Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Net loss	$ (13,644,601)	$ (12,423,162)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation of property, plant and equipment	379,450	523,441
Amortization of customer intangible assets	68,044	46,206
Stock-based compensation, net	1,554,567	893,739
Equity in (gain) loss of investee company	171,816	170,429
Provision for inventory reserve	234,675	0
Gain on sale of property and equipment	(8,432)	0
Interest accreted on note receivable	(3,008)	(9,041)
Gain on bargain purchase	0	(76,437)
Changes in assets and liabilities
Accounts receivable	(64,632)	75,567
Inventories	(312,715)	(1,010,493)
Prepaids and other current assets	(144,366)	(187,735)
Deferred PPA project costs	5,690,307	(159,978)
Deferred customer project costs	217,217	(1,009,730)
Project assets	782,092	(7,091,533)
Accounts payable	60,895	(470,831)
Accrued expenses	(53,683)	(877,806)
Customer deposits	(96,775)	53,236
Accrued compensation and benefits	29,704	(105,228)
Deferred revenue	422,638	13,290,000
Other long-term liabilities	137,983	0
Net cash provided by (used in) operating activities	(4,578,824)	(8,369,356)
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	(46,364)	(389,266)
Proceeds from sale of property and equipment	15,325	0
Net cash provided by (used in) investing activities	(31,039)	(554,902)
Cash flows from financing activities
Payment of financing costs	0	(261,982)
Repayments of long-term debt	(248,533)	(242,375)
Proceeds from equipment financing	0	331,827
Payments for finance leases	0	(10,077)
Proceeds from issuance of preferred stock	0	13,300,000
Proceeds from issuance of common stock	0	6,800,000
Proceeds from the exercise of stock options	68,400	0
Contributions of capital from noncontrolling interest	0	53,614
Net cash provided by (used in) financing activities	(180,133)	19,971,007
Effect of exchange rate changes on cash and cash equivalents	578	(33)
Net increase (decrease) in cash and cash equivalents	(4,789,418)	11,046,716
Cash and cash equivalents - beginning of period	17,189,089	10,757,461
Cash and cash equivalents - end of period	12,399,671	21,804,177
Supplemental disclosures of cash flow information:
Cash paid for interest	37,612	39,994
Supplemental noncash information:
Right of use asset obtained in exchange for new finance lease	0	13,521
Right of use asset obtained in exchange for new operating lease	178,124	41,048
Asset retirement obligation	$ 19,454	$ 18,527