$TGEN
TECOGEN INC. Stock $tgen

$tgen Overview Financials Valuation SEC Filings Company Website

2021 Form 10-K Financial Statement

#000153743522000014 Filed on March 10, 2022

Income Statement

Concept	2021	2020 Q4	2020
Revenue	$24.40M	$5.657M	$28.25M
YoY Change	-13.65%	-35.06%	-15.47%
Cost Of Revenue	$12.81M	$3.315M	$17.43M
YoY Change	-26.49%	-39.17%	-16.81%
Gross Profit	$11.59M	$2.343M	$10.83M
YoY Change	7.02%	-28.2%	-13.23%
Gross Profit Margin	47.49%	41.41%	38.32%
Selling, General & Admin	$12.27M	$3.237M	$16.79M
YoY Change	-26.92%	-2.67%	-2.04%
% of Gross Profit	105.87%	138.16%	155.05%
Research & Development	$542.1K	$130.0K	$767.3K
YoY Change	-29.35%	-65.49%	-47.45%
% of Gross Profit	4.68%	5.55%	7.09%
Depreciation & Amortization	$469.9K	$120.2K	$414.1K
YoY Change	13.46%	61.87%	-5.26%
% of Gross Profit	4.05%	5.13%	3.82%
Operating Expenses	$12.81M	$3.542M	$16.79M
YoY Change	-23.71%	-4.31%	-9.73%
Operating Profit	-$1.219M	-$1.200M	-$5.960M
YoY Change	-79.55%	173.28%	27.94%
Interest Expense	$14.24K	-$19.17K	$125.8K
YoY Change	-88.68%	-49.76%	23.54%
% of Operating Profit
Other Income/Expense, Net	$4.980M		-$226.7K
YoY Change	-2296.49%
Pretax Income	$3.761M	-$4.155M	-$6.187M
YoY Change	-160.78%	771.37%	29.46%
Income Tax	$19.49K	$2.380K	$30.17K
% Of Pretax Income	0.52%
Net Earnings	$3.696M	-$4.062M	-$6.151M
YoY Change	-160.09%	736.62%	30.61%
Net Earnings / Revenue	15.15%	-71.81%	-21.77%
Basic Earnings Per Share	$0.15		-$0.25
Diluted Earnings Per Share	$0.15	-$163.5K	-$0.25
COMMON SHARES
Basic Shares Outstanding	24.85M shares	24.85M shares	24.85M shares
Diluted Shares Outstanding	25.12M shares		24.85M shares

Balance Sheet

Concept	2021	2020 Q4	2020
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.614M	$1.490M	$1.490M
YoY Change	142.55%	69.79%	69.79%
Cash & Equivalents	$3.614M	$1.490M	$1.490M
Short-Term Investments
Other Short-Term Assets	$578.8K	$597.1K	$597.1K
YoY Change	-3.07%	-5.97%	-5.97%
Inventory	$7.765M	$7.169M	$7.169M
Prepaid Expenses
Receivables	$3.258M	$8.671M	$4.267M
Other Receivables	$9.758M	$8.671M	$8.671M
Total Short-Term Assets	$24.97M	$22.19M	$22.19M
YoY Change	12.53%	-20.48%	-20.48%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.652M	$2.284M	$3.916M
YoY Change	-6.75%	-34.11%	-30.56%
Goodwill		$2.406M
YoY Change		-54.44%
Intangibles		$1.360M
YoY Change		-14.65%
Long-Term Investments
YoY Change
Other Assets	$148.1K	$196.4K	$196.4K
YoY Change	-24.57%	-71.62%	-71.62%
Total Long-Term Assets	$7.387M	$7.879M	$7.879M
YoY Change	-6.24%	-40.34%	-40.34%
TOTAL ASSETS
Total Short-Term Assets	$24.97M	$22.19M	$22.19M
Total Long-Term Assets	$7.387M	$7.879M	$7.879M
Total Assets	$32.36M	$30.07M	$30.07M
YoY Change	7.61%	-26.86%	-26.86%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$3.508M	$4.183M	$4.183M
YoY Change	-16.13%	-20.65%	-20.65%
Accrued Expenses	$2.985M	$1.993M	$2.500M
YoY Change	19.39%	-23.31%	-20.28%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Long-Term Debt Due	$0.00	$837.9K	$837.9K
YoY Change	-100.0%
Total Short-Term Liabilities	$8.781M	$9.171M	$8.815M
YoY Change	-0.39%	-31.79%	-34.44%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$1.036M	$1.036M
YoY Change	-100.0%
Other Long-Term Liabilities	$2.453M	$1.222M	$2.955M
YoY Change	-16.98%	-25.34%	-31.57%
Total Long-Term Liabilities	$2.453M	$1.222M	$3.991M
YoY Change	-38.53%	-25.34%	-7.56%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.781M	$9.171M	$8.815M
Total Long-Term Liabilities	$2.453M	$1.222M	$3.991M
Total Liabilities	$11.15M	$12.81M	$12.76M
YoY Change	-12.61%	-27.91%	-28.49%
SHAREHOLDERS EQUITY
Retained Earnings		-$39.53M
YoY Change		18.43%
Common Stock		$24.85K
YoY Change		0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$21.21M	$17.31M	$17.31M
YoY Change
Total Liabilities & Shareholders Equity	$32.36M	$30.07M	$30.07M
YoY Change	7.61%	-26.86%	-26.86%

Cashflow Statement

Concept	2021	2020 Q4	2020
OPERATING ACTIVITIES
Net Income	$3.696M	-$4.062M	-$6.151M
YoY Change	-160.09%	736.62%	30.61%
Depreciation, Depletion And Amortization	$469.9K	$120.2K	$414.1K
YoY Change	13.46%	61.87%	-5.26%
Cash From Operating Activities	$465.0K	-$6.190K	$1.407M
YoY Change	-66.95%	-99.51%	-131.38%
INVESTING ACTIVITIES
Capital Expenditures	$91.45K	$0.00	$59.95K
YoY Change	52.54%	-100.0%	-37.32%
Acquisitions
YoY Change
Other Investing Activities	-$60.51K	$9.130K	-$34.56K
YoY Change	75.09%	-123.99%	-100.7%
Cash From Investing Activities	-$215.1K	$9.130K	-$217.8K
YoY Change	-1.24%	-108.61%	-104.63%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$1.874M	0.000	-$576.9K
YoY Change	-424.87%	-100.0%	-250.67%
NET CHANGE
Cash From Operating Activities	$465.0K	-6.190K	$1.407M
Cash From Investing Activities	-$215.1K	9.130K	-$217.8K
Cash From Financing Activities	$1.874M	0.000	-$576.9K
Net Change In Cash	$2.124M	2.940K	$612.5K
YoY Change	246.79%	-96.97%	1.23%
FREE CASH FLOW
Cash From Operating Activities	$465.0K	-$6.190K	$1.407M
Capital Expenditures	$91.45K	$0.00	$59.95K
Free Cash Flow	$373.6K	-$6.190K	$1.347M
YoY Change	-72.27%	-99.48%	-129.42%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001537435
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-36103
CY2021	dei	Entity Registrant Name EntityRegistrantName	TECOGEN INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-3536131
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	45 First Avenue
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Waltham
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02451
CY2021	dei	City Area Code CityAreaCode	781
CY2021	dei	Local Phone Number LocalPhoneNumber	466-6400
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	true
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	28812496	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	24850261	shares
CY2021	dei	Auditor Name AuditorName	WOLF & COMPANY, P.C.
CY2021	dei	Auditor Firm AuditorFirmId	392
CY2021	dei	Auditor Location AuditorLocation	Boston, Massachusetts
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3614463	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1490219	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	8482286	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	8671163	USD
CY2021Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	3258189	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	4267249	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	7764989	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	7168596	USD
CY2021Q4	tgen	Employee Retention Credit Current EmployeeRetentionCreditCurrent	1276021	USD
CY2020Q4	tgen	Employee Retention Credit Current EmployeeRetentionCreditCurrent	0	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	578801	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	597144	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	24974749	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	22194371	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1782944	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2283846	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1869210	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1632574	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1181023	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1360319	USD
CY2021Q4	us-gaap	Goodwill Goodwill	2406156	USD
CY2020Q4	us-gaap	Goodwill Goodwill	2406156	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	148140	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	196387	USD
CY2021Q4	us-gaap	Assets Assets	32362222	USD
CY2020Q4	us-gaap	Assets Assets	30073653	USD
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CY2020Q4	us-gaap	Notes Payable Current NotesPayableCurrent	837861	USD
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CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	4183105	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	2343728	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	1993471	USD
CY2021Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1957752	USD
CY2020Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1294157	USD
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	641002	USD
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	506514	USD
CY2021Q4	tgen	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Liabilities Current BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilitiesCurrent	330032	USD
CY2020Q4	tgen	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Liabilities Current BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilitiesCurrent	355665	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	8780868	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	9170773	USD
CY2021Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	208456	USD
CY2020Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	115329	USD
CY2021Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	0	USD
CY2020Q4	us-gaap	Long Term Notes Payable LongTermNotesPayable	1036339	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	24850	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1315275	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1222492	USD
CY2021Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities	929474	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Financial Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFinancialLiabilities	1261386	USD
CY2021Q4	us-gaap	Liabilities Liabilities	11234073	USD
CY2020Q4	us-gaap	Liabilities Liabilities	12806319	USD
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	24850	USD
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	57016859	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	56814428	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-35833621	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-39529621	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	21208088	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	17309657	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	-79939	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	-42323	USD
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CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	24398073	USD
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CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2875711	USD
CY2021	us-gaap	Operating Expenses OperatingExpenses	12806745	USD
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CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2021	tgen	Employee Retention Credit EmployeeRetentionCredit	1276021	USD
CY2020	tgen	Employee Retention Credit EmployeeRetentionCredit	0	USD
CY2021	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	-7400	USD
CY2020	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	-251906	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	10486	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	11367	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	131206	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	656397	USD
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	6046	USD
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2021	us-gaap	Inventory Write Down InventoryWriteDown	0	USD
CY2020	us-gaap	Inventory Write Down InventoryWriteDown	86000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-37497	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-98404	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	202431	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	190944	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2875711	USD
CY2021	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	0	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	51190	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-57618	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-5555235	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	596393	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	849367	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1009060	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1154562	USD
CY2021	tgen	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	-18343	USD
CY2020	tgen	Increase Decrease In Prepaid Expense And Other Current Assets IncreaseDecreaseInPrepaidExpenseAndOtherCurrentAssets	-37889	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	231478	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-825817	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-674750	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1088651	USD
CY2021	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	602073	USD
CY2020	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-524358	USD
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	756722	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-2100011	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	465033	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1407237	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	91451	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	59952	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	10486	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	26335	USD
CY2021	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	63097	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	123252	USD
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	11637	USD
CY2020	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2021	tgen	Payments To Noncontrolling Interests Investing Activities PaymentsToNoncontrollingInterestsInvestingActivities	82633	USD
CY2020	tgen	Payments To Noncontrolling Interests Investing Activities PaymentsToNoncontrollingInterestsInvestingActivities	60896	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-215058	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-217765	USD
CY2021	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	0	USD
CY2020	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-2452329	USD
CY2021	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	1874269	USD
CY2020	us-gaap	Proceeds From Notes Payable ProceedsFromNotesPayable	1874200	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1200	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1874269	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-576929	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2124244	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	612543	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1490219	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	877676	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3614463	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1490219	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	241	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	62013	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	19491	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	30178	USD
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021	us-gaap	Nature Of Operations NatureOfOperations	Nature of business and operationsTecogen Inc. (together with its subsidiaries "we", "our", "us" or "Tecogen"), a Delaware Corporation, was incorporated on November 15, 2000, and acquired the assets and liabilities of the Tecogen Products division of Thermo Power Corporation. We produce commercial and industrial, natural-gas-fueled engine-driven, combined heat and power (CHP) products that reduce energy costs, decrease greenhouse gas emissions and alleviate congestion on the national power grid. Our products supply electric power or mechanical power for cooling, while heat from the engine is recovered and purposefully used at a facility. The majority of our customers are located in regions with the highest utility rates, typically California, the Midwest and the Northeast.Our operations are comprised of three business segments. Our Products segment designs, manufactures and sells industrial and commercial cogeneration systems as described above. Our Services segment provides operation and maintenance services to customers for our products. Our Energy Production segment sells energy in the form of electricity, heat, hot water and cooling to our customers under long-term sales agreements.
CY2021Q4	tgen	Percentage Of Owned Joint Venture PercentageOfOwnedJointVenture	0.510
CY2021Q4	tgen	Percentage Of Owned Joint Venture PercentageOfOwnedJointVenture	0.510
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates</span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2021	tgen	Employee Retention Credit EmployeeRetentionCredit	1276021	USD
CY2021	tgen	Employee Retention Credit EmployeeRetentionCredit	1276021	USD
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="margin-bottom:6pt;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Concentration of Credit Risk</span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Financial instruments that expose us to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. We maintain our cash balances in bank accounts, which at times may exceed the Federal Deposit Insurance Corporation’s general deposit insurance limits. The amount on deposit at December 31, 2021 and 2020 which exceeded the $250,000 federally insured limit were approximately $3,092,111 and $770,098, respectively. We have not experienced any losses in such accounts and thus believe that we are not exposed to any significant credit risk on cash.</span></div><div style="margin-bottom:6pt;text-align:justify;text-indent:36pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">There was no customer who represented more than 10% of revenues for the year ended December 31, 2021 and one customer who represented more than 10% of revenues for the year ended December 31, 2020. We have approximately five hundred thirty-five customers who represented 100% of the revenues for the year ended December 31, 2021. There were two customers who represented more than 10% of the accounts receivable balance as of December 31, 2021, and zero as of December 31, 2020.</span></div>
CY2021Q4	us-gaap	Cash Fdic Insured Amount CashFDICInsuredAmount	250000	USD
CY2021Q4	us-gaap	Cash Uninsured Amount CashUninsuredAmount	3092111	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	549206	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	418000	USD
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	7400	USD
CY2021	tgen	Impairment Of Long Lived Production Assets Held For Use ImpairmentOfLongLivedProductionAssetsHeldForUse	0	USD
CY2021	tgen	Reversal Of Unfavorable Contract Liability ReversalOfUnfavorableContractLiability	0	USD
CY2021	tgen	Abandonment Of Patent Applications AbandonmentOfPatentApplications	7400	USD
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	7400	USD
CY2021	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	1078332	USD
CY2021	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	1731965	USD
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	24398073	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	28254579	USD
CY2021	tgen	Payment Termon Energy Production Contract Invoices PaymentTermonEnergyProductionContractInvoices	P30D
CY2021	tgen	Unbilled Revenue Revenue Recognized UnbilledRevenueRevenueRecognized	806218	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	2166208	USD
CY2021Q4	tgen	Performance Obligation Recognizedover Next Two Years Percent PerformanceObligationRecognizedoverNextTwoYearsPercent	0.93
CY2021Q4	tgen	Performance Obligation Recognizedover Next Twelve Months Percent PerformanceObligationRecognizedoverNextTwelveMonthsPercent	0.03
CY2021Q4	tgen	Performance Obligation Recognizedin Year Two Percent PerformanceObligationRecognizedinYearTwoPercent	0.90
CY2021	us-gaap	Advertising Expense AdvertisingExpense	47000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	23000	USD
CY2021	tgen	Research And Development Expense Gross ResearchAndDevelopmentExpenseGross	542000	USD
CY2020	tgen	Research And Development Expense Gross ResearchAndDevelopmentExpenseGross	767000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	3696000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-6150507	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24850261	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	24850258	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	25115518	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	24850258	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.25
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.25
CY2017Q2	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	0	USD
CY2020Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	992303	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	7000000	USD
CY2021Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	6691991	USD
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	5846591	USD
CY2021Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	549802	USD
CY2020Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	329702	USD
CY2021Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	523196	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	7764989	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	7168596	USD
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	2552168	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1371145	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1181023	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	2496470	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1136152	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1360318	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	197788	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	113723	USD
CY2021	tgen	Amortizationof Contract Related Intangible Assetsand Liabilities Net AmortizationofContractRelatedIntangibleAssetsandLiabilitiesNet	319084	USD
CY2020	tgen	Amortizationof Contract Related Intangible Assetsand Liabilities Net AmortizationofContractRelatedIntangibleAssetsandLiabilitiesNet	400404	USD
CY2021	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	205345	USD
CY2019Q4	us-gaap	Goodwill Goodwill	5281867	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5872993	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5811893	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	4090049	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3528047	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1782944	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	2283846	USD
CY2021	tgen	Depreciation Depletionand Amortization Property Plantand Equipment DepreciationDepletionandAmortizationPropertyPlantandEquipment	591047	USD
CY2020	tgen	Depreciation Depletionand Amortization Property Plantand Equipment DepreciationDepletionandAmortizationPropertyPlantandEquipment	702113	USD
CY2021	tgen	Noncash Asset Impairment NoncashAssetImpairment	524972	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	2875711	USD
CY2020Q4	us-gaap	Goodwill Goodwill	2406156	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021Q4	us-gaap	Goodwill Goodwill	2406156	USD
CY2020Q3	tgen	Period Of Severance Benefits For Key Management Employees Under The Plan PeriodOfSeveranceBenefitsForKeyManagementEmployeesUnderThePlan	P12M
CY2020Q3	tgen	Change In Control Severance Benefit Plan Period In Force ChangeInControlSeveranceBenefitPlanPeriodInForce	P3Y
CY2020Q3	tgen	Change In Control Severance Benefit Plan Period In Force Extension ChangeInControlSeveranceBenefitPlanPeriodInForceExtension	P1Y
CY2020Q3	tgen	Change In Control Severance Benefit Plan Notice Period For Cancellation ChangeInControlSeveranceBenefitPlanNoticePeriodForCancellation	P6M
CY2020Q3	tgen	Change In Control Severance Benefit Plan Threshold Period For Termination Prior To Change In Control ChangeInControlSeveranceBenefitPlanThresholdPeriodForTerminationPriorToChangeInControl	P3M
CY2020Q3	tgen	Change In Control Severance Benefit Plan Threshold Period For Termination After To Change In Control ChangeInControlSeveranceBenefitPlanThresholdPeriodForTerminationAfterToChangeInControl	P18M
CY2021	tgen	Product Warranty Period ProductWarrantyPeriod	P1Y
CY2019Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	205300	USD
CY2020	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	185696	USD
CY2020	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	226196	USD
CY2020Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	164800	USD
CY2021	us-gaap	Standard Product Warranty Accrual Warranties Issued StandardProductWarrantyAccrualWarrantiesIssued	119752	USD
CY2021	us-gaap	Standard Product Warranty Accrual Payments StandardProductWarrantyAccrualPayments	119752	USD
CY2021Q4	us-gaap	Standard Product Warranty Accrual StandardProductWarrantyAccrual	164800	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	715639	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	650194	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1869210	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1632574	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	641002	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	825848	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	93087	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y3M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.060
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.060
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	506514	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1315275	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	1222492	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	108762	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1956277	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1729006	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	733693	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	744981	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	298980	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	102978	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	228150	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2217544	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	261267	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1956277	USD
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	24850261	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	24850261	shares
CY2013Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	10000000	shares
CY2020	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	0.71
CY2020	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	10.33
CY2021	tgen	Share Based Compensation Shares Authorized Under Stock Option Plans Granted Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansGrantedExercisePriceRangeLowerRangeLimit	1.75
CY2021	tgen	Share Based Compensation Shares Authorized Under Stock Option Plans Cancelled And Forfeited Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansCancelledAndForfeitedExercisePriceRangeLowerRangeLimit	0.08
CY2021	tgen	Share Based Compensation Shares Authorized Under Stock Option Plans Cancelled And Forfeited Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansCancelledAndForfeitedExercisePriceRangeUpperRangeLimit	4.50
CY2021	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Lower Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit	0.71
CY2021	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Upper Range Limit ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit	10.33
CY2021	tgen	Share Based Compensation Arrangementby Share Based Payment Award Historical Forfeiture Rate ShareBasedCompensationArrangementbyShareBasedPaymentAwardHistoricalForfeitureRate	0.15
CY2020	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-98403	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	5592	USD
CY2021	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss	-37497	USD
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.045
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	238000	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	37560	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	124507	USD
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	24398073	USD
CY2021	us-gaap	Gross Profit GrossProfit	11587653	USD
CY2021Q4	us-gaap	Assets Assets	32362222	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	28254579	USD
CY2020	us-gaap	Gross Profit GrossProfit	10827514	USD
CY2020Q4	us-gaap	Assets Assets	30073653	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	9293000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	9341000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	303000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	313000	USD
CY2021Q4	tgen	Deferred Tax Asset Tax Deferred Expense Reserves And Accruals Accrued Liabilities And Other DeferredTaxAssetTaxDeferredExpenseReservesAndAccrualsAccruedLiabilitiesAndOther	338000	USD
CY2020Q4	tgen	Deferred Tax Asset Tax Deferred Expense Reserves And Accruals Accrued Liabilities And Other DeferredTaxAssetTaxDeferredExpenseReservesAndAccrualsAccruedLiabilitiesAndOther	267000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	176000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	191000	USD
CY2021Q4	tgen	Deferred Tax Asset Leases DeferredTaxAssetLeases	22000	USD
CY2020Q4	tgen	Deferred Tax Asset Leases DeferredTaxAssetLeases	25000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	141000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	108000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	288000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	265000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	217000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	754000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	790000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	270000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	276000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	11850000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	11766000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	11850000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	11766000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD

Files In Submission

Name	View Source	Status
0001537435-22-000014-index-headers.html	Edgar Link	pending
0001537435-22-000014-index.html	Edgar Link	pending
0001537435-22-000014.txt	Edgar Link	pending
0001537435-22-000014-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
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R76.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
tgen-20211231.htm	Edgar Link	pending
tgen-20211231.xsd	Edgar Link	pending
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tgen-20211231_def.xml	Edgar Link	unprocessable
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tgen-20211231_pre.xml	Edgar Link	unprocessable
tgn-20211231xex231.htm	Edgar Link	pending
tgn-20211231xex311.htm	Edgar Link	pending
tgn-20211231xex312.htm	Edgar Link	pending
tgn-20211231xex321.htm	Edgar Link	pending

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$TGEN
TECOGEN INC. Stock $tgen

2021 Form 10-K Financial Statement

#000153743522000014 Filed on March 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TGEN TECOGEN INC. Stock $tgen

2021 Form 10-K Financial Statement

#000153743522000014 Filed on March 10, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$TGEN
TECOGEN INC. Stock $tgen