Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net loss	$ (4,441,863)	$ (18,262,494)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property, plant and equipment	483,636	679,303
Amortization of customer intangible assets	68,044	93,029
Stock-based compensation, net	2,145,765	1,274,616
Impairment of PPA project costs	0	1,890,357
Equity in loss of investee company	217,898	242,902
Provision for inventory reserve	182,647	(102,651)
Gain on sale of property and equipment	(1,911)	0
Interest accreted on note receivable	(12,000)	(12,033)
Gain on termination of SPI Supply Agreement	(13,290,000)	0
Changes in assets and liabilities
Accounts receivable	(297,273)	(59,540)
Inventories	(794,718)	(569,174)
Prepaids and other current assets	361,405	(154,470)
Costs and estimated earnings in excess of billings	(87,318)	0
Deferred PPA project costs	5,690,307	(7,580,664)
Deferred customer project costs	314,965	(419,765)
Project assets	1,075,882	(1,003,631)
Accounts payable	(82,041)	(487,518)
Billings in excess of costs and estimated earnings	456,950	0
Accrued expenses	198,147	(749,667)
Customer deposits	(110,476)	(975,803)
Accrued compensation and benefits	139,803	21,736
Deferred revenue	422,638	13,290,000
Other long-term liabilities	145,013	0
Net cash used in operating activities	(7,214,500)	(12,885,467)
Cash flows from investing activities
Cash paid for business combination	0	(225,829)
Change in restricted cash	0	60,193
Expenditures for property and equipment	(46,366)	(406,917)
Proceeds from sale of property and equipment	8,432	0
Payments from note receivable	12,000	0
Net cash used in investing activities	(25,934)	(572,553)
Cash flows from financing activities
Payment of financing costs	0	(261,982)
Repayments of long term debt	(332,344)	(319,607)
Proceeds from equipment financing	0	331,827
Payments for finance leases	0	(13,521)
Proceeds from issuance of preferred stock	0	13,300,000
Proceeds from issuance of common stock	2,095,840	6,800,000
Proceeds from the exercise of stock options	69,960	0
Contributions of capital from noncontrolling interest	0	53,614
Net cash provided by financing activities	1,833,456	19,890,331
Effect of exchange rate changes on cash and cash equivalents	851	(683)
Net increase (decrease) in cash and cash equivalents	(5,406,127)	6,431,628
Cash and cash equivalents - beginning of year	17,189,089	10,757,461
Cash and cash equivalents - end of year	11,782,962	17,189,089
Supplemental disclosures of cash flow information:
Cash paid for interest	51,134	47,568
Supplemental noncash information:
Right of use asset obtained in exchange for new operating lease	122,950	41,048
Asset retirement obligation	$ 0	$ 18,527