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Accumulated Depreciation and Amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Initial estimated financial commitment Equity Method Investment, Initial Financial Commitment Equity Method Investment, Initial Financial Commitment Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] General and administrative expense General and Administrative Expense [Member] Grant Expense, Net Grant Income and Grant Expense Disclosure [Text Block] Grant Income and Grant Expense Disclosure Batteries Batteries [Member] Batteries Expected life (years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Total current liabilities Total current liabilities Liabilities, Current Class of Stock [Domain] Class of Stock [Domain] Temporary Equity [Line Items] Temporary Equity [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Loan commitment on the consolidated balance sheet Financing Receivable, before Allowance for Credit Loss Contingent liability, earnout period, threshold consecutive trading days Derivative Instrument, Contingent Consideration, Liability, Earnout Period, Threshold Consecutive Trading Days Derivative Instrument, Contingent Consideration, Liability, Earnout Period, Threshold Consecutive Trading Days Remainder of 2021 Capital Leases, Future Minimum Payments, Remainder of Fiscal Year Document Information [Line Items] Document Information [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Title of 12(b) Security Title of 12(b) Security Statement [Table] Statement [Table] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Unrecognized stock compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Accounts payable and accrued expenses-related parties Increase (Decrease) in Due to Related Parties, Current Vendor deposits Deposits Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Subsequent event Subsequent Event [Member] Cover [Abstract] Derivative Instrument, Contingent Consideration, Liability, Earnout Period, Stock Price Trigger Derivative Instrument, Contingent Consideration, Liability, Earnout Period, Stock Price Trigger Derivative Instrument, Contingent Consideration, Liability, Earnout Period, Stock Price Trigger Security deposits Deposits Assets, Noncurrent Intangible assets, net Total Finite-Lived Intangible Assets, Net Vendor deposits Increase (Decrease) In Current Deposits Assets Increase (Decrease) In Current Deposits Assets Cost of goods sold Cost of Sales [Member] Future Minimum Lease Commitments for Capital Leases Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] Capital Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Adjustment to reconcile net loss to net cash used in operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Contingent consideration, equity, earnout period, threshold trading days Business Combination, Contingent Consideration, Equity, Earnout Period, Threshold Trading Days Business Combination, Contingent Consideration, Equity, Earnout Period, Threshold Trading Days Related Party Transactions Related Party Transactions Disclosure [Text Block] Rent expense Operating Leases, Rent Expense Issuance price of EES Preferred Units to the Holders (in usd per share) Temporary Equity, Stock Issued During the Period, Value Per Share, New Issues Temporary Equity, Stock Issued During the Period, Value Per Share, New Issues Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Convertible Notes Payable Long-term Debt Long-term Debt [Text Block] Annual cost escalations, percentage Lessee, Operating Lease, Annual Cost Escalations, Percentage Lessee, Operating Lease, Annual Cost Escalations, Percentage