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CONSOLIDATED BALANCE SHEETS
Dec. 31, 2019
USD ($)
Current assets:  
Cash $ 12,889,000
Prepaid expenses 868,000
Total current assets 28,798,000
Total assets 188,047,000
Current liabilities:  
Accounts payable 12,691,000
Accounts payable - related party 190,000
Accrued expenses 7,307,000
Note payable 24,102,000
Total current liabilities 109,348,000
Total liabilities 212,579,000
Commitments and Contingencies (Note 18)
Convertible preferred stock, $0.00001 par value; 409,351,021 and 321,346,716 shares authorized as of December 31, 2020 and 2019, respectively; 175,437,783 and 191,139,933 shares issued and outstanding as of December 31, 2020 and 2019, respectively; (liquidation preference of $257,947 and $258,041 as of December 31, 2020 and 2019, respectively) 231,129,000
Stockholders' Equity:  
Additional paid-in capital 3,339,000
Accumulated deficit (259,054,000)
Total stockholders' deficit (255,661,000)
Total liabilities, convertible preferred stock and stockholders' deficit 188,047,000
Star Peak Energy Transition Corp [Member]  
Current assets:  
Prepaid expenses 1,594
Total current assets 1,594
Deferred offering costs associated with initial public offering 251,424
Total assets 253,018
Current liabilities:  
Accounts payable 35,093
Accrued expenses 154,174
Note payable 57,301
Total current liabilities 246,568
Total liabilities 246,568
Commitments and Contingencies (Note 18)
Stockholders' Equity:  
Preferred stock, $0.0001 par value 1,000,000 shares authorized none issued and outstanding
Additional paid-in capital 23,994
Accumulated deficit (18,550)
Total stockholders' deficit 6,450
Total liabilities, convertible preferred stock and stockholders' deficit 253,018
Common Class B | Star Peak Energy Transition Corp [Member]  
Stockholders' Equity:  
Common stock 1,006
Total stockholders' deficit $ 1,006