional cash if there are material changes to our business conditions or other developments, including changes to our operating plan, development progress, delays in negotiations with OEMs, cell manufacturers or other suppliers, market adoption of EVs, supply chain challenges, competitive pressures, inflation, and regulatory developments. To the extent that our resources are insufficient to satisfy our cash requirements, we may need to seek additional equity or debt financing. We also may opportunistically seek to enhance our liquidity through equity or debt financing, if such financing becomes available to us on terms that we consider favorable. If the financing is not available, or if the terms of financing are less desirable than we expect, we may be forced to take actions to reduce our capital or operating expenditures, which may adversely affect our development, business, operating results, financial condition and prospects.

Cash Flows

The following table summarizes our cash flows from operating, investing, and financing activities for the periods presented:

	Three Months Ended March 31,
(in thousands)	2023		2022
Net cash used in operating activities	$	(19,631)	$	(14,369)
Net cash used in investing activities	$	(20,677)	$	(48,881)
Net cash provided by financing activities	$	73	$	208

Cash flows used in operating activities:

Cash used in operating activities increased from March 31, 2022 to 2023 primarily attributable to our operating loss, which was driven by continued increase in research and development costs and general and administrative expenses. We continue to expect cash flows used in operating activities to increase as we accelerate both the pace and scope of our development efforts, and work to achieve commercialization of our products. We continue to anticipate increased expenditures for research and development and general and administrative functions to support growth of our development efforts.

Cash flows used in investing activities:

Cash used in investing activities decreased from March 31, 2022 to 2023 primarily due to an increase in capital expenditures, investments in patents, and the net effect of increased purchase and sales of marketable securities. Capital expenditures were primarily for custom manufacturing equipment in connection with our expansion of electrolyte production capabilities. We continue to expect cash used in investing activities to increase as we finalize the build out of our electrolyte production facility and increase its production capabilities, and as we increase our electrolyte production scale. Each of our locations will continue to require investment in specialized equipment to facilitate the manufacturing process of our electrolyte material and battery cells. As our production processes are scaled in the future, especially with respect to our electrolyte material, we expect capital expenditures to increase.

Cash flows provided by financing activities:

Net cash provided by financing activities for the three months ended March 31, 2023 and 2022 was primarily from the cash exercise of stock options.

Off-Balance Sheet Arrangements

We are not a party to any off-balance sheet arrangements, as defined under SEC rules.

Critical Accounting Estimates

Except as discussed in Note 2 of our unaudited financial statements included in this Report, there were no significant and material changes in our critical accounting policies and use of estimates during the three months ended March 31, 2023, as compared to those disclosed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates” in our 2022 Annual Report on Form 10-K, filed with the SEC on March 1, 2023.

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Recent Accounting Pronouncements

See Note 2 to our audited financial statements for more information.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

There have been no material changes to the Company’s market risk during the three months ended March 31, 2023. For a discussion of the Company’s exposure to market risk, refer to the Company’s market risk disclosures set forth in Part II, Item 7A, “Quantitative and Qualitative Disclosures About Market Risk” of our Annual Report on Form 10-K for the year ended December 31, 2022.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

In designing and evaluating our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired controls. As required by Rule 13a-15(b) under the Exchange Act, our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2023. Based upon that evaluation, our principal executive officer and principal financial officer concluded that, as of the end of the period covered by this Report, our disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting that occurred during the three months ended March 31, 2023 covered by this Report that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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PART II – OTHER INFORMATION

Item 1. Legal Proceedings

From time to time, we may become involved in litigation or other legal proceedings. We are not currently a party to any litigation or legal proceedings that are likely to have a material adverse effect on our business. Regardless of outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management resources and other factors.

Item 1A. Risk Factors

Our business, prospects, reputation, results of operations and financial condition, as well as the price of our common stock and warrants, can be affected by a number of factors, whether currently known or unknown, including those described in Part I, Item 1A. “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2022. When any one or more of these risks materialize from time to time, our business, reputation, results of operations and financial condition, as well as the price of our common stock and warrants, can be materially and adversely affected. Except as set forth below, there have been no material changes to our risk factors since the Annual Report on Form 10-K for the year ended December 31, 2022.

We maintain cash deposits in excess of federally insured limits. Adverse developments affecting financial institutions, including bank failures, could adversely affect our liquidity and financial performance.

We maintain domestic cash deposits in Federal Deposit Insurance Corporation (“FDIC”) insured banks that exceed the FDIC insurance limits. Bank failures, events involving limited liquidity, defaults, non-performance, or other adverse developments that affect financial institutions, or concerns or rumors about such events, may lead to liquidity constraints. For example, on March 10, 2023, Silicon Valley Bank failed and was taken into receivership by the FDIC. The failure of a bank, or other adverse conditions in the financial or credit markets impacting financial institutions at which we maintain balances, could adversely impact our liquidity and financial performance. There can be no assurance that our deposits in excess of the FDIC or other comparable insurance limits will be backstopped by the U.S. or applicable foreign government, or that any bank or financial institution with which we do business will be able to obtain needed liquidity from other banks, government institutions, or by acquisition in the event of a failure or liquidity crisis.

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Item 6. Exhibits

		Incorporated by Reference
Exhibit Number	Description	Schedule Form	File Number	Exhibit/Annex	Filing Date
2.1	Business Combination Agreement and Plan of Reorganization, dated as of June 15, 2021, by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc.	424B3	333-258681	Annex A	November 10, 2021
2.2	First Amendment to the Business Combination Agreement, dated October 12, 2021, by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc.	424B3	333-258681	Annex A-1	November 10, 2021
3.1	Second Amended and Restated Certificate of Incorporation	8-K	001-40284	3.1	December 13, 2021
3.2	Amended and Restated Bylaws	8-K	001-40284	3.1	November 21, 2022
31.1*	Certification Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934
31.2*	Certification Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934
32.1**	Section 1350 Certification
32.2**	Section 1350 Certification
101.INS*	XBRL Instance Document – the instance document does not appear in the Interactive Data file because its Inline XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema Document
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	Inline XBRL Taxonomy Extension Definition Document
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase
104*	Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith.

** Furnished herewith.

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SIGNATURE

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.

Date: May 10, 2023 Solid Power, Inc.

By:	/s/ David Jansen
Name:	David Jansen
Title:	Interim Chief Executive Officer, President and Director
(Principal Executive Officer)

By:	/s/ Kevin Paprzycki
Name:	Kevin Paprzycki
Title:	Chief Financial Officer and Treasurer
(Principal Financial and Accounting Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO RULES 13a-14(a) AND 15d-14(a) UNDER THE

SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION

302 OF THE SARBANES-OXLEY ACT OF 2002

I, David Jansen, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Solid Power, Inc. for the quarterly period ended March 31, 2023;

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 and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;

(c)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

(d)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 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: May 10, 2023
	By:	/s/ David Jansen
	David Jansen
	Interim Chief Executive Officer and President
	(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO RULES 13a-14(a) AND 15d-14(a) UNDER THE

SECURITIES EXCHANGE ACT OF 1934, AS ADOPTED PURSUANT TO SECTION

302 OF THE SARBANES-OXLEY ACT OF 2002

I, Kevin Paprzycki, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q of Solid Power, Inc. for the quarterly period ended March 31, 2023;

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 and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) 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)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;

(c)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

(d)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 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: May 10, 2023
	By:	/s/ Kevin Paprzycki
	Kevin Paprzycki
	Chief Financial Officer and Treasurer
	(Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Solid Power, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, to the best of my knowledge, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) 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.

Date: May 10, 2023
	By:	/s/ David Jansen
	David Jansen
	Interim Chief Executive Officer and President
	(Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Solid Power, Inc. (the “Company”) on Form 10-Q for the period ended March 31, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, to the best of my knowledge, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1. The Report fully complies with the requirements of section 13(a) or 15(d) 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.

Date: May 10, 2023
	By:	/s/ Kevin Paprzycki
	Kevin Paprzycki
	Chief Financial Officer and Treasurer
	(Principal Financial and Accounting Officer)

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 08, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2023
Entity File Number	001-40284
Entity Registrant Name	SOLID POWER, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1888095
Entity Address, Address Line One	486 S. Pierce Ave., Suite E
Entity Address, City or Town	Louisville
Entity Address State Or Province	CO
Entity Address, Postal Zip Code	80027
City Area Code	303
Local Phone Number	219-0720
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		177,829,714
Entity Central Index Key	0001844862
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Amendment Flag	false
Common Stock
Document and Entity Information
Title of 12(b) Security	Common stock, par value $0.0001 per share
Trading Symbol	SLDP
Security Exchange Name	NASDAQ
Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50
Document and Entity Information
Title of 12(b) Security	Warrants, each whole warrant exercisable for one share of common stock at an exercise price of $11.50
Trading Symbol	SLDPW
Security Exchange Name	NASDAQ

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current Assets
Cash and cash equivalents	$ 9,888	$ 50,123
Marketable securities	245,563	272,957
Contract receivables	1,700	1,840
Prepaid expenses and other current assets	4,219	2,888
Total current assets	261,370	327,808
Property, Plant and Equipment, net	87,891	82,761
Right-Of-Use Operating Lease Asset, net	7,586	7,725
Right-Of-Use Financing Lease Asset, net	896	922
Other Assets	1,099	1,148
Long-term Investments	212,785	172,974
Intangible Assets, net	1,229	1,108
Total assets	572,856	594,446
Current Liabilities
Accounts payable	3,577	10,070
Current portion of long-term debt		7
Deferred revenue	1,036	4,050
Accrued and other current liabilities:
Accrued compensation	2,023	4,528
Other accrued liabilities	5,104	1,256
Operating lease liabilities, short-term	567	549
Financing lease liability, short-term	276	273
Total current liabilities	12,583	20,733
Warrant Liabilities	11,779	9,117
Operating Lease Liabilities, Long-Term	8,471	8,622
Financing Lease Liabilities, Long-Term	552	602
Total liabilities	33,385	39,074
Stockholders' Equity
Common Stock, $0.0001 par value; 2,000,000,000 shares authorized; 177,687,138 and 176,007,184 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	18	18
Additional paid-in capital	579,975	577,603
Accumulated deficit	(38,248)	(19,090)
Accumulated other comprehensive loss	(2,274)	(3,159)
Total stockholders' equity	539,471	555,372
Total liabilities and stockholders' equity	$ 572,856	$ 594,446

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Condensed Consolidated Balance Sheets
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares outstanding	177,687,138	176,007,184
Common stock, shares issued	177,687,138	176,007,184

XML

Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Condensed Consolidated Statements of Operations and Comprehensive Loss
Revenue	$ 3,792	$ 2,196
Operating Expenses
Direct costs	6,274	2,030
Research and development	11,648	6,661
Marketing and sales	432	795
General and administrative	6,756	4,022
Total operating expenses	25,110	13,508
Operating Loss	(21,318)	(11,312)
Nonoperating Income
Interest income	4,835	240
Change in fair value of warrant liabilities	(2,662)	710
Interest expense	(13)	(5)
Total nonoperating income	2,160	945
Pretax Loss	(19,158)	(10,367)
Income tax benefit		(23)
Net Loss Attributable to Common Stockholders	(19,158)	(10,344)
Other Comprehensive Income (Loss)	885	(330)
Comprehensive Loss Attributable to Common Stockholders	$ (18,273)	$ (10,674)
Net loss per share - Basic	$ (0.11)	$ (0.06)
Net loss per share - Diluted	$ (0.11)	$ (0.06)
Weighted average shares outstanding - Basic	176,934,261	172,395,717
Weighted average shares outstanding - Diluted	176,934,261	172,395,717

XML

Condensed Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Common stock	Additional paid-in capital	Accumulated deficit	Accumulated Other Comprehensive Loss	Total
Balance at the beginning at Dec. 31, 2021	$ 17	$ 568,183	$ (9,535)		$ 558,665
Balance at the beginning (in shares) at Dec. 31, 2021	167,557,988
Increase (Decrease) in Stockholders' Equity
Net loss			(10,344)		(10,344)
Transaction costs		(12)			(12)
Stock options exercised		270			270
Stock options exercised (in shares)	6,212,964
Stock-based compensation expense		1,596			1,596
Unrealized gain (loss) on marketable securities				$ (330)	(330)
Balance at the end at Mar. 31, 2022	$ 17	570,037	(19,879)	(330)	549,845
Balance at the end (in shares) at Mar. 31, 2022	173,770,952
Balance at the beginning at Dec. 31, 2022	$ 18	577,603	(19,090)	(3,159)	555,372
Balance at the beginning (in shares) at Dec. 31, 2022	176,007,184
Increase (Decrease) in Stockholders' Equity
Net loss			(19,158)		(19,158)
Stock options exercised		150			150
Stock options exercised (in shares)	1,679,954
Stock-based compensation expense		2,222			2,222
Unrealized gain (loss) on marketable securities				885	885
Balance at the end at Mar. 31, 2023	$ 18	$ 579,975	$ (38,248)	$ (2,274)	$ 539,471
Balance at the end (in shares) at Mar. 31, 2023	177,687,138

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash Flows from Operating Activities
Net loss	$ (19,158)	$ (10,344)
Adjustments to reconcile net loss to net cash and cash equivalents from operating activities:
Depreciation and amortization	2,264	753
Amortization of right-of-use assets	183	9
Stock compensation expense	2,222	1,596
Deferred taxes		(23)
Warrant liabilities	2,662	(710)
Amortization of premiums and accretion of discounts on marketable securities	(2,716)
Change in operating assets and liabilities that provided (used) cash and cash equivalents:
Contract receivable	140	(810)
Prepaid expenses and other assets	(1,129)	659
Accounts payable	(2,131)	(3,310)
Deferred revenue	(3,014)	(69)
Accrued and other liabilities	1,178	(2,300)
Lease liabilities	(132)	180
Net cash and cash equivalents used in operating activities	(19,631)	(14,369)
Cash Flows from Investing Activities
Purchases of property, plant and equipment	(11,581)	(10,527)
Purchases of marketable securities and long-term investments	(110,636)	(61,669)
Proceeds from sales of marketable securities	101,665	23,420
Purchases of intangible assets	(125)	(105)
Net cash and cash equivalents used in investing activities	(20,677)	(48,881)
Cash Flows from Financing Activities
Payments of debt	(7)	(38)
Proceeds from exercise of common stock options	150	270
Payments on finance lease liability	(70)	(12)
Transaction costs		(12)
Net cash and cash equivalents provided by financing activities	73	208
Net (decrease) increase in cash and cash equivalents	(40,235)	(63,042)
Cash and cash equivalents at beginning of period	50,123	513,447
Cash and cash equivalents at end of period	9,888	450,405
Supplemental information
Cash paid for interest	13	3
Accrued capital expenditures	$ 3,370	$ 3,119

XML

Nature of Business

3 Months Ended

Mar. 31, 2023

Nature of Business

Nature of Business

Note 1 – Nature of Business

Solid Power, Inc. (the “Company”) is developing solid state battery technology to enable the next generation of batteries for the fast-growing EV and other markets. The Company’s planned business model is to sell its sulfide-based solid electrolyte and to license its solid-state cell designs and manufacturing process.

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Significant Accounting Policies

3 Months Ended

Mar. 31, 2023

Significant Accounting Policies

Significant Accounting Policies

Note 2 – Significant Accounting Policies

The significant accounting policies followed by the Company are set forth in Note 2 – Significant Accounting Policies to the Company’s financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 (the “2022 Form 10-K”) and are supplemented by the Notes to the Condensed Consolidated Financial Statements (Unaudited) (the “Notes”) included in this Quarterly Report on Form 10-Q for the period ended March 31, 2023 (this “Report”). The financial statements included in this Report (including the Notes) should be read in conjunction with the 2022 Form 10-K.

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared on the basis of generally accepted accounting principles in the United States (“GAAP”). The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from those estimates. All dollar amounts presented herein are in U.S. dollars and are in thousands, except par value, share and per share amounts.

The accompanying unaudited condensed consolidated financial statements include accounts of the Company and its wholly owned subsidiary, Solid Power Operating, Inc. All intercompany balances and transactions have been eliminated in consolidation. Additionally, certain prior period amounts have been reclassified to conform to current period presentation in the accompanying unaudited Condensed Consolidated financial statements.

Recent Accounting Pronouncements

Leases

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), followed by other related ASUs that provided targeted improvements and additional practical expedient options. On January 1, 2022, the Company adopted the standards under Topic 842 using the modified retrospective method and elected a number of the practical expedients in its implementation of Topic 842. The key change that affected the Company relates to accounting for operating leases for which it is the lessee that were historically off-balance sheet.

Financial Instruments

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. ASU 2016-13 also provides updated guidance regarding the impairment of available-for-sale debt securities and includes additional disclosure requirements. The Company adopted this guidance as of January 1, 2022.

The Company regularly reviews its available-for-sale marketable securities and evaluates the current expected credit losses by considering factors such as any changes in credit ratings, historical experience, market data, issuer-specific factors, and current economic conditions. Based on this analysis, any allowance for credit losses is immaterial and would be recorded as a reduction to the carrying value of the asset.

The Company reviews its receivable aging on an individual customer level, considering collectability of cash flows based on the risk of past events, current conditions, and forward-looking information. The Company establishes allowances for bad debts equal to the estimable portions of accounts receivable for which failure to collect is expected to occur. Allowances for doubtful accounts are recorded as reductions to the carrying values of the related receivables. To date, the Company has not recorded an allowance for doubtful accounts.

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Property, Plant and Equipment

3 Months Ended

Mar. 31, 2023

Property, Plant and Equipment

Property, Plant and Equipment

Note 3 – Property, Plant and Equipment

Property, plant and equipment are summarized as follows:

	March 31, 2023		December 31, 2022
Commercial production equipment	$	23,631	$	21,595
Laboratory equipment		4,916		3,278
Leasehold improvements		38,253		27,996
Furniture and computer equipment		1,483		1,482
Construction in progress		33,494		40,036
Total cost		101,777		94,387
Accumulated depreciation		(13,886)		(11,626)
Net property and equipment	$	87,891	$	82,761

Depreciation expenses are allocated ratably across operating expenses on the accompanying Condensed Consolidated Statements of Operations. Depreciation expenses for dedicated laboratory equipment and commercial production equipment are charged to research and development; other depreciation expenses are included in the Company’s overhead and are allocated across operating expenses on the accompanying Condensed Consolidated Statements of Operations based on Company personnel costs incurred.

Depreciation expense related to property, plant, and equipment are summarized as follows:

	Three Months Ended March 31,
	2023		2022
Depreciation expense	$	2,259	$	751

In 2022, the Company expanded its cell production capabilities through the construction of a second dry room and installation of a second cell pilot production line at its Louisville, Colorado facility, which is designed to produce larger format solid-state battery cells for the automotive qualification process.

The Company is expanding its electrolyte production to a second location in Thornton, Colorado. Scaling this production will allow it to produce larger quantities of electrolyte material required to feed cell-production lines and continue research and development efforts. The Company will begin producing electrolyte from this facility in 2023 and have placed portions of the facility into service.

	March 31, 2023		December 31, 2022
Construction in progress
Louisville, Colorado - 2nd cell pilot line	$	2,010	$	2,010
Louisville, Colorado - Other capital projects		2,431		2,206
Thornton, Colorado - Increased electrolyte production scale		29,053		35,820

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Intangible Assets

3 Months Ended

Mar. 31, 2023

Intangible Assets

Intangible Assets

Note 4 – Intangible Assets

Intangible assets of the Company are summarized as follows:

	March 31, 2023				December 31, 2022
	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Amount		Amortization		Amount		Amortization
Intangible assets:
Licenses	$	149	$	(54)	$	149	$	(51)
Patents		72		(2)		—		—
Patents pending		1,038		—		984		—
Trademarks		9		—		9		—
Trademarks pending		17		—		17		—
Total amortized intangible assets	$	1,285	$	(56)	$	1,159	$	(51)

Amortization expense for intangible assets is summarized as follows:

	Three Months Ended March 31,
	2023		2022
Amortization expense	$	5	$	2

Useful lives of intangible assets range from three to 20 years. Amortization expenses are allocated ratably across operating expenses on the accompanying condensed consolidated statements of operations.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2023

Fair Value Measurements

Fair Value Measurements

Note 5 – Fair Value Measurements

The carrying amounts of certain financial instruments, such as cash equivalents, short-term investments, accounts receivable, accounts payable, and accrued liabilities approximate fair value due to their relatively short maturities.

Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis

As of March 31, 2023 and December 31, 2022, the Company’s financial assets and liabilities measured and recorded at fair value on a recurring basis were classified within the fair value hierarchy as follows:

	March 31, 2023
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	166,411	$	—	$	—	$	166,411
Corporate Bonds	$	243,163	$	—	$	—	$	243,163
Government Bonds	$	48,774	$	—	$	—	$	48,774
U.S. Treasuries		—		—		—		—
Liabilities
Public Warrants	$	5,576	$	—	$	—	$	5,576
Private Warrants	$	—	$	6,203	$	—	$	6,203

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	165,179	$	—	$	—	$	165,179
Corporate Bonds	$	227,957	$	—	$	—	$	227,957
Government Bonds	$	42,865	$	—	$	—	$	42,865
U.S. Treasuries		9,930		—		—		9,930
Liabilities
Public Warrants	$	4,900	$	—	$	—	$	4,900
Private Warrants	$	—	$	4,217	$	—	$	4,217

The change in fair value of the Company’s marketable securities is included in other comprehensive loss. There were no transfers in and out of Level 3 fair value hierarchy during the three months ended March 31, 2023 and year ended December 31, 2022. For the three months ended March 31, 2023 the Company purchased $110,636 of marketable securities.

Fair Value of Common Stock Warrant Liabilities

The fair value of the Private Placement Warrant Liabilities (defined below) has been estimated using a Black-Scholes model as of March 31, 2023 and December 31, 2022 Consolidated Balance Sheet dates. The fair value of the Public Warrants (defined below) has been measured based on the quoted price of such warrants on the Nasdaq Stock Market, a Level 1 input. The estimated fair value of the Private Placement Warrants is determined using Level 2 inputs. Inherent in a Black-Scholes model are assumptions related to expected stock-price volatility, expected life, risk-free interest rate and dividend yield. Material increases (or decreases) in any of those inputs may result in a significantly higher (or lower) fair value measurement. The Company estimates the volatility of its Private Placement Warrants based on implied volatility from the Company’s Public Warrants and from historical volatility of select peer company’s common stock that matches the expected remaining life of the warrants. The risk-free interest rate is based on the U.S.

Treasury zero-coupon yield curve for a maturity similar to the expected remaining life of the warrants. The expected life of the warrants is assumed to be equivalent to their remaining contractual term. The dividend yield is based on the historical rate, which the Company anticipates remaining at zero. The following table provides quantitative information regarding Level 2 inputs used in the recurring valuation of the Private Placement Warrants as of their measurement dates:

	March 31, 2023			December 31, 2022
Exercise Price	$	11.50		$	11.50
Stock Price	$	3.01		$	2.54
Volatility		79.0	%		71.3	%
Term		3.69			3.94
Risk-free rate		3.67	%		4.03	%

The following table provides a reconciliation of the Public Warrants measured at fair value using Level 1 directly observable inputs and Private Placement Warrants measured at fair value using Level 2 directly or indirectly observable inputs:

	Public Warrants		Private Warrants
	Level 1 Fair Value		Level 2 Fair Value
December 31, 2022	$	0.42	$	0.55
Change in fair value	$	0.04	$	0.31
March 31, 2023	$	0.46	$	0.86

The following tables provides a reconciliation of the March 31, 2023 three month change in fair value for the Public Warrants and Private Placement Warrants:

					Three months change in
Warrant Class	Level	Warrants	December 31, 2022		fair value		March 31, 2023
Public Warrants	1	12,120,985	$	4,900	$	676	$	5,576
Private Warrants	2	7,212,318	$	4,217	$	1,986	$	6,203
Total		19,333,303	$	9,117	$	2,662	$	11,779

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Common Stock Warrant Liabilities

3 Months Ended

Mar. 31, 2023

Common Stock Warrant Liabilities

Common Stock Warrant Liabilities

Note 6 – Common Stock Warrant Liabilities

As of March 31, 2023 and December 31, 2022, there were 12,120,985 and 11,666,636 publicly traded warrants (“Public Warrants”) and 7,212,318 and 7,666,667 private placement warrants (“Private Placement Warrants,” and together with the Public Warrants, “Warrants”) outstanding, respectively. Each whole Warrant entitles the holder thereof to purchase one share of Common Stock at a price of $11.50 per share, subject to customary adjustments. Only whole Warrants are exercisable. The Warrants became exercisable on January 7, 2022 and will expire on December 8, 2026.

None of the Private Placement Warrants are redeemable by the Company so long as they are held by the initial purchasers of the Private Placement Warrants or their permitted transferees.

The Warrant Liabilities were initially measured at fair value upon closing of the transactions contemplated by the Business Combination Agreement and Plan of Reorganization, dated June 15, 2021 by and among the Company, DCRC Merger Sub, Inc., and Solid Power Operating, Inc., as amended (“Business Combination”), for $101,253 and subsequently re-measured at each reporting period. The Public Warrants were allocated a portion of the proceeds from the issuance of the units of common stock and one-third warrants in DCRC’s initial public offering equal to their fair value. The Company recognized a loss and gain in connection with changes in the fair value of warrant liabilities of $2,662 and $710 for the three months ending March 31, 2023 and 2022, respectively.

There have been no significant changes to our Public or Private Placement Warrants, including redemption terms disclosed in our 2022 Form 10-K.

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Stockholders' Equity

3 Months Ended

Mar. 31, 2023

Stockholders' Equity

Stockholders' Equity

Note 7 – Stockholders’ Equity

Common Stock

Stock options exercised for Common Stock are summarized in the table below:

	Three months ended March 31,
	2023	2022
Stock options exercised	1,679,954	6,212,964

Cash received from options exercised under the Solid Power, Inc. 2014 Equity Incentive Plan (the “2014 Plan”) for the three months ended March 31, 2023 and 2022 was $150 and $270, respectively.

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Stock Based Compensation

3 Months Ended

Mar. 31, 2023

Stock Based Compensation

Stock Based Compensation

Note 8 – Stock Based Compensation

There have been no significant changes to our equity incentive plans, Employee Stock Purchase Plan, or accounting methodology for stock based compensation, as disclosed in our 2022 Form 10-K.

The fair value of stock options and Restricted Stock Units (“RSUs”) issued to employees and directors is recognized as compensation expense over the period of service that generally coincides with the vesting period of the award. The Company allocated compensation ratably across Operating Expenses within the following financial statement lines. When calculating the amount of annual compensation expense, the Company has elected not to estimate forfeitures and instead accounts for forfeitures as they occur.

For the three months ended March 31, 2023, the Company recognized compensation costs totaling:

	Three months ended March 31,
	2023		2022
Equity-based compensation costs related to RSUs	$	635	$	—
Equity-based compensation costs related to stock options		1,587		1,596
Total equity-based compensation costs	$	2,222	$	1,596
Unrecognized future compensation cost		59,945		21,455

The following table summarizes our award activity for stock options and RSUs for the three months ended March 31, 2023:

	RSUs	Stock Options
Balance at December 31, 2022	1,057,980		25,998,172
Granted	1,797,034		3,272,873
Vested or Exercised	—		(1,679,954)
Forfeited	(88,441)		(1,494,020)
Outstanding at March 31, 2023	2,766,573		26,097,071

Stock Options

The fair value of each option grant during the three months ended March 31, 2023 and 2022 was estimated on the grant date using the Black-Scholes option pricing model with the following weighted-average assumptions used:

	Three months ended March 31,
	2023			2022
Approximate risk‑free rate		4.28	%		1.02	%
Volatility		46.86	%		59.97	%
Average expected life (years)		6 years			6 years
Dividend yield		—	%		—	%
Weighted‑average grant date fair value	$	3.11		$	0.95
Estimated fair value of total options granted	$	5,165		$	31

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Loss Per Share

3 Months Ended

Mar. 31, 2023

Loss Per Share

Loss Per Share

Note 9 –Loss Per Share

Basic loss per share represents net loss attributable to common stock divided by the basic weighted average number of common stock outstanding during the period.

Due to the net loss for the three months ended March 31, 2023 and 2022, diluted loss per share was computed without consideration to potentially dilutive instruments as their inclusion would have been anti-dilutive. Warrants outstanding in 2023 and 2022 were not included in the computation of diluted earnings per share because the Warrant’s exercise price for the period was greater than the average market price of the common stock.

The table below sets forth the basic and diluted loss per share calculation for the three months ended March 31, 2023 and 2022.

	Three Months Ended March 31,
	2023		2022
Net loss attributable to common stockholders	$	(19,158)	$	(10,344)
Weighted average shares outstanding – basic and diluted		176,934,261		172,395,717
Basic and diluted loss per share	$	(0.11)	$	(0.06)

As of the three months ended March 31, 2023 and 2022, potentially dilutive securities excluded from the diluted loss per share calculation are as follows (in shares):

	Three Months Ended March 31,
	2023	2022
Common Stock Warrants	19,333,303	19,333,303
2014 & 2021 Equity Incentive Plan - Stock Options	25,352,980	27,837,492
2021 Equity Incentive Plan - Restricted Stock Units	1,764,062	—
2021 Employee Stock Purchase Plan	90,314	—
Contingently Issuable Common Stock	49,834	—
Total potentially dilutive securities	46,590,493	47,170,795

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Leases

3 Months Ended

Mar. 31, 2023

Leases

Leases

Note 10 – Leases

The Company leases its two facilities and certain equipment. Fixed rent generally escalates each year, and the Company is responsible for a portion of the landlords’ operating expenses such as property tax, insurance and common area maintenance.

The Company’s facility in Louisville, Colorado, is under a noncancelable operating lease with a maturity date in September 2029. In 2022, the Company amended the lease to incorporate a prior subleased space into the base lease and extend the term of the lease. The Company has the right to renew this lease for an additional five-year period.

On September 1, 2021, the Company entered into an industrial operating lease agreement for its facility in Thornton, Colorado, with the initial term through March 31, 2029. Under this operating lease, the Company has one option to renew for five years, which has been included in the calculation of lease liabilities and right-of-use assets at the adoption date of the lease accounting standard on January 1, 2022, as the exercise of the option was reasonably certain. As the renewal rent has not been negotiated, the Company used an estimated rent rate which approximated the fair market rent at adoption of ASC 842 on January 1, 2022 for the extension period.

The Company has certain equipment leases classified as finance leases as of March 31, 2023.

The Company’s leases do not have any contingent rent payments and do not contain residual value guarantees.

The components of lease expense are as follows:

	Three Months Ended
	March 31, 2023
Finance lease costs:
Amortization of right-of-use assets	$	44
Interest on lease liabilities		12
Operating lease costs		308
Total lease expense	$	364

The components of cash flow information related to leases are as follows:

	Three Months Ended
	March 31, 2023
Operating outgoing cash flows – finance lease	$	12
Financing outgoing cash flows – finance lease		66
Operating outgoing cash flows – operating lease		283

	March 31, 2023
Finance lease
Weighted-average remaining lease term – finance lease (in years)	3.22
Weighted-average discount rate – finance lease	5.9	%
Operating lease
Weighted-average remaining lease term – operating lease (in years)	9.95
Weighted-average discount rate – operating lease	6.9	%

As of March 31, 2023, future minimum payments during the next five years and thereafter are as follows:

Fiscal year	Finance Lease		Operating Lease
2023 (remaining nine months)	$	236	$	854
2024		315		1,173
2025		200		1,210
2026		101		1,248
2027		37		1,288
2028		16		1,329
Thereafter		—		5,244
Total		905		12,346
Less present value discount		77		3,307
Total lease liabilities	$	828	$	9,039

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Related Party Transactions

3 Months Ended

Mar. 31, 2023

Related Party Transactions

Related Party Transactions

Note 11 – Related Party Transactions

During the three months ended March 31, 2023, the Company recognized $3,000 of revenue and $1,000 of deferred revenue related to the BMW joint development agreement.

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Retirement plans

3 Months Ended

Mar. 31, 2023

Retirement Plans

Retirement Plans

Note 12 – Retirement Plans

The Company sponsors a 401(k) plan for all eligible employees. The plan provides for the Company to make a discretionary matching contribution. Contributions to the plan totaled $180 and $144 for the three months ended March 31, 2023 and 2022, respectively.

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Income Taxes

3 Months Ended

Mar. 31, 2023

Income Taxes

Income Taxes

Note 13 – Income Taxes

The Company’s effective tax rate was 0.0% and 0.21% for the three months ended March 31, 2023 and 2022, respectively. The change in the effective tax rate between periods was due to the Company was being in a full valuation allowance for the three months ended March 31, 2023.

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Contingencies

3 Months Ended

Mar. 31, 2023

Contingencies

Contingencies

Note 14 – Contingencies

In the normal course of business, the Company may be party to litigation from time to time. The Company maintains insurance to cover certain actions and believes that resolution of such litigation will not have a material adverse effect on the Company.

DCRC, the predecessor to the Company, received a demand letter dated August 31, 2021 from counsel purporting to represent a shareholder of DCRC alleging that the proposed vote on the Authorized Share Charter Proposal (the “Proposal”) for the proposed Business Combination with Solid Power Operating, Inc. violated Section 242(b)(2) of the Delaware General Corporation

law and demanded that DCRC provide DCRC’s Class A stockholders with a separate class vote on the Proposal. DCRC subsequently provided for the Class A stockholders to have a separate class vote on the Proposal share increase. The Proposal was approved and the Business Combination closed. The counsel who issued this demand letter made a fee demand (the “Fee Demand”) for prompting the change in the Proposal. The Company accrued a liability of $500 on its Consolidated Balance Sheets as of December 31, 2021 in anticipation of settling the Fee Demand. On March 10, 2022, the Company settled the Fee Demand for an amount that is materially consistent with the Company’s accrual.

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Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2023

Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements of the Company have been prepared on the basis of generally accepted accounting principles in the United States (“GAAP”). The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from those estimates. All dollar amounts presented herein are in U.S. dollars and are in thousands, except par value, share and per share amounts.

The accompanying unaudited condensed consolidated financial statements include accounts of the Company and its wholly owned subsidiary, Solid Power Operating, Inc. All intercompany balances and transactions have been eliminated in consolidation. Additionally, certain prior period amounts have been reclassified to conform to current period presentation in the accompanying unaudited Condensed Consolidated financial statements.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

Leases

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), followed by other related ASUs that provided targeted improvements and additional practical expedient options. On January 1, 2022, the Company adopted the standards under Topic 842 using the modified retrospective method and elected a number of the practical expedients in its implementation of Topic 842. The key change that affected the Company relates to accounting for operating leases for which it is the lessee that were historically off-balance sheet.

Financial Instruments

In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This guidance introduces a new model for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. ASU 2016-13 also provides updated guidance regarding the impairment of available-for-sale debt securities and includes additional disclosure requirements. The Company adopted this guidance as of January 1, 2022.

The Company regularly reviews its available-for-sale marketable securities and evaluates the current expected credit losses by considering factors such as any changes in credit ratings, historical experience, market data, issuer-specific factors, and current economic conditions. Based on this analysis, any allowance for credit losses is immaterial and would be recorded as a reduction to the carrying value of the asset.

The Company reviews its receivable aging on an individual customer level, considering collectability of cash flows based on the risk of past events, current conditions, and forward-looking information. The Company establishes allowances for bad debts equal to the estimable portions of accounts receivable for which failure to collect is expected to occur. Allowances for doubtful accounts are recorded as reductions to the carrying values of the related receivables. To date, the Company has not recorded an allowance for doubtful accounts.

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Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2023

Property, Plant and Equipment

Schedule of Property, Plant and Equipment

	March 31, 2023		December 31, 2022
Commercial production equipment	$	23,631	$	21,595
Laboratory equipment		4,916		3,278
Leasehold improvements		38,253		27,996
Furniture and computer equipment		1,483		1,482
Construction in progress		33,494		40,036
Total cost		101,777		94,387
Accumulated depreciation		(13,886)		(11,626)
Net property and equipment	$	87,891	$	82,761

Schedule of depreciation and amortization expense

	Three Months Ended March 31,
	2023		2022
Depreciation expense	$	2,259	$	751

Schedule of construction in progress

	March 31, 2023		December 31, 2022
Construction in progress
Louisville, Colorado - 2nd cell pilot line	$	2,010	$	2,010
Louisville, Colorado - Other capital projects		2,431		2,206
Thornton, Colorado - Increased electrolyte production scale		29,053		35,820

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Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2023

Intangible Assets

Schedule of intangible assets

	March 31, 2023				December 31, 2022
	Gross Carrying		Accumulated		Gross Carrying		Accumulated
	Amount		Amortization		Amount		Amortization
Intangible assets:
Licenses	$	149	$	(54)	$	149	$	(51)
Patents		72		(2)		—		—
Patents pending		1,038		—		984		—
Trademarks		9		—		9		—
Trademarks pending		17		—		17		—
Total amortized intangible assets	$	1,285	$	(56)	$	1,159	$	(51)

Schedule of amortization expense for intangible assets

	Three Months Ended March 31,
	2023		2022
Amortization expense	$	5	$	2

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Measurements

Schedule of financial liabilities measured and recorded at fair value on a recurring basis

	March 31, 2023
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	166,411	$	—	$	—	$	166,411
Corporate Bonds	$	243,163	$	—	$	—	$	243,163
Government Bonds	$	48,774	$	—	$	—	$	48,774
U.S. Treasuries		—		—		—		—
Liabilities
Public Warrants	$	5,576	$	—	$	—	$	5,576
Private Warrants	$	—	$	6,203	$	—	$	6,203

	December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets
Commercial Paper	$	165,179	$	—	$	—	$	165,179
Corporate Bonds	$	227,957	$	—	$	—	$	227,957
Government Bonds	$	42,865	$	—	$	—	$	42,865
U.S. Treasuries		9,930		—		—		9,930
Liabilities
Public Warrants	$	4,900	$	—	$	—	$	4,900
Private Warrants	$	—	$	4,217	$	—	$	4,217

Schedule of Level 2 inputs used in the recurring valuation of the Private Placement Warrants

	March 31, 2023			December 31, 2022
Exercise Price	$	11.50		$	11.50
Stock Price	$	3.01		$	2.54
Volatility		79.0	%		71.3	%
Term		3.69			3.94
Risk-free rate		3.67	%		4.03	%

Schedule of reconciliation of the warrants measured at fair value

	Public Warrants		Private Warrants
	Level 1 Fair Value		Level 2 Fair Value
December 31, 2022	$	0.42	$	0.55
Change in fair value	$	0.04	$	0.31
March 31, 2023	$	0.46	$	0.86

Schedule of change in fair value for the Public Warrants and Private Placement Warrants

					Three months change in
Warrant Class	Level	Warrants	December 31, 2022		fair value		March 31, 2023
Public Warrants	1	12,120,985	$	4,900	$	676	$	5,576
Private Warrants	2	7,212,318	$	4,217	$	1,986	$	6,203
Total		19,333,303	$	9,117	$	2,662	$	11,779

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2023

Stockholders' Equity

Schedule of Stock options exercised

	Three months ended March 31,
	2023	2022
Stock options exercised	1,679,954	6,212,964

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Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Stock Based Compensation

Schedule of compensation costs

	Three months ended March 31,
	2023		2022
Equity-based compensation costs related to RSUs	$	635	$	—
Equity-based compensation costs related to stock options		1,587		1,596
Total equity-based compensation costs	$	2,222	$	1,596
Unrecognized future compensation cost		59,945		21,455

Schedule of award activity for stock options and RSU's

The following table summarizes our award activity for stock options and RSUs for the three months ended March 31, 2023:

	RSUs	Stock Options
Balance at December 31, 2022	1,057,980		25,998,172
Granted	1,797,034		3,272,873
Vested or Exercised	—		(1,679,954)
Forfeited	(88,441)		(1,494,020)
Outstanding at March 31, 2023	2,766,573		26,097,071

Schedule of fair value of each option using the Black-Scholes option pricing model

	Three months ended March 31,
	2023			2022
Approximate risk‑free rate		4.28	%		1.02	%
Volatility		46.86	%		59.97	%
Average expected life (years)		6 years			6 years
Dividend yield		—	%		—	%
Weighted‑average grant date fair value	$	3.11		$	0.95
Estimated fair value of total options granted	$	5,165		$	31

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Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2023

Loss Per Share

Schedule of reconciliation of basic weighted average common shares outstanding to diluted weighted average shares outstanding

	Three Months Ended March 31,
	2023		2022
Net loss attributable to common stockholders	$	(19,158)	$	(10,344)
Weighted average shares outstanding – basic and diluted		176,934,261		172,395,717
Basic and diluted loss per share	$	(0.11)	$	(0.06)

Schedule of potentially dilutive securities excluded from the diluted loss per share calculation

	Three Months Ended March 31,
	2023	2022
Common Stock Warrants	19,333,303	19,333,303
2014 & 2021 Equity Incentive Plan - Stock Options	25,352,980	27,837,492
2021 Equity Incentive Plan - Restricted Stock Units	1,764,062	—
2021 Employee Stock Purchase Plan	90,314	—
Contingently Issuable Common Stock	49,834	—
Total potentially dilutive securities	46,590,493	47,170,795

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Leases (Tables)

3 Months Ended

Mar. 31, 2023

Leases

Schedule of components of lease related expense

	Three Months Ended
	March 31, 2023
Finance lease costs:
Amortization of right-of-use assets	$	44
Interest on lease liabilities		12
Operating lease costs		308
Total lease expense	$	364

Schedule of components of cash flow information related to leases

	Three Months Ended
	March 31, 2023
Operating outgoing cash flows – finance lease	$	12
Financing outgoing cash flows – finance lease		66
Operating outgoing cash flows – operating lease		283

Schedule of remaining weighted-average lease term and weighted-average discount rate

	March 31, 2023
Finance lease
Weighted-average remaining lease term – finance lease (in years)	3.22
Weighted-average discount rate – finance lease	5.9	%
Operating lease
Weighted-average remaining lease term – operating lease (in years)	9.95
Weighted-average discount rate – operating lease	6.9	%

Schedule of future minimum payments under finance lease

As of March 31, 2023, future minimum payments during the next five years and thereafter are as follows:

Fiscal year	Finance Lease		Operating Lease
2023 (remaining nine months)	$	236	$	854
2024		315		1,173
2025		200		1,210
2026		101		1,248
2027		37		1,288
2028		16		1,329
Thereafter		—		5,244
Total		905		12,346
Less present value discount		77		3,307
Total lease liabilities	$	828	$	9,039

Schedule of future minimum payments under operating lease

Fiscal year	Finance Lease		Operating Lease
2023 (remaining nine months)	$	236	$	854
2024		315		1,173
2025		200		1,210
2026		101		1,248
2027		37		1,288
2028		16		1,329
Thereafter		—		5,244
Total		905		12,346
Less present value discount		77		3,307
Total lease liabilities	$	828	$	9,039

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Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment
Gross property and equipment	$ 101,777	$ 94,387
Accumulated depreciation	(13,886)	(11,626)
Net property and equipment	87,891	82,761
Commercial production equipment
Property, Plant and Equipment
Gross property and equipment	23,631	21,595
Laboratory equipment
Property, Plant and Equipment
Gross property and equipment	4,916	3,278
Leasehold improvements
Property, Plant and Equipment
Gross property and equipment	38,253	27,996
Furniture and computer equipment
Property, Plant and Equipment
Gross property and equipment	1,483	1,482
Construction in progress
Property, Plant and Equipment
Gross property and equipment	$ 33,494	$ 40,036

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Property, Plant and Equipment - Depreciation expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Property, Plant and Equipment
Depreciation and amortization expense	$ 2,264	$ 753
Property, Plant and Equipment
Property, Plant and Equipment
Depreciation and amortization expense	$ 2,259	$ 751

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Property, Plant and Equipment - Construction in progress (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Louisville, Colorado - 2nd cell pilot line
Property, Plant and Equipment
Construction in progress	$ 2,010	$ 2,010
Louisville, Colorado - Other capital projects
Property, Plant and Equipment
Construction in progress	2,431	2,206
Thornton, Colorado - Increased electrolyte production scale
Property, Plant and Equipment
Construction in progress	$ 29,053	$ 35,820

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Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Intangible assets:
Gross Carrying Amount	$ 1,285	$ 1,159
Accumulated Amortization	$ (56)	(51)
Minimum
Intangible assets:
Estimated useful life of intangible assets	3 years
Maximum
Intangible assets:
Estimated useful life of intangible assets	20 years
Licenses
Intangible assets:
Gross Carrying Amount	$ 149	149
Accumulated Amortization	(54)	(51)
Patents
Intangible assets:
Gross Carrying Amount	72
Accumulated Amortization	(2)
Patents pending
Intangible assets:
Gross Carrying Amount	1,038	984
Trademarks
Intangible assets:
Gross Carrying Amount	9	9
Trademarks pending
Intangible assets:
Gross Carrying Amount	$ 17	$ 17

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Intangible Assets - Amortization expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Intangible Assets
Amortization expense	$ 5	$ 2

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Fair Value Measurements - Liabilities Measured and Recorded at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Liabilities
Purchase of marketable securities	$ 110,636
Recurring | Public Warrants
Liabilities
Liabilities	5,576	$ 4,900
Recurring | Private Placement Warrants
Liabilities
Liabilities	6,203	4,217
Recurring | Commercial Paper
Assets
Assets	166,411	165,179
Recurring | Corporate Bonds
Assets
Assets	243,163	227,957
Recurring | Government Bonds
Assets
Assets	48,774	42,865
Recurring | U.S Treasuries
Assets
Assets		9,930
Recurring | Level 1 | Public Warrants
Liabilities
Liabilities	5,576	4,900
Recurring | Level 1 | Commercial Paper
Assets
Assets	166,411	165,179
Recurring | Level 1 | Corporate Bonds
Assets
Assets	243,163	227,957
Recurring | Level 1 | Government Bonds
Assets
Assets	48,774	42,865
Recurring | Level 1 | U.S Treasuries
Assets
Assets		9,930
Recurring | Level 2 | Private Placement Warrants
Liabilities
Liabilities	6,203	4,217
Recurring | Level 3
Liabilities
Transfers in or out of Level 3	$ 0	$ 0

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Fair Value Measurements - Measurement inputs (Details) - Recurring - Level 2 - Private Placement Warrants	Mar. 31, 2023 $ / shares Y	Dec. 31, 2022 Y $ / shares
Exercise Price
Fair Value Measurements
Measurement input, warrants	11.50	11.50
Stock Price
Fair Value Measurements
Measurement input, warrants	3.01	2.54
Volatility
Fair Value Measurements
Measurement input, warrants	79.0	71.3
Term
Fair Value Measurements
Measurement input, warrants | Y	3.69	3.94
Risk-free rate
Fair Value Measurements
Measurement input, warrants	3.67	4.03

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Fair Value Measurements - Public Warrants measured at fair value using Level 1 directly observable inputs and Private Placement Warrants (Details) - Fair Value, Recurring - $ / shares	Mar. 31, 2023	Dec. 31, 2022
Public Warrants | Level 1
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Beginning balance, per share	$ 0.46	$ 0.42
Change in fair value	0.04
Ending balance, per share	0.46	0.42
Private Placement Warrants | Level 2
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Beginning balance, per share	0.86	0.55
Change in fair value	0.31
Ending balance, per share	$ 0.86	$ 0.55

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Fair Value Measurements - Fair value for the Public Warrants and Private Placement Warrants (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Recurring
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Number of warrants outstanding	19,333,303
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Balance at the beginning	$ 9,117
Change in fair value	2,662
Balance at the end	$ 11,779
Public Warrants
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Number of warrants outstanding	12,120,985	11,666,636
Public Warrants | Fair Value, Recurring | Level 1
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Number of warrants outstanding	12,120,985
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Balance at the beginning	$ 4,900
Change in fair value	676
Balance at the end	$ 5,576
Private Placement Warrants
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Number of warrants outstanding	7,212,318	7,666,667
Private Placement Warrants | Fair Value, Recurring | Level 2
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Number of warrants outstanding	7,212,318
Fair value, liabilities measured on recurring basis, unobservable input reconciliation
Balance at the beginning	$ 4,217
Change in fair value	1,986
Balance at the end	$ 6,203

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Common Stock Warrant Liabilities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Common Stock Warrant Liabilities
Change in fair value of warrant liabilities	$ 2,662	$ (710)
Warrants
Common Stock Warrant Liabilities
Warrants to purchase common stock	1
Exercise price of warrants	$ 11.50
Fair value, measurement with unobservable inputs reconciliation, recurring basis, liability value	$ 101,253
Public Warrants
Common Stock Warrant Liabilities
Number of warrants outstanding	12,120,985		11,666,636
Private Placement Warrants
Common Stock Warrant Liabilities
Number of warrants outstanding	7,212,318		7,666,667

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Stockholders' Equity - Stock options exercised (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Common Stock
Stockholders' Equity
Stock options exercised	1,679,954	6,212,964

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Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Stockholders' Equity
Cash received from options exercised under all share-based payment arrangements	$ 150	$ 270
Equity incentive, 2014 Plan
Stockholders' Equity
Cash received from options exercised under all share-based payment arrangements	$ 150	$ 270

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Stock Based Compensation - Compensation costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Compensation costs
Total equity-based compensation costs	$ 2,222	$ 1,596
Unrecognized future compensation cost	59,945	21,455
Restricted Stock Units
Compensation costs
Total equity-based compensation costs	635
Stock Options
Compensation costs
Total equity-based compensation costs	$ 1,587	$ 1,596

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Stock Based Compensation - Stock options and Restricted stock units (Details)	3 Months Ended
	Mar. 31, 2023 shares
Restricted Stock Units
Restricted Stock Units.
Outstanding at the beginning	1,057,980
Granted	1,797,034
Forfeited	(88,441)
Outstanding at the end	2,766,573
Stock Options
Number of Shares
Options outstanding, beginning balance	25,998,172
Granted	3,272,873
Vested or Exercised	(1,679,954)
Forfeited	(1,494,020)
Options outstanding, ending balance	26,097,071

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Stock Based Compensation - Fair value of options granted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Stock Based Compensation
Approximate risk-free rate	4.28%	1.02%
Volatility	46.86%	59.97%
Average expected life (years)	6 years	6 years
Weighted-average grant date fair value	$ 3.11	$ 0.95
Estimated fair value of total options granted	$ 5,165	$ 31

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Loss Per Share - Schedule of reconciliation of basic weighted average common shares outstanding to diluted weighted average shares outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Loss Per Share
Net loss attributable to common stockholders	$ (19,158)	$ (10,344)
Weighted average shares outstanding - Basic	176,934,261	172,395,717
Weighted average shares outstanding - Diluted	176,934,261	172,395,717
Basic (loss) per share	$ (0.11)	$ (0.06)
Diluted (loss) per share	$ (0.11)	$ (0.06)

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Loss Per Share - Schedule of potentially dilutive securities excluded from the diluted loss per share calculation (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Potentially dilutive securities excluded from the diluted loss per share calculation
Total potentially dilutive securities	46,590,493	47,170,795
Common Stock Warrants
Potentially dilutive securities excluded from the diluted loss per share calculation
Total potentially dilutive securities	19,333,303	19,333,303
Equity Incentive2014 And2021 Plan Member
Potentially dilutive securities excluded from the diluted loss per share calculation
Total potentially dilutive securities	25,352,980	27,837,492
2021 Equity Incentive Plan
Potentially dilutive securities excluded from the diluted loss per share calculation
Total potentially dilutive securities	1,764,062
Employee Stock Purchase Plan2021 Member
Potentially dilutive securities excluded from the diluted loss per share calculation
Total potentially dilutive securities	90,314
Contingently Issuable Common Stock Member
Potentially dilutive securities excluded from the diluted loss per share calculation
Total potentially dilutive securities	49,834

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Leases - Components of lease (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Sep. 01, 2021
Leases
Operating lease renewal term (in years)		5 years	5 years
Lease costs
Finance lease costs, amortization of right-of-use assets	$ 44
Finance lease costs, interest on lease liabilities	12
Operating lease costs	308
Total lease expense	$ 364

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Leases - Components of cash flow information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Leases
Operating outgoing cash flows - finance lease	$ 12
Financing outgoing cash flows - finance lease	66
Operating outgoing cash flows - operating lease	$ 283

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Leases - Lease term and discount rate (Details)	Mar. 31, 2023
Leases
Weighted-average remaining lease term - finance lease (in years)	3 years 2 months 19 days
Weighted-average discount rate - finance lease	5.90%
Weighted-average remaining lease term - operating lease (in years)	9 years 11 months 12 days
Weighted-average discount rate - operating lease	6.90%

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Leases - Schedule of future minimum payments (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Finance Lease
2023 (remaining nine months)	$ 236
2024	315
2025	200
2026	101
2027	37
2028	16
Total	905
Less present value discount	77
Total lease liabilities	828
Operating Lease
2023 (remaining nine months)	854
2024	1,173
2025	1,210
2026	1,248
2027	1,288
2028	1,329
Thereafter	5,244
Total	12,346
Less present value discount	3,307
Total lease liabilities	$ 9,039

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Related Party Transaction (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Deferred revenue	$ 1,036	$ 4,050	$ 500
Bmw Of North America Llc Member
Defined Benefit Plan Disclosure [Line Items]
Revenue from Related Parties	3,000
Deferred revenue	$ 1,000

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Retirement Plans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Retirement Plans
Contributions to the plan	$ 180	$ 144

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Income Taxes (Details)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Taxes
Effective tax rate	0.00%	0.21%

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Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Contingencies
Deferred revenue	$ 1,036	$ 4,050	$ 500