$GWH
ESS Tech, Inc. Stock $gwh

$gwh Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000162828024047692 Filed on November 14, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$359.0K
YoY Change		-76.76%
Cost Of Revenue		$12.74M
YoY Change		25.12%
Gross Profit		-$12.38M
YoY Change		43.34%
Gross Profit Margin		-3449.03%
Selling, General & Admin		$8.616M
YoY Change		9.24%
% of Gross Profit
Research & Development		$2.684M
YoY Change		66.81%
% of Gross Profit
Depreciation & Amortization		$700.0K
YoY Change		-36.36%
% of Gross Profit
Operating Expenses		$11.30M
YoY Change		19.0%
Operating Profit		-$23.68M
YoY Change		30.59%
Interest Expense		$807.0K
YoY Change		-46.2%
% of Operating Profit
Other Income/Expense, Net		$1.189M
YoY Change		-21.57%
Pretax Income
YoY Change
Income Tax		$0.00
% Of Pretax Income
Net Earnings		-$22.49M
YoY Change		35.35%
Net Earnings / Revenue		-6265.46%
Basic Earnings Per Share		-$1.90
Diluted Earnings Per Share		-$1.90
COMMON SHARES
Basic Shares Outstanding	11.88M shares	176.8M shares
Diluted Shares Outstanding		11.81M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$12.80M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory		$7.037M
Prepaid Expenses
Receivables		$413.0K
Other Receivables
Total Short-Term Assets		$68.55M
YoY Change		-47.84%
LONG-TERM ASSETS
Property, Plant & Equipment		$19.86M
YoY Change		10.4%
Goodwill
YoY Change
Intangibles		$4.723M
YoY Change		-5.35%
Long-Term Investments
YoY Change
Other Assets		$763.0K
YoY Change		-7.4%
Total Long-Term Assets		$28.14M
YoY Change		3.35%
TOTAL ASSETS
Total Short-Term Assets		$68.55M
Total Long-Term Assets		$28.14M
Total Assets		$96.70M
YoY Change		-39.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable		$10.94M
YoY Change		242.64%
Accrued Expenses
YoY Change
Deferred Revenue		$6.000M
YoY Change		328.57%
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities		$32.08M
YoY Change		72.1%
LONG-TERM LIABILITIES
Long-Term Debt
YoY Change
Other Long-Term Liabilities		$109.0K
YoY Change
Total Long-Term Liabilities		$109.0K
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities		$32.08M
Total Long-Term Liabilities		$109.0K
Total Liabilities		$47.50M
YoY Change		12.55%
SHAREHOLDERS EQUITY
Retained Earnings		-$758.9M
YoY Change		11.6%
Common Stock		$1.000K
YoY Change		-94.44%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity		$49.20M
YoY Change
Total Liabilities & Shareholders Equity		$96.70M
YoY Change		-39.05%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		-$22.49M
YoY Change		35.35%
Depreciation, Depletion And Amortization		$700.0K
YoY Change		-36.36%
Cash From Operating Activities
YoY Change
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities
YoY Change
Cash From Investing Activities
YoY Change
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities
YoY Change
NET CHANGE
Cash From Operating Activities
Cash From Investing Activities
Cash From Financing Activities
Net Change In Cash
YoY Change
FREE CASH FLOW
Cash From Operating Activities
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Document Type DocumentType	10-Q
	dei	Entity File Number EntityFileNumber	001-39525
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Registrant Name EntityRegistrantName	ESS Tech, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-1550150
	dei	Entity Address State Or Province EntityAddressStateOrProvince	OR
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	97070
	dei	City Area Code CityAreaCode	855
	dei	Local Phone Number LocalPhoneNumber	423-9920
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	11882871	shares
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12822000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	20165000	usd
CY2024Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	906000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1373000	usd
CY2024Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	413000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1990000	usd
CY2024Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	42292000	usd
CY2023Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	87899000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	957000	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	359000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1545000	usd
	dei	Entity Address Address Line1 EntityAddressAddressLine1	26440 SW Parkway Ave.
	dei	Entity Address City Or Town EntityAddressCityOrTown	Wilsonville
CY2023Q4	us-gaap	Inventory Net InventoryNet	3366000	usd
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1853000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2167000	usd
CY2024Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	947000	usd
CY2024Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	763000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	833000	usd
CY2024Q3	us-gaap	Assets Assets	96697000	usd
CY2023Q4	us-gaap	Assets Assets	143232000	usd
CY2024Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	10937000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2755000	usd
CY2024Q3	ghw	Accrued Liabilities And Other Current Liabilities AccruedLiabilitiesAndOtherCurrentLiabilities	10178000	usd
CY2023Q4	ghw	Accrued Liabilities And Other Current Liabilities AccruedLiabilitiesAndOtherCurrentLiabilities	10755000	usd
CY2024Q3	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	3298000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2129000	usd
CY2024Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1631000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1581000	usd
CY2024Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	6034000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	2546000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-61448000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-61448000	usd
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.35
	us-gaap	Depreciation Depreciation	3200000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7673000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	38790000	usd
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	7274000	usd
CY2024Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	6087000	usd
CY2023Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	1943403	shares
	ghw	Class Of Warrant Or Right Grants In Period ClassOfWarrantOrRightGrantsInPeriod	0	shares
CY2024Q3	us-gaap	Inventory Net InventoryNet	7037000	usd
CY2024Q3	us-gaap	Liabilities Current LiabilitiesCurrent	32078000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	19766000	usd
CY2024Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	11882581	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11882581	shares
CY2024Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	5084000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	945000	usd
CY2024Q3	us-gaap	Cost Of Revenue CostOfRevenue	12741000	usd
CY2023Q3	us-gaap	Cost Of Revenue CostOfRevenue	10183000	usd
CY2024Q3	us-gaap	Gross Profit GrossProfit	-12382000	usd
CY2024Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	2684000	usd
CY2023Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	1609000	usd
CY2024Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	2529000	usd
CY2023Q3	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	2056000	usd
CY2023Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	5831000	usd
CY2024Q3	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	807000	usd
CY2023Q3	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	1155000	usd
CY2024Q3	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-343000	usd
CY2023Q3	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-344000	usd
CY2024Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	39000	usd
CY2023Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	17000	usd
CY2024Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1189000	usd
CY2023Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1516000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	-16618000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-16618000	usd
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.59
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.59
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11814580	shares
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11814580	shares
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
	dei	Entity Central Index Key EntityCentralIndexKey	0001819438
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Amendment Flag AmendmentFlag	false
CY2024Q3	us-gaap	Stockholders Equity Note Stock Split Conversion Ratio1 StockholdersEquityNoteStockSplitConversionRatio1	0.0667
CY2024Q3	us-gaap	Government Assistance Current Statement Of Financial Position Extensible Enumeration GovernmentAssistanceCurrentStatementOfFinancialPositionExtensibleEnumeration	http://fasb.org/us-gaap/2024#PrepaidExpenseAndOtherAssetsCurrent
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Bldg. 83
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2023Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	3305000	usd
CY2024Q3	us-gaap	Assets Current AssetsCurrent	68554000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	118098000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19857000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	16266000	usd
CY2024Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4723000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4923000	usd
CY2024Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	451000	usd
CY2024Q3	ghw	Common Stock Warrant Liabilities CommonStockWarrantLiabilities	458000	usd
CY2023Q4	ghw	Common Stock Warrant Liabilities CommonStockWarrantLiabilities	917000	usd
CY2024Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	109000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	0	usd
CY2024Q3	us-gaap	Liabilities Liabilities	47496000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	39875000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.0001
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CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	11614127	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	11614127	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	1000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	1000	usd
CY2024Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	808100000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	799513000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-758900000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-696157000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	49201000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	103357000	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	96697000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	143232000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3445000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4744000	usd
	us-gaap	Cost Of Revenue CostOfRevenue	35615000	usd
	us-gaap	Cost Of Revenue CostOfRevenue	10183000	usd
CY2023Q3	us-gaap	Gross Profit GrossProfit	-8638000	usd
	us-gaap	Gross Profit GrossProfit	-32170000	usd
	us-gaap	Gross Profit GrossProfit	-5439000	usd
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	9066000	usd
	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	5648000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	17791000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	16963000	usd
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CY2023Q3	us-gaap	Operating Expenses OperatingExpenses	9496000	usd
	us-gaap	Operating Expenses OperatingExpenses	34131000	usd
	us-gaap	Operating Expenses OperatingExpenses	61401000	usd
CY2024Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-23682000	usd
CY2023Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-18134000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	-66301000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	-66840000	usd
	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	3097000	usd
	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	3737000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-459000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-917000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	738000	usd
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	3558000	usd
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	5392000	usd
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	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-62743000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-62743000	usd
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	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.35
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.93
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.93
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10471738	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10471738	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11722378	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11722378	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10358503	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10358503	shares
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	136974000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	104000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2059000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	-21901000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	117236000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	268000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2725000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	-22929000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	97300000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	31000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2889000	usd
CY2024Q3	ghw	Sale Of Stock Issuance Costs SaleOfStockIssuanceCosts	368000	usd
CY2023Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	32858000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	-16618000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	116460000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	103357000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-81000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2854000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	-18310000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	87820000	usd
CY2024Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	138000	usd
CY2024Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3026000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-21940000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	69044000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-8000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2658000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	-22493000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	49201000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-62743000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-61448000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3302000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	3187000	usd
	ghw	Non Cash Interest Income NonCashInterestIncome	-2094000	usd
	ghw	Non Cash Interest Income NonCashInterestIncome	-2438000	usd
	ghw	Noncash Operating Lease Expense NoncashOperatingLeaseExpense	1000000	usd
	ghw	Noncash Operating Lease Expense NoncashOperatingLeaseExpense	916000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	8538000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	7673000	usd
	us-gaap	Inventory Write Down InventoryWriteDown	5170000	usd
	us-gaap	Inventory Write Down InventoryWriteDown	11422000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-459000	usd
	us-gaap	Fair Value Adjustment Of Warrants FairValueAdjustmentOfWarrants	-917000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-311000	usd
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	34000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1352000	usd
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-3874000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	9768000	usd
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	13132000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1709000	usd
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3701000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5671000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	275000	usd
	ghw	Increase Decrease In Accrued Liabilities And Other Current Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentLiabilities	-219000	usd
	ghw	Increase Decrease In Accrued Liabilities And Other Current Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherCurrentLiabilities	-4305000	usd
	ghw	Increase Decrease In Product Warranty Accrual IncreaseDecreaseInProductWarrantyAccrual	1169000	usd
	ghw	Increase Decrease In Product Warranty Accrual IncreaseDecreaseInProductWarrantyAccrual	993000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-122000	usd
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	12532000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-1142000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-1050000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-51743000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-38751000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3823000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4209000	usd
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-47709000	usd
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-20208000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	43886000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	15999000	usd
	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	usd
	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	27132000	usd
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	usd
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	1733000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	80000	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	236000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	214000	usd
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	332000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	245000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	165000	usd
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	usd
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-214000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	49000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	25588000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-7808000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2836000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	22483000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	36655000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	14675000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	39491000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	1306000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	1246000	usd
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2844000	usd
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	747000	usd
	ghw	Adjustment To Right Of Use Assets From Lease Modification AdjustmentToRightOfUseAssetsFromLeaseModification	686000	usd
	ghw	Adjustment To Right Of Use Assets From Lease Modification AdjustmentToRightOfUseAssetsFromLeaseModification	0	usd
	ghw	Common Stock Warrants Issued For The Acquisition Of Intangibles CommonStockWarrantsIssuedForTheAcquisitionOfIntangibles	0	usd
	ghw	Common Stock Warrants Issued For The Acquisition Of Intangibles CommonStockWarrantsIssuedForTheAcquisitionOfIntangibles	4990000	usd
	ghw	Transfers Between Inventory And Property And Equipment Net TransfersBetweenInventoryAndPropertyAndEquipmentNet	1051000	usd
	ghw	Transfers Between Inventory And Property And Equipment Net TransfersBetweenInventoryAndPropertyAndEquipmentNet	0	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12822000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	37173000	usd
CY2024Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	906000	usd
CY2023Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1373000	usd
CY2024Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	947000	usd
CY2023Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	945000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	14675000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	39491000	usd
	ghw	Battery Flexible Energy Capacity Minimum BatteryFlexibleEnergyCapacityMinimum	12	h
	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:6pt;padding-left:18pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">—Certain immaterial prior year amounts have been reclassified to conform with the current year presentation. These reclassifications had no effect on the reported results of operations.</span></div>
	us-gaap	Net Income Loss NetIncomeLoss	-62700000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-51700000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12800000	usd
CY2024Q3	us-gaap	Trading Securities Debt TradingSecuritiesDebt	42300000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	55100000	usd
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	2000000000	shares
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.0001
CY2024Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	10923000	usd
CY2023Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	7740000	usd
CY2024Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	6108000	usd
CY2023Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	1236000	usd
CY2024Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	6347000	usd
CY2023Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	5685000	usd
CY2024Q3	us-gaap	Inventory Gross InventoryGross	23378000	usd
CY2023Q4	us-gaap	Inventory Gross InventoryGross	14661000	usd
CY2024Q3	us-gaap	Inventory Adjustments InventoryAdjustments	16341000	usd
CY2023Q4	us-gaap	Inventory Adjustments InventoryAdjustments	11295000	usd
CY2024Q3	us-gaap	Inventory Net InventoryNet	7037000	usd
CY2023Q4	us-gaap	Inventory Net InventoryNet	3366000	usd
CY2024Q3	us-gaap	Inventory Adjustments InventoryAdjustments	16300000	usd
CY2023Q4	us-gaap	Inventory Adjustments InventoryAdjustments	11300000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	32241000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	25547000	usd
CY2024Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	12384000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	9281000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19857000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	16266000	usd
CY2024Q3	us-gaap	Depreciation Depreciation	700000	usd
CY2023Q3	us-gaap	Depreciation Depreciation	1100000	usd
	us-gaap	Depreciation Depreciation	3100000	usd
CY2024Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	67000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	200000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	0	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	0	usd
CY2024Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	4685000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5681000	usd
CY2024Q3	ghw	Materials And Related Purchases Current MaterialsAndRelatedPurchasesCurrent	2677000	usd
CY2023Q4	ghw	Materials And Related Purchases Current MaterialsAndRelatedPurchasesCurrent	2083000	usd
CY2024Q3	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	1108000	usd
CY2023Q4	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	802000	usd
CY2024Q3	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	0	usd
CY2023Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	545000	usd
CY2024Q3	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	761000	usd
CY2023Q4	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	637000	usd
CY2024Q3	ghw	Other Accrued Liability And Other Liabilities Current OtherAccruedLiabilityAndOtherLiabilitiesCurrent	947000	usd
CY2023Q4	ghw	Other Accrued Liability And Other Liabilities Current OtherAccruedLiabilityAndOtherLiabilitiesCurrent	1007000	usd
CY2024Q3	ghw	Accrued Liabilities And Other Current Liabilities AccruedLiabilitiesAndOtherCurrentLiabilities	10178000	usd
CY2023Q4	ghw	Accrued Liabilities And Other Current Liabilities AccruedLiabilitiesAndOtherCurrentLiabilities	10755000	usd
CY2024Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	3240000	usd
CY2023Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	5103000	usd
CY2023Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2129000	usd
CY2022Q4	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	1643000	usd
CY2024Q3	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	81000	usd
CY2023Q3	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	231000	usd
	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	2649000	usd
	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	5409000	usd
CY2024Q3	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	28000	usd
CY2023Q3	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	103000	usd
	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	730000	usd
	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	1172000	usd
CY2024Q3	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	5000	usd
CY2023Q3	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-2595000	usd
	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-750000	usd
	us-gaap	Standard Product Warranty Accrual Preexisting Increase Decrease StandardProductWarrantyAccrualPreexistingIncreaseDecrease	-3244000	usd
CY2024Q3	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	3298000	usd
CY2023Q3	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2636000	usd
CY2024Q3	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	3298000	usd
CY2023Q3	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2636000	usd
CY2024Q3	us-gaap	Certificates Of Deposit At Carrying Value CertificatesOfDepositAtCarryingValue	75000	usd
CY2024Q3	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	1943403	shares
CY2023Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	1943403	shares
CY2021Q4	ghw	Class Of Warrant Or Right Conversion Ratio ClassOfWarrantOrRightConversionRatio	1
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	833	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	833	shares
	ghw	Class Of Warrant Or Right Exercises In Period ClassOfWarrantOrRightExercisesInPeriod	0	shares
CY2024Q3	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	1943403	shares
CY2022Q4	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	764914	shares
	ghw	Class Of Warrant Or Right Grants In Period ClassOfWarrantOrRightGrantsInPeriod	1178489	shares
	ghw	Class Of Warrant Or Right Exercises In Period ClassOfWarrantOrRightExercisesInPeriod	0	shares
CY2023Q3	us-gaap	Class Of Warrant Or Right Outstanding ClassOfWarrantOrRightOutstanding	1943403	shares
CY2024Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2658000	usd
CY2023Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2889000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8538000	usd
CY2024Q3	ghw	Share Based Compensation Arrangement By Share Based Payment Awards Potential Increase In Shares Authorized Percentage Of Shares Outstanding ShareBasedCompensationArrangementByShareBasedPaymentAwardsPotentialIncreaseInSharesAuthorizedPercentageOfSharesOutstanding	0.05
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	173226	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.90
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y3M
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1422000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	16119	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	5.01
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	4155	shares
	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	6.92
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	152952	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	21.82
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y2M8D
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	120000	usd
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	118347	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	16.53
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P5Y7M13D
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	1198000	usd
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	129288	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	19.81
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P4Y7M13D
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue	120000	usd
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2023Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2024Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	22000000.0	usd
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y7M28D
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	359000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1545000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	3445000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	4744000	usd
CY2024Q3	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	125000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	253000	usd
CY2024Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	20434000	usd
CY2023Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	20781000	usd
	us-gaap	Increase Decrease In Contract With Customer Asset IncreaseDecreaseInContractWithCustomerAsset	128000	usd
	ghw	Contract With Customer Liability Period Increase Decrease ContractWithCustomerLiabilityPeriodIncreaseDecrease	300000	usd
	ghw	Contract With Customer Liability Advance Payment ContractWithCustomerLiabilityAdvancePayment	700000	usd
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1100000	usd
CY2024Q3	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	6000000.0	usd
CY2024Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	14400000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-22493000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-22493000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-16618000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-16618000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-62743000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-62743000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-61448000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-61448000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11814580	shares
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11814580	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10471738	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10471738	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	11722378	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	11722378	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	10358503	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	10358503	shares
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.90
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.90
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.59
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.59
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.35
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.35
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-5.93
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-5.93
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3304968	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3039700	shares
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false

Files In Submission

Name	View Source	Status
0001628280-24-047692-index-headers.html	Edgar Link	pending
0001628280-24-047692-index.html	Edgar Link	pending
0001628280-24-047692.txt	Edgar Link	pending
0001628280-24-047692-xbrl.zip	Edgar Link	pending
exhibit311-ceocertq32024.htm	Edgar Link	pending
exhibit312-cfocertq32024.htm	Edgar Link	pending
exhibit321-ceocertq32024.htm	Edgar Link	pending
exhibit322-cfocertq32024.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
ghw-20240930.htm	Edgar Link	pending
ghw-20240930.xsd	Edgar Link	pending
ghw-20240930_g1.jpg	Edgar Link	pending
ghw-20240930_cal.xml	Edgar Link	unprocessable
ghw-20240930_def.xml	Edgar Link	unprocessable
ghw-20240930_htm.xml	Edgar Link	completed
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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R55.htm	Edgar Link	pending
ghw-20240930_pre.xml	Edgar Link	unprocessable
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
ghw-20240930_lab.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable

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$GWH
ESS Tech, Inc. Stock $gwh

2024 Q4 Form 10-Q Financial Statement

#000162828024047692 Filed on November 14, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GWH ESS Tech, Inc. Stock $gwh

2024 Q4 Form 10-Q Financial Statement

#000162828024047692 Filed on November 14, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GWH
ESS Tech, Inc. Stock $gwh