CONSOLIDATED BALANCE SHEETS $ in Thousands	Dec. 31, 2019 USD ($)
Current assets:
Cash and cash equivalents	$ 139,496
Restricted cash	54,813
Accounts receivable	25,768
Inventory	72,391
Prepaid expenses and other current assets	21,192
Total current assets	313,660
Restricted cash	175,191
Property, plant, and equipment, net	14,959
Right of use assets related to finance leases, net	1,714
Right of use assets related to operating leases, net	63,266
Equipment related to power purchase agreements and fuel delivered to customers, net	67,769
Goodwill	8,842
Intangible assets, net	5,539
Other assets	8,573
Total assets	659,513
Current liabilities:
Accounts payable	40,376
Accrued expenses	14,409
Deferred revenue.	11,691
Operating lease liabilities	9,428
Finance lease liabilities	226
Finance obligations	24,667
Current portion of long-term debt	26,461
Other current liabilities	6,704
Total current liabilities	133,962
Deferred revenue	23,170
Operating lease liabilities	50,937
Finance lease liabilities	2,011
Finance obligations	119,422
Convertible senior notes, net	110,431
Long-term debt	85,708
Other liabilities	2,818
Total liabilities	528,459
Stockholders' equity:
Common stock, $0.01 par value per share; 750,000,000 shares authorized; Issued: 473,977,469 at December 31, 2020 and 318,637,560 at December 31, 2019	3,186
Additional paid-in capital	1,506,953
Accumulated other comprehensive income	1,288
Accumulated deficit	(1,350,307)
Less common stock in treasury: 15,926,068 at December 31, 2020 and 15,259,045 at December 31, 2019	(31,216)
Total stockholders' equity	129,904
Total liabilities, redeemable preferred stock, and stockholders' equity	659,513
Series C Redeemable Convertible Preferred Stock
Redeemable preferred stock:
Preferred stock	709
Series E Convertible Preferred Stock
Redeemable preferred stock:
Preferred stock	$ 441