Balance Sheets (USD $)	Dec. 31, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 12,621,477	$ 11,298,885
Investments	0	12,616,097
Trade receivables, net of allowance for doubtful accounts of $0 and $5,839, respectively	100,164	342,087
Related party receivables and deposits	596,339	0
Inventories	2,159,553	2,469,123
Prepaid expenses and other current assets	235,305	386,624
Total current assets	15,712,838	27,112,816
Property, Plant and Equipment:	39,979,013	36,897,531
Less accumulated depreciation and amortization	(12,725,298)	(7,964,875)
Net property, plant and equipment	27,253,715	28,932,656
Other Assets:
Restricted cash	0	1,427,053
Deposits on manufacturing equipment	0	3,582,883
Patents, net of amortization of $48,150 and $28,248, respectively	500,879	308,785
Other non-current assets	56,563	60,312
Total other assets	557,442	5,379,033
Total Assets	43,523,995	61,424,505
Current Liabilities:
Accounts payable	855,373	658,834
Accrued expenses	1,565,091	1,846,997
Accrued property, plant and equipment	223,544	1,626,317
Current portion of long-term debt	264,935	648,059
Total current liabilities	2,908,943	4,780,207
Long-Term Debt	6,350,135	6,615,070
Accrued Warranty Liability	38,187	26,660
Commitments and Contingencies (Notes 4 & 17)
Stockholders’ Equity:
Preferred stock, $0.0001 par value, 25,000,000 shares authorized, no shares outstanding	0	0
Common stock, $0.0001 par value, 125,000,000 shares authorized; 51,143,906 and 39,345,459 shares issued and outstanding, respectively	5,114	3,935
Additional paid in capital	245,996,950	233,004,550
Deficit accumulated during the development stage	(211,775,334)	(183,006,936)
Accumulated other comprehensive income (loss)	0	1,019
Total stockholders’ equity	34,226,730	50,002,568
Total Liabilities and Stockholders’ Equity	$ 43,523,995	$ 61,424,505