$FCEL
FUELCELL ENERGY INC Stock $fcel

$fcel Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-K Financial Statement

#000155837024016497 Filed on December 27, 2024

Income Statement

Concept	2024 Q4	2024	2023 Q4
Revenue		$112.1M	$22.46M
YoY Change		-9.13%	-42.7%
Cost Of Revenue		$148.1M	$23.93M
YoY Change		10.54%	-56.01%
Gross Profit		-$35.92M	-$1.464M
YoY Change		240.94%	-90.36%
Gross Profit Margin		-32.03%	-6.52%
Selling, General & Admin		$64.60M	$16.89M
YoY Change		0.12%	10.67%
% of Gross Profit
Research & Development		$55.40M	$18.02M
YoY Change		-9.21%	47.56%
% of Gross Profit
Depreciation & Amortization		$36.19M	$6.715M
YoY Change		42.63%	36.9%
% of Gross Profit
Operating Expenses		$122.6M	$34.91M
YoY Change		-2.37%	27.06%
Operating Profit		-$158.5M	-$36.38M
YoY Change		16.46%	-14.74%
Interest Expense		$9.690M	$2.410M
YoY Change		33.71%	-247.22%
% of Operating Profit
Other Income/Expense, Net		-$2.295M	$4.508M
YoY Change		-148.58%	72.13%
Pretax Income		-$156.8M	-$29.46M
YoY Change		45.85%	-29.33%
Income Tax		$30.00K	$0.00
% Of Pretax Income
Net Earnings		-$126.0M	-$31.16M
YoY Change		17.14%	-26.62%
Net Earnings / Revenue		-112.38%	-138.74%
Basic Earnings Per Share		-$7.83
Diluted Earnings Per Share		-$7.83	-$0.07
COMMON SHARES
Basic Shares Outstanding	20.45M	16.51M	451.8M
Diluted Shares Outstanding		16.51M

Balance Sheet

Concept	2024 Q4	2023 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments		$353.7M
YoY Change		-22.78%
Cash & Equivalents	$148.1M	$250.0M
Short-Term Investments		$103.8M
Other Short-Term Assets	$12.74M	$12.88M
YoY Change	-1.13%	17.22%
Inventory	$113.7M	$84.46M
Prepaid Expenses
Receivables	$11.75M	$3.809M
Other Receivables		$0.00
Total Short-Term Assets	$444.5M	$476.3M
YoY Change	-6.69%	-17.92%
LONG-TERM ASSETS
Property, Plant & Equipment	$130.7M	$89.67M
YoY Change	45.74%	54.24%
Goodwill	$4.075M	$4.075M
YoY Change	0.0%	0.0%
Intangibles	$14.78M	$16.08M
YoY Change	-8.07%	-7.47%
Long-Term Investments
YoY Change
Other Assets	$48.54M	$51.18M
YoY Change	-5.15%	274.59%
Total Long-Term Assets	$499.7M	$479.2M
YoY Change	4.27%	33.32%
TOTAL ASSETS
Total Short-Term Assets	$444.5M	$476.3M
Total Long-Term Assets	$499.7M	$479.2M
Total Assets	$944.1M	$955.5M
YoY Change	-1.19%	1.68%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$22.59M	$26.52M
YoY Change	-14.83%	-5.95%
Accrued Expenses	$30.36M	$26.31M
YoY Change	15.39%	-4.02%
Deferred Revenue	$4.226M	$2.406M
YoY Change	75.64%	-85.28%
Short-Term Debt		$0.00
YoY Change
Long-Term Debt Due		$10.07M
YoY Change		-23.72%
Total Short-Term Liabilities	$73.90M	$65.90M
YoY Change	12.14%	-23.19%
LONG-TERM LIABILITIES
Long-Term Debt		$109.4M
YoY Change		58.15%
Other Long-Term Liabilities	$130.9M	$119.6M
YoY Change	9.42%	44.32%
Total Long-Term Liabilities	$130.9M	$119.6M
YoY Change	9.42%	44.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$73.90M	$65.90M
Total Long-Term Liabilities	$130.9M	$119.6M
Total Liabilities	$216.7M	$195.2M
YoY Change	10.98%	5.33%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.642B	-$1.516B
YoY Change	8.31%	7.64%
Common Stock	$2.300B	$2.200B
YoY Change	4.56%	5.04%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$656.9M	$682.5M
YoY Change
Total Liabilities & Shareholders Equity	$944.1M	$955.5M
YoY Change	-1.19%	1.68%

Cashflow Statement

Concept	2024	2023 Q4
OPERATING ACTIVITIES
Net Income	-$126.0M	-$31.16M
YoY Change	17.14%	-26.62%
Depreciation, Depletion And Amortization	$36.19M	$6.715M
YoY Change	42.63%	36.9%
Cash From Operating Activities	-$152.9M	-$15.83M
YoY Change	9.02%	-34.26%
INVESTING ACTIVITIES
Capital Expenditures		$328.0M
YoY Change		-4675.4%
Acquisitions
YoY Change
Other Investing Activities		$274.1M
YoY Change
Cash From Investing Activities	-$60.05M	-$53.88M
YoY Change	-68.78%	651.6%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$11.70M
YoY Change	-75.54%
Cash From Financing Activities	122.2M	32.91M
YoY Change	-19.14%	-1.06%
NET CHANGE
Cash From Operating Activities	-152.9M	-15.83M
Cash From Investing Activities	-60.05M	-53.88M
Cash From Financing Activities	122.2M	32.91M
Net Change In Cash	-90.69M	-36.80M
YoY Change	-50.02%	-1928.02%
FREE CASH FLOW
Cash From Operating Activities	-$152.9M	-$15.83M
Capital Expenditures		$328.0M
Free Cash Flow		-$343.8M
YoY Change		1932.97%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2024	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16505257
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	13991593
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	12771305
CY2024Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherLiabilitiesNoncurrent
CY2024	dei	Entity Central Index Key EntityCentralIndexKey	0000886128
CY2024	dei	Amendment Flag AmendmentFlag	false
CY2024	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--10-31
CY2024	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
CY2024	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023Q4	us-gaap	Derivative Liability Noncurrent Statement Of Financial Position Extensible Enumeration DerivativeLiabilityNoncurrentStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2024#OtherLiabilitiesNoncurrent
CY2024Q4	us-gaap	Derivative Liability Noncurrent Statement Of Financial Position Extensible Enumeration DerivativeLiabilityNoncurrentStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2024#OtherLiabilitiesNoncurrent
CY2024Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	20375932
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	15020872
CY2024	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.83
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.92
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-11.43
CY2024Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherLiabilitiesNoncurrent
CY2023Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherLiabilitiesNoncurrent
CY2024	dei	Document Type DocumentType	10-K
CY2024	dei	Document Annual Report DocumentAnnualReport	true
CY2024	dei	Document Period End Date DocumentPeriodEndDate	2024-10-31
CY2024	dei	Document Transition Report DocumentTransitionReport	false
CY2024	dei	Entity File Number EntityFileNumber	1-14204
CY2024	dei	Entity Registrant Name EntityRegistrantName	FUELCELL ENERGY, INC.
CY2024	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2024	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	06-0853042
CY2024	dei	Entity Address Address Line1 EntityAddressAddressLine1	3 Great Pasture Road
CY2024	dei	Entity Address City Or Town EntityAddressCityOrTown	Danbury
CY2024	dei	Entity Address State Or Province EntityAddressStateOrProvince	CT
CY2024	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	06810
CY2024	dei	City Area Code CityAreaCode	203
CY2024	dei	Local Phone Number LocalPhoneNumber	825-6000
CY2024	dei	Security12b Title Security12bTitle	Common Stock, $0.0001 par value per share
CY2024	dei	Trading Symbol TradingSymbol	FCEL
CY2024	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2024	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2024	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2024	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2024	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2024	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2024	dei	Entity Small Business EntitySmallBusiness	false
CY2024	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2024	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2024	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2024	dei	Entity Shell Company EntityShellCompany	false
CY2024Q2	dei	Entity Public Float EntityPublicFloat	424996599
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	20449715
CY2024	dei	Auditor Firm AuditorFirmId	185
CY2024	dei	Auditor Name AuditorName	KPMG LLP
CY2024	dei	Auditor Location AuditorLocation	Philadelphia, Pennsylvania
CY2024Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148133000
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	249952000
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	12161000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	5159000
CY2024Q4	us-gaap	Short Term Investments ShortTermInvestments	109123000
CY2023Q4	us-gaap	Short Term Investments ShortTermInvestments	103760000
CY2024Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	11751000
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	3809000
CY2024Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	36851000
CY2023Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	16296000
CY2024Q4	us-gaap	Inventory Net InventoryNet	113703000
CY2023Q4	us-gaap	Inventory Net InventoryNet	84456000
CY2024Q4	us-gaap	Other Assets Current OtherAssetsCurrent	12736000
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	12881000
CY2024Q4	us-gaap	Assets Current AssetsCurrent	444458000
CY2023Q4	us-gaap	Assets Current AssetsCurrent	476313000
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	48589000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	44465000
CY2024Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	2743000
CY2023Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	7329000
CY2024Q4	fcel	Long Term Project Assets LongTermProjectAssets	242131000
CY2023Q4	fcel	Long Term Project Assets LongTermProjectAssets	258066000
CY2024Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	130686000
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89668000
CY2024Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8122000
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8352000
CY2024Q4	us-gaap	Goodwill Goodwill	4075000
CY2023Q4	us-gaap	Goodwill Goodwill	4075000
CY2024Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	14779000
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	16076000
CY2024Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	48541000
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	51176000
CY2024Q4	us-gaap	Assets Assets	944124000
CY2023Q4	us-gaap	Assets Assets	955520000
CY2024Q4	us-gaap	Debt Current DebtCurrent	15924000
CY2023Q4	us-gaap	Debt Current DebtCurrent	10067000
CY2024Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	807000
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	599000
CY2024Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	22585000
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	26518000
CY2024Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	30362000
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	26313000
CY2024Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	4226000
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	2406000
CY2024Q4	us-gaap	Liabilities Current LiabilitiesCurrent	73904000
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	65903000
CY2024Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	3010000
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	732000
CY2024Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8894000
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8992000
CY2024Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	130850000
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	119588000
CY2024Q4	us-gaap	Liabilities Liabilities	216658000
CY2023Q4	us-gaap	Liabilities Liabilities	195215000
CY2024Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	59857000
CY2023Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Parent TemporaryEquityCarryingAmountAttributableToParent	59857000
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000
CY2024Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000
CY2024Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	20375932
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	15020872
CY2024Q4	us-gaap	Common Stock Value CommonStockValue	2000
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	2000
CY2024Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2300031000
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2199704000
CY2024Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1641550000
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-1515541000
CY2024Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1561000
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1672000
CY2024Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	12543
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	8216
CY2024Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	1198000
CY2023Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	1078000
CY2024Q4	us-gaap	Treasury Stock Deferred Employee Stock Ownership Plan TreasuryStockDeferredEmployeeStockOwnershipPlan	1198000
CY2023Q4	us-gaap	Treasury Stock Deferred Employee Stock Ownership Plan TreasuryStockDeferredEmployeeStockOwnershipPlan	1078000
CY2024Q4	us-gaap	Stockholders Equity StockholdersEquity	656922000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	682493000
CY2024Q4	us-gaap	Minority Interest MinorityInterest	10687000
CY2023Q4	us-gaap	Minority Interest MinorityInterest	17955000
CY2024Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	667609000
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	700448000
CY2024Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	944124000
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	955520000
CY2024	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	112132000
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	123394000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	130484000
CY2024	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	148050000
CY2023	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	133929000
CY2022	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	160059000
CY2024	fcel	Gross Profit Loss GrossProfitLoss	-35918000
CY2023	fcel	Gross Profit Loss GrossProfitLoss	-10535000
CY2022	fcel	Gross Profit Loss GrossProfitLoss	-29575000
CY2024	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	64604000
CY2023	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	64528000
CY2022	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	79620000
CY2024	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	55404000
CY2023	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	61021000
CY2022	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	34529000
CY2024	us-gaap	Restructuring Costs RestructuringCosts	2562000
CY2024	us-gaap	Operating Expenses OperatingExpenses	122570000
CY2023	us-gaap	Operating Expenses OperatingExpenses	125549000
CY2022	us-gaap	Operating Expenses OperatingExpenses	114149000
CY2024	us-gaap	Operating Income Loss OperatingIncomeLoss	-158488000
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	-136084000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	-143724000
CY2024	us-gaap	Interest Expense InterestExpense	9690000
CY2023	us-gaap	Interest Expense InterestExpense	7247000
CY2022	us-gaap	Interest Expense InterestExpense	6394000
CY2024	us-gaap	Investment Income Interest InvestmentIncomeInterest	13720000
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	15795000
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	3386000
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	15337000
CY2024	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2295000
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4724000
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	319000
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-156753000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-107475000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-146413000
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	581000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	819000
CY2024	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-156778000
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-108056000
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-147232000
CY2024	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-30769000
CY2023	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-488000
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-4510000
CY2024	us-gaap	Net Income Loss NetIncomeLoss	-126009000
CY2023	us-gaap	Net Income Loss NetIncomeLoss	-107568000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-142722000
CY2024	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3200000
CY2023	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3200000
CY2022	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3200000
CY2024	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-129209000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-110768000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-145922000
CY2024	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.83
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.92
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-11.43
CY2024	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16505257
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	13991593
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	12771305
CY2024	us-gaap	Profit Loss ProfitLoss	-156778000
CY2023	us-gaap	Profit Loss ProfitLoss	-108056000
CY2022	us-gaap	Profit Loss ProfitLoss	-147232000
CY2024	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	111000
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	80000
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-933000
CY2024	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-156667000
CY2023	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-107976000
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-148165000
CY2024	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-30769000
CY2023	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-488000
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-4510000
CY2024	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-125898000
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-107488000
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-143655000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	642438000
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	183552000
CY2022	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	305000
CY2022	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1840000
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6792000
CY2022	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	3200000
CY2022	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-933000
CY2022	fcel	Noncontrolling Interest Increase From Reclassification NoncontrollingInterestIncreaseFromReclassification	12419000
CY2022	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	496000
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	308000
CY2022	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-147232000
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	691497000
CY2023	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	97439000
CY2023	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	225000
CY2023	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-829000
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11954000
CY2023	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	3200000
CY2023	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	80000
CY2023	fcel	Contributions Received For Sale Of Noncontrolling Interest ContributionsReceivedForSaleOfNoncontrollingInterest	9052000
CY2023	fcel	Noncontrolling Interest Increase From Reclassification NoncontrollingInterestIncreaseFromReclassification	3030000
CY2023	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	744000
CY2023	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-108056000
CY2023Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	700448000
CY2024	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	92555000
CY2024	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	159000
CY2024	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-951000
CY2024	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	11764000
CY2024	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	3200000
CY2024	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	111000
CY2024	fcel	Contributions Received For Sale Of Noncontrolling Interest ContributionsReceivedForSaleOfNoncontrollingInterest	25122000
CY2024	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1621000
CY2024	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-156778000
CY2024Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	667609000
CY2024	us-gaap	Profit Loss ProfitLoss	-156778000
CY2023	us-gaap	Profit Loss ProfitLoss	-108056000
CY2022	us-gaap	Profit Loss ProfitLoss	-147232000
CY2024	us-gaap	Share Based Compensation ShareBasedCompensation	11764000
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	11954000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	6792000
CY2024	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36193000
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	25375000
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21274000
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	15337000
CY2024	fcel	Amortization Of Bond Premium AmortizationOfBondPremium	2182000
CY2023	fcel	Amortization Of Bond Premium AmortizationOfBondPremium	3228000
CY2022	fcel	Amortization Of Bond Premium AmortizationOfBondPremium	4210000
CY2024	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-9940000
CY2023	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	7441000
CY2022	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	779000
CY2024	us-gaap	Operating Lease Expense OperatingLeaseExpense	1404000
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	1486000
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	1521000
CY2024	us-gaap	Operating Lease Payments OperatingLeasePayments	1266000
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	1226000
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	1438000
CY2024	fcel	Impairment Of Property Plant And Equipment And Project Assets ImpairmentOfPropertyPlantAndEquipmentAndProjectAssets	1264000
CY2023	fcel	Impairment Of Property Plant And Equipment And Project Assets ImpairmentOfPropertyPlantAndEquipmentAndProjectAssets	2375000
CY2022	fcel	Impairment Of Property Plant And Equipment And Project Assets ImpairmentOfPropertyPlantAndEquipmentAndProjectAssets	1782000
CY2023	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	57000
CY2022	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-583000
CY2024	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-237000
CY2023	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-456000
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2632000
CY2024	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7942000
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1076000
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-9199000
CY2024	fcel	Increase Decrease In Contract With Customer Unbilled Receivables IncreaseDecreaseInContractWithCustomerUnbilledReceivables	23043000
CY2023	fcel	Increase Decrease In Contract With Customer Unbilled Receivables IncreaseDecreaseInContractWithCustomerUnbilledReceivables	21921000
CY2022	fcel	Increase Decrease In Contract With Customer Unbilled Receivables IncreaseDecreaseInContractWithCustomerUnbilledReceivables	231000
CY2024	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	29247000
CY2023	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4686000
CY2022	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	28058000
CY2024	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5404000
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	13090000
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2092000
CY2024	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-999000
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3001000
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	6332000
CY2024	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	4691000
CY2023	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-4461000
CY2022	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	24616000
CY2024	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	4098000
CY2023	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-22298000
CY2022	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-11278000
CY2024	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-152906000
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-140250000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-112167000
CY2024	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	47721000
CY2023	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	39355000
CY2022	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	21078000
CY2024	fcel	Investment In Long Term Project Assets InvestmentInLongTermProjectAssets	11832000
CY2023	fcel	Investment In Long Term Project Assets InvestmentInLongTermProjectAssets	53007000
CY2022	fcel	Investment In Long Term Project Assets InvestmentInLongTermProjectAssets	25573000
CY2024	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	835240000
CY2023	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	199090000
CY2024	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	835736000
CY2023	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	299093000
CY2024	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-60049000
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-192365000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-46651000
CY2024	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	11699000
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	47830000
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	9544000
CY2024	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	23104000
CY2023	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	100500000
CY2024	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1159000
CY2023	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3469000
CY2024	fcel	Proceeds From Issuance Of Common Stock Issued For Stock Plans And Related Expenses ProceedsFromIssuanceOfCommonStockIssuedForStockPlansAndRelatedExpenses	120000
CY2023	fcel	Proceeds From Issuance Of Common Stock Issued For Stock Plans And Related Expenses ProceedsFromIssuanceOfCommonStockIssuedForStockPlansAndRelatedExpenses	56000
CY2022	fcel	Proceeds From Issuance Of Common Stock Issued For Stock Plans And Related Expenses ProceedsFromIssuanceOfCommonStockIssuedForStockPlansAndRelatedExpenses	47000
CY2024	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	25122000
CY2023	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	9052000
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	11923000
CY2024	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	1621000
CY2023	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	596000
CY2022	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	308000
CY2024	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1071000
CY2023	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	885000
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1887000
CY2024	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	92555000
CY2023	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	97439000
CY2022	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	183552000
CY2024	fcel	Payment Of Preferred Dividends And Return Of Capital PaymentOfPreferredDividendsAndReturnOfCapital	3200000
CY2023	fcel	Payment Of Preferred Dividends And Return Of Capital PaymentOfPreferredDividendsAndReturnOfCapital	3200000
CY2022	fcel	Payment Of Preferred Dividends And Return Of Capital PaymentOfPreferredDividendsAndReturnOfCapital	3200000
CY2024	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	122151000
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	151067000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	180583000
CY2024	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	111000
CY2023	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	80000
CY2022	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-933000
CY2024	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-90693000
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-181468000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	20832000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	299576000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	481044000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	460212000
CY2024Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	208883000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	299576000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	481044000
CY2024Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148133000
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	249952000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	458055000
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	12161000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	5159000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	4423000
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	48589000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	44465000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	18566000
CY2024Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	208883000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	299576000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	481044000
CY2024Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	148100000
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	250000000
CY2023Q4	fcel	Number Of Fuel Cell Power Plants Tax Equity Financing Transaction NumberOfFuelCellPowerPlantsTaxEquityFinancingTransaction	2
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0
CY2024Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	0
CY2022	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0
CY2023	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0
CY2024	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0
CY2024	fcel	Percentage Of Electricity Output Provided To Customers PercentageOfElectricityOutputProvidedToCustomers	1
CY2024	us-gaap	Revenue Recognition Leases RevenueRecognitionLeases	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:italic;margin:0pt 0pt 12pt 0pt;"><i style="text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Sale-Leaseback Accounting</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt 0pt 12pt 0pt;">The Company, through certain wholly-owned subsidiaries, has entered into sale-leaseback transactions for commissioned project assets where we have entered into a PPA with a customer who is both the site host and end user of the power. Due to the Company not meeting criteria to account for the transfer of the project assets as a sale since the leases include a repurchase right, sale accounting is precluded. Accordingly, the Company uses the financing method to account for these transactions.</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt;">Under the financing method of accounting for a sale-leaseback, the Company does not derecognize the project assets and does not recognize as revenue any of the sale proceeds received from the lessor that contractually constitutes payment to acquire the assets subject to these arrangements. Instead, the sale proceeds received are accounted for as finance obligations and leaseback payments made by the Company are allocated between interest expense and a reduction to the finance obligation. Interest on the finance obligation is calculated using the Company’s incremental borrowing rate at the inception of the arrangement on the outstanding finance obligation. While we receive financing for the related project asset, we have not recognized revenue on the sale-leaseback transactions. Instead, revenue is recognized with respect to the related PPAs in accordance with the Company’s accounting policies for recognizing generation revenue.</p>
CY2024	us-gaap	Extended Product Warranty Description ExtendedProductWarrantyDescription	We warranty our products for a specific period of time against manufacturing or performance defects. Our U.S. warranty is generally limited to a term of 15 months after shipment or 12 months after acceptance of our products.
CY2024	fcel	Extended Product Warranty Period After Shipment ExtendedProductWarrantyPeriodAfterShipment	P15M
CY2024	fcel	Extended Product Warranty Period After Acceptance Of Products ExtendedProductWarrantyPeriodAfterAcceptanceOfProducts	P12M
CY2024	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;font-style:italic;margin:0pt 0pt 12pt 0pt;"><i style="text-decoration-color:#000000;text-decoration-line:underline;text-decoration-style:solid;">Use of Estimates</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt 0pt 12pt 0pt;">The preparation of financial statements and related disclosures in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities. Estimates are used in accounting for, among other things, revenue recognition, lease right-of-use assets and liabilities, excess, slow-moving and obsolete inventories, product warranty accruals, loss accruals on service agreements, share-based compensation expense, allowance for doubtful accounts, depreciation and amortization, impairment of goodwill and in-process research and development intangible assets, impairment of long-lived assets (including project assets), valuation of derivatives and contingencies. Estimates and assumptions are reviewed periodically, and the effects of revisions are reflected in the consolidated financial statements in the period they are determined to be necessary. Due to the inherent uncertainty involved in making estimates, actual results in future periods may differ from those estimates.</p>
CY2024Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	65100000
CY2024Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	28300000
CY2023Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	42100000
CY2023Q4	us-gaap	Contract With Customer Asset Net Noncurrent ContractWithCustomerAssetNetNoncurrent	25800000
CY2024	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	16000000
CY2023	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	12900000
CY2024Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	7200000
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	3100000
CY2023Q4	us-gaap	Contract With Customer Refund Liability ContractWithCustomerRefundLiability	6300000
CY2023Q4	us-gaap	Contract With Customer Refund Liability Noncurrent ContractWithCustomerRefundLiabilityNoncurrent	6000000
CY2023	fcel	Proceeds From Sale Of Investment Tax Credit ProceedsFromSaleOfInvestmentTaxCredit	6300000
CY2024Q2	fcel	Contract With Customer Unbilled Long Term Service Agreement ContractWithCustomerUnbilledLongTermServiceAgreement	159600000
CY2024Q2	fcel	Contract With Customer Unbilled Long Term Service Agreement ContractWithCustomerUnbilledLongTermServiceAgreement	159600000
CY2024Q3	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated Inception To Date Percent RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDatePercent	0.04
CY2024	us-gaap	Restructuring Costs RestructuringCosts	2600000
CY2024	us-gaap	Payments For Restructuring PaymentsForRestructuring	300000
CY2024Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	35989000
CY2023Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	36200000
CY2024Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	80457000
CY2023Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	55585000
CY2024Q4	fcel	Inventory Current And Non Current InventoryCurrentAndNonCurrent	116446000
CY2023Q4	fcel	Inventory Current And Non Current InventoryCurrentAndNonCurrent	91785000
CY2024Q4	us-gaap	Inventory Net InventoryNet	113703000
CY2023Q4	us-gaap	Inventory Net InventoryNet	84456000
CY2024Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	2743000
CY2023Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	7329000
CY2024Q4	fcel	Project Asset Accumulated Depreciation ProjectAssetAccumulatedDepreciation	66542000
CY2023Q4	fcel	Project Asset Accumulated Depreciation ProjectAssetAccumulatedDepreciation	46263000
CY2024Q4	fcel	Long Term Project Assets LongTermProjectAssets	242131000
CY2023Q4	fcel	Long Term Project Assets LongTermProjectAssets	258066000
CY2024	fcel	Number Of Project Assets NumberOfProjectAssets	12
CY2023	fcel	Number Of Project Assets NumberOfProjectAssets	9
CY2024Q4	fcel	Long Term Project Assets Construction In Progress LongTermProjectAssetsConstructionInProgress	200000
CY2023Q4	fcel	Long Term Project Assets Construction In Progress LongTermProjectAssetsConstructionInProgress	90600000
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2400000
CY2024	fcel	Depreciation Expense On Project Assets DepreciationExpenseOnProjectAssets	26900000
CY2023	fcel	Depreciation Expense On Project Assets DepreciationExpenseOnProjectAssets	19000000
CY2022	fcel	Depreciation Expense On Project Assets DepreciationExpenseOnProjectAssets	14200000
CY2024Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	245386000
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	197669000
CY2024Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	114700000
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	108001000
CY2024Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	130686000
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89668000
CY2022	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	1000000
CY2023	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0
CY2024	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	0
CY2024	us-gaap	Depreciation Depreciation	8000000
CY2023	us-gaap	Depreciation Depreciation	5100000
CY2022	us-gaap	Depreciation Depreciation	5800000
CY2024	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0
CY2023	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0
CY2024	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0
CY2024Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	21912000
CY2024Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	7133000
CY2024Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14779000
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	21912000
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5836000
CY2023Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	16076000
CY2024	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1300000
CY2024Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	9808000
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	7752000
CY2024Q4	fcel	Accrued Performance Obligation AccruedPerformanceObligation	2515000
CY2023Q4	fcel	Accrued Performance Obligation AccruedPerformanceObligation	3958000
CY2024Q4	fcel	Accrued Service And Performance AccruedServiceAndPerformance	10574000
CY2023Q4	fcel	Accrued Service And Performance AccruedServiceAndPerformance	10742000
CY2024Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	5230000
CY2023Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3861000
CY2024Q4	us-gaap	Restructuring Reserve Current RestructuringReserveCurrent	2235000
CY2024Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	30362000
CY2023Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	26313000
CY2024Q4	fcel	Loss Reserve On Service Agreements LossReserveOnServiceAgreements	9000000
CY2023Q4	fcel	Loss Reserve On Service Agreements LossReserveOnServiceAgreements	9500000
CY2023Q4	fcel	Reserve For Performance Guarantees ReserveForPerformanceGuarantees	1200000
CY2024Q4	fcel	Reserve For Performance Guarantees ReserveForPerformanceGuarantees	1500000
CY2024	us-gaap	Operating Lease Expense OperatingLeaseExpense	1400000
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	1500000
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	1500000
CY2024Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P16Y
CY2024Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.069
CY2024	us-gaap	Operating Lease Payments OperatingLeasePayments	1300000
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	1200000
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	1400000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1361000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	1374000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1407000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1375000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	795000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	11923000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	18235000
CY2024Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	8534000
CY2024Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	9701000
CY2023Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	12000
CY2024Q4	us-gaap	Line Of Credit LineOfCredit	70067000
CY2023Q4	us-gaap	Line Of Credit LineOfCredit	77510000
CY2024Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	4215000
CY2023Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	3526000
CY2024Q4	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	131662000
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Including Current Maturities LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities	119467000
CY2024Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	15924000
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	10067000
CY2024Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	115738000
CY2023Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	109400000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations Repayments Of Principal In Next Twelve Months LongTermDebtAndFinanceLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths	14440000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations Maturities Repayments Of Principal In Year Two LongTermDebtAndFinanceLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo	14759000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations Maturities Repayments Of Principal In Year Three LongTermDebtAndFinanceLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree	10930000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations Maturities Repayments Of Principal In Year Four LongTermDebtAndFinanceLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour	12237000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations Maturities Repayments Of Principal In Year Five LongTermDebtAndFinanceLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive	11305000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations Maturities Repayments Of Principal After Year Five LongTermDebtAndFinanceLeaseObligationsMaturitiesRepaymentsOfPrincipalAfterYearFive	61659000
CY2024Q4	fcel	Long Term Debt And Finance Lease Obligations And Debt Issuance Costs Including Current Maturities LongTermDebtAndFinanceLeaseObligationsAndDebtIssuanceCostsIncludingCurrentMaturities	125330000
CY2023Q2	fcel	Number Of Leased Projects Ownership Reacquired NumberOfLeasedProjectsOwnershipReacquired	3
CY2023Q2	fcel	Number Of Leased Projects Ownership Reacquired NumberOfLeasedProjectsOwnershipReacquired	3
CY2023Q4	fcel	Incremental Authorized Common Stock Shares Approved IncrementalAuthorizedCommonStockSharesApproved	500000000
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000
CY2024Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2024	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1
CY2024	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	112132000
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	123394000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	130484000
CY2024Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod	0
CY2024	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11471000
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11588000
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	6580000
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber	217947
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	151.89
CY2024	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	76420
CY2024	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	210.12
CY2024	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Forfeitures ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures	47995
CY2024	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	67.96
CY2024Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber	516561
CY2024Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	64.53
CY2024	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	6651
CY2023	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	3454
CY2022	us-gaap	Stock Issued During Period Shares Issued For Services StockIssuedDuringPeriodSharesIssuedForServices	2562
CY2022	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	200000
CY2023	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	200000
CY2024	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	200000
CY2024	fcel	Employer Matching Contribution Percentage EmployerMatchingContributionPercentage	0.02
CY2024	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1300000
CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1100000
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	500000
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-140713000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-95910000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-145439000
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-16040000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-11565000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-974000
CY2024	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-156753000
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-107475000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-146413000
CY2024	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30000.00
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	600000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	800000
CY2024	fcel	Franchise Tax Expense FranchiseTaxExpense	500000
CY2023	fcel	Franchise Tax Expense FranchiseTaxExpense	900000
CY2022	fcel	Franchise Tax Expense FranchiseTaxExpense	1000000
CY2024	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2024	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.044
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.036
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.001
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.005
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.006
CY2024	fcel	Effective Income Tax Rate Reconciliation Net Operating Loss Expiration Impairment And True Ups EffectiveIncomeTaxRateReconciliationNetOperatingLossExpirationImpairmentAndTrueUps	0.011
CY2023	fcel	Effective Income Tax Rate Reconciliation Net Operating Loss Expiration Impairment And True Ups EffectiveIncomeTaxRateReconciliationNetOperatingLossExpirationImpairmentAndTrueUps	-0.061
CY2022	fcel	Effective Income Tax Rate Reconciliation Net Operating Loss Expiration Impairment And True Ups EffectiveIncomeTaxRateReconciliationNetOperatingLossExpirationImpairmentAndTrueUps	-0.087
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.002
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.021
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.014
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	0.004
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.028
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate	-0.003
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.007
CY2024	fcel	Effective Income Tax Rate Reconciliation Deferred Only Adjustment Percent EffectiveIncomeTaxRateReconciliationDeferredOnlyAdjustmentPercent	0.004
CY2023	fcel	Effective Income Tax Rate Reconciliation Deferred Only Adjustment Percent EffectiveIncomeTaxRateReconciliationDeferredOnlyAdjustmentPercent	0.001
CY2022	fcel	Effective Income Tax Rate Reconciliation Deferred Only Adjustment Percent EffectiveIncomeTaxRateReconciliationDeferredOnlyAdjustmentPercent	0.001
CY2024	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.268
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.127
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.136
CY2024	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.001
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.005
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.006
CY2024Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	7344000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	6026000
CY2024Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2695000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	1945000
CY2024Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	16296000
CY2023Q4	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	14701000
CY2024Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	170780000
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	139900000
CY2024Q4	fcel	Deferred Tax Assets Deferred License Revenue DeferredTaxAssetsDeferredLicenseRevenue	871000
CY2023Q4	fcel	Deferred Tax Assets Deferred License Revenue DeferredTaxAssetsDeferredLicenseRevenue	1148000
CY2024Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	15969000
CY2023Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	14051000
CY2024Q4	fcel	Deferred Tax Assets Grant Revenue DeferredTaxAssetsGrantRevenue	210000
CY2023Q4	fcel	Deferred Tax Assets Grant Revenue DeferredTaxAssetsGrantRevenue	323000
CY2024Q4	fcel	Deferred Tax Assets Excess Business Interest DeferredTaxAssetsExcessBusinessInterest	5860000
CY2023Q4	fcel	Deferred Tax Assets Excess Business Interest DeferredTaxAssetsExcessBusinessInterest	6406000
CY2024Q4	fcel	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	1840000
CY2023Q4	fcel	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	1879000
CY2024Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	18305000
CY2023Q4	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	9729000
CY2024Q4	fcel	Deferred Tax Assets Mark To Market DeferredTaxAssetsMarkToMarket	1702000
CY2023Q4	fcel	Deferred Tax Assets Mark To Market DeferredTaxAssetsMarkToMarket	987000
CY2024Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	150000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	4000
CY2024Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	242022000
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	197099000
CY2024Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	228139000
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	193477000
CY2024Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	13883000
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3622000
CY2024Q4	fcel	Deferred Tax Liabilities Net Loss Attributable To Non Controlling Interests DeferredTaxLiabilitiesNetLossAttributableToNonControllingInterests	7567000
CY2024Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Research And Development Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedResearchAndDevelopmentCosts	2322000
CY2023Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Research And Development Costs DeferredTaxLiabilitiesDeferredExpenseCapitalizedResearchAndDevelopmentCosts	2293000
CY2024Q4	fcel	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	1556000
CY2023Q4	fcel	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	1600000
CY2024Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2745000
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	9000
CY2024Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	307000
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	280000
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2024Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2023	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0
CY2024	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0
CY2024	us-gaap	Net Income Loss NetIncomeLoss	-126009000
CY2023	us-gaap	Net Income Loss NetIncomeLoss	-107568000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	-142722000
CY2024	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-129209000
CY2023	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-110768000
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-145922000
CY2024	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16505257
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	13991593
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	12771305
CY2024	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16505257
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	13991593
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	12771305
CY2024	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.83
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.92
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-11.43
CY2024	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.83
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.92
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-11.43
CY2024	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	518396
CY2023	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	219976
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	85965
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	60800000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	49600000
CY2024Q4	fcel	Cash Restricted For Outstanding Letters Of Credit CashRestrictedForOutstandingLettersOfCredit	14152000
CY2023Q4	fcel	Cash Restricted For Outstanding Letters Of Credit CashRestrictedForOutstandingLettersOfCredit	14152000
CY2024Q4	fcel	Cash Restricted For Crestmark Sale Leaseback Transaction CashRestrictedForCrestmarkSaleLeasebackTransaction	2908000
CY2023Q4	fcel	Cash Restricted For Crestmark Sale Leaseback Transaction CashRestrictedForCrestmarkSaleLeasebackTransaction	2901000
CY2024Q4	fcel	Debt Service And Performance Reserves Related To Financing Facility DebtServiceAndPerformanceReservesRelatedToFinancingFacility	24721000
CY2023Q4	fcel	Debt Service And Performance Reserves Related To Financing Facility DebtServiceAndPerformanceReservesRelatedToFinancingFacility	19698000
CY2024Q4	fcel	Debt Service And Performance Reserves Related To Leverage Loan Facilities DebtServiceAndPerformanceReservesRelatedToLeverageLoanFacilities	12869000
CY2023Q4	fcel	Debt Service And Performance Reserves Related To Leverage Loan Facilities DebtServiceAndPerformanceReservesRelatedToLeverageLoanFacilities	9294000
CY2024Q4	fcel	Other Restricted Cash OtherRestrictedCash	6100000
CY2023Q4	fcel	Other Restricted Cash OtherRestrictedCash	3579000
CY2024Q4	us-gaap	Restricted Cash RestrictedCash	60750000
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	49624000
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	12161000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	5159000
CY2024Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	48589000
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	44465000
CY2024	fcel	Derivative Gain Loss Net Settlement DerivativeGainLossNetSettlement	-6900000
CY2023	fcel	Derivative Gain Loss Net Settlement DerivativeGainLossNetSettlement	4100000
CY2024Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1200000
CY2023Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	4100000
CY2024Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	4000000
CY2023Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0
CY2024Q4	us-gaap	Recorded Unconditional Purchase Obligation RecordedUnconditionalPurchaseObligation	90800000
CY2024	us-gaap	Interest Paid Net InterestPaidNet	6796000
CY2023	us-gaap	Interest Paid Net InterestPaidNet	3088000
CY2022	us-gaap	Interest Paid Net InterestPaidNet	1556000
CY2024	us-gaap	Income Taxes Paid IncomeTaxesPaid	16000
CY2023	us-gaap	Income Taxes Paid IncomeTaxesPaid	6000
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	2000
CY2024	fcel	Noncash Reclassification Between Inventory And Project Assets NoncashReclassificationBetweenInventoryAndProjectAssets	4586000
CY2023	fcel	Noncash Reclassification Between Inventory And Project Assets NoncashReclassificationBetweenInventoryAndProjectAssets	1987000
CY2022	fcel	Noncash Reclassification Between Inventory And Project Assets NoncashReclassificationBetweenInventoryAndProjectAssets	1260000
CY2022	fcel	Net Noncash Reclassifications Of Project Assets To Inventory NetNoncashReclassificationsOfProjectAssetsToInventory	1552000
CY2022	fcel	Net Non Cash Reclassifications Of Other Assets To Project Assets NetNonCashReclassificationsOfOtherAssetsToProjectAssets	2375000
CY2024	fcel	Director Stock Compensation DirectorStockCompensation	159000
CY2023	fcel	Director Stock Compensation DirectorStockCompensation	225000
CY2022	fcel	Director Stock Compensation DirectorStockCompensation	305000
CY2023	fcel	Accrued Non Controlling Interest Distribution AccruedNonControllingInterestDistribution	148000
CY2024	fcel	Noncash Addition Of Operating Lease Liabilities NoncashAdditionOfOperatingLeaseLiabilities	395000
CY2023	fcel	Noncash Addition Of Operating Lease Liabilities NoncashAdditionOfOperatingLeaseLiabilities	1952000
CY2024	fcel	Noncash Addition Of Operating Lease Right Of Use Assets NoncashAdditionOfOperatingLeaseRightOfUseAssets	395000
CY2023	fcel	Noncash Addition Of Operating Lease Right Of Use Assets NoncashAdditionOfOperatingLeaseRightOfUseAssets	1952000
CY2023	fcel	Reclassification Between Project Assets And Other Assets ReclassificationBetweenProjectAssetsAndOtherAssets	6330000
CY2024	fcel	Accrued Purchase Of Fixed Assets AccruedPurchaseOfFixedAssets	2958000
CY2023	fcel	Accrued Purchase Of Fixed Assets AccruedPurchaseOfFixedAssets	1646000
CY2022	fcel	Accrued Purchase Of Fixed Assets AccruedPurchaseOfFixedAssets	4396000
CY2024	fcel	Accrued Purchase Of Project Assets AccruedPurchaseOfProjectAssets	269000
CY2023	fcel	Accrued Purchase Of Project Assets AccruedPurchaseOfProjectAssets	4515000
CY2022	fcel	Accrued Purchase Of Project Assets AccruedPurchaseOfProjectAssets	6444000
CY2024Q4	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q4	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q4	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
CY2024	ecd	Insider Trd Policies Proc Adopted Flag InsiderTrdPoliciesProcAdoptedFlag	true

Files In Submission

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fcel-20241031_cal.xml	Edgar Link	unprocessable

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$FCEL
FUELCELL ENERGY INC Stock $fcel

2024 Q4 Form 10-K Financial Statement

#000155837024016497 Filed on December 27, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FCEL FUELCELL ENERGY INC Stock $fcel

2024 Q4 Form 10-K Financial Statement

#000155837024016497 Filed on December 27, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FCEL
FUELCELL ENERGY INC Stock $fcel