2Suppliers
16Customers
3Debt Items
11Related Chains

Source-Backed Evidence Depth

Tecogen Inc. (TGEN) is shown with relationship data already present in ChainSifter's database. Counts below come from stored supply-chain records and filing/source URLs where available; missing source URLs are not filled in or estimated.

31Total relationships
4Distinct source URLs
17High confidence
0.801Average confidence
2026-09-13Latest database update
ChainSifter does not infer unreported suppliers, customers, ownership, acquisitions, debt exposure, revenue dependency, or future supply-chain events on this public page.

Tecogen Inc. Suppliers

TickerNameConfidenceEvidence
SRE Sempra 72% enefit from certain tax credits through direct payments or transfers of tax credits to unrelated third parties. This particular new direct pay option is especially impactful given the fact that many …
SRE Sempra 72% Reciprocal relationship from SRE graph: Reciprocal relationship from TGEN graph: Reciprocal relationship from SRE graph: Reciprocal relationship from TGEN graph: Reciprocal relationship from SRE grap…

Tecogen Inc. Customers

TickerNameConfidenceEvidence
VERTIV VERTIV 92% We delivered strong progress over the last two months, highlighted by an imminent purchase order from Vertiv for a real-world operating deployment of a 1 MW chiller system.
VERTIV-CORPORATION VERTIV-CORPORATION 92% On February 28, 2025, to effectively begin the marketing of our product solutions to co-location data centers, we signed a global partnership agreement with Vertiv Corporation for the sale and distri…
AIVITA-GROUP-INC AIVITA-GROUP-INC 85% s required at the North Billerica facility and received $96,464 of proceeds from the liquidation of our investment in Aivita Group Inc., formerly EuroSite Power Inc. During the three months ended Mar…
AMERICAN-DG-ENERGY-INC AMERICAN-DG-ENERGY-INC 85% e have two wholly-owned subsidiaries American DG Energy, Inc. ("ADGE") and Tecogen CHP Solutions, Inc.. In addition, we own a 51% interest in American DG New York, LLC ("ADGNY"), a joint venture. ADG…
SRE Sempra 72% Reciprocal relationship from SRE graph: Reciprocal relationship from TGEN graph: Reciprocal relationship from SRE graph: Reciprocal relationship from TGEN graph: Reciprocal relationship from SRE grap…
SRE Sempra 72% enefit from certain tax credits through direct payments or transfers of tax credits to unrelated third parties. This particular new direct pay option is especially impactful given the fact that many …
ABOUT-TECOGEN-TECOGEN-INC ABOUT-TECOGEN-TECOGEN-INC 62% . Participants should ask to be joined to the Tecogen First Quarter conference call. Please begin dialing 10 minutes before the scheduled starting time. The earnings press release will be available o…
ADGNY-LLC ADGNY-LLC 62% 749,363 in 2024, an increase of $4,499,839 or 35.3%. The increase in cost of sales is due to increased Products revenue volume and increased Services costs. Our overall gross margin was 36.3% in 2025…
AMERICAN-DG-NEW-YORK-LLC AMERICAN-DG-NEW-YORK-LLC 62% to $18,105,100. Net cash provided by or used in operating activities For the year ended December 31, 2025 we used $9,911,674 in cash from operations compared to $4,060,547 in cash generated from oper…
CAPSTONE-TURBINE-CORPORATION CAPSTONE-TURBINE-CORPORATION 62% nefit from certain tax credits through direct payments or transfers of tax credits to unrelated third parties. This particular new direct pay option is especially impactful given the fact that many i…
EUROSITE-POWER-INC EUROSITE-POWER-INC 62% s required at the North Billerica facility and received $96,464 of proceeds from the liquidation of our investment in Aivita Group Inc., formerly EuroSite Power Inc. During the three months ended Mar…
NYSE-AMERICAN-LLC NYSE-AMERICAN-LLC 62% le varies between 6 months to a year or more. Therefore, our product revenue can be difficult to predict and the expected margin can vary. In most cases we work with consulting engineers who specify …
OPERATIONS-TECOGEN-INC OPERATIONS-TECOGEN-INC 62% December 31, 2025 and 2024 Note 1. Nature of Business and Operations Tecogen Inc., a Delaware corporation (together with its subsidiaries "we", "our", "us", "Tecogen," or "Company"), was incorporated…
ROTH-CAPITAL-PARTNERS-LLC ROTH-CAPITAL-PARTNERS-LLC 62% 749,363 in 2024, an increase of $4,499,839 or 35.3%. The increase in cost of sales is due to increased Products revenue volume and increased Services costs. Our overall gross margin was 36.3% in 2025…
SOUTHERN-CALIFORNIA-GAS-COMPANY SOUTHERN-CALIFORNIA-GAS-COMPANY 62% nefit from certain tax credits through direct payments or transfers of tax credits to unrelated third parties. This particular new direct pay option is especially impactful given the fact that many i…
TECOGEN-CHP-SOLUTIONS-INC TECOGEN-CHP-SOLUTIONS-INC 62% we", "our", "us", "Tecogen," or "Company"), was incorporated on September 15, 2000. We produce commercial and industrial, natural-gas-fueled engine-driven, combined heat and power (CHP) products that…

Tecogen Inc. Debt Obligations

InstrumentDescriptionConfidenceEvidence
TGEN-DEBT-12960 Xbrl Convertible 90% xbrl convertible detail from xbrl 2014-12-31.
TGEN-DEBT Debt stack $2.9M 90% Market cache reports total debt of $2.9M.
TGEN-DEBT-12959 Warrants outstanding: 4 90% xbrl warrant detail from xbrl 2017-12-31.

Tecogen Inc. Acquisitions

No acquisitions on recordNo completed or pending acquisitions found in our database for Tecogen Inc..

Tecogen Inc. Ownership

HolderNameConfidenceEvidence
TGEN-OWNER-SUSQUEHANNA-INTERNATIONAL-GROUP-LLP Susquehanna International Group, LLP 95% 13F/ownership overlay lists Susquehanna International Group, LLP; shares held 302,911; ownership 1.21%; value $2.0M; as of 2025-12-31.
TGEN-OWNER-GENDELL-JEFFREY-L Gendell, Jeffrey L. 95% 13F/ownership overlay lists Gendell, Jeffrey L.; shares held 295,541; ownership 1.18%; value $1.9M; as of 2025-12-31.
TGEN-OWNER-VANGUARD-CAPITAL-MANAGEMENT-LLC Vanguard Capital Management LLC 95% 13F/ownership overlay lists Vanguard Capital Management LLC; shares held 769,964; ownership 3.08%; value $5.0M; as of 2026-03-31.
TGEN-OWNER-BARD-ASSOCIATES-INC Bard Associates Inc. 95% 13F/ownership overlay lists Bard Associates Inc.; shares held 688,309; ownership 2.75%; value $4.5M; as of 2026-03-31.
TGEN-OWNER-UBS-GROUP-AG UBS Group AG 95% 13F/ownership overlay lists UBS Group AG; shares held 319,836; ownership 1.28%; value $2.1M; as of 2026-03-31.
TGEN-OWNER-PORTOLAN-CAPITAL-MANAGEMENT-LLC Portolan Capital Management, LLC 95% 13F/ownership overlay lists Portolan Capital Management, LLC; shares held 445,810; ownership 1.78%; value $2.9M; as of 2025-12-31.
TGEN-OWNER-AROSA-CAPITAL-MANAGEMENT-LP Arosa Capital Management LP 95% 13F/ownership overlay lists Arosa Capital Management LP; shares held 350,000; ownership 1.40%; value $2.3M; as of 2025-12-31.
TGEN-OWNER-PALISADES-INVESTMENT-PARTNERS-LLC Palisades Investment Partners, LLC 95% 13F/ownership overlay lists Palisades Investment Partners, LLC; shares held 333,907; ownership 1.34%; value $2.2M; as of 2026-03-31.
TGEN-OWNER-HERALD-INVESTMENT-MANAGEMENT-LTD Herald Investment Management Ltd 95% 13F/ownership overlay lists Herald Investment Management Ltd; shares held 420,000; ownership 1.68%; value $2.7M; as of 2026-03-31.
TGEN-OWNER-CLEAR-HARBOR-ASSET-MANAGEMENT-LLC Clear Harbor Asset Management, LLC 95% 13F/ownership overlay lists Clear Harbor Asset Management, LLC; shares held 650,000; ownership 2.60%; value $4.2M; as of 2026-03-31.

Tecogen Inc. Extended Supply Chain Network

TickerNameChain IndexHopsRelationship Types
VLO Valero Energy Corporation 100.00 2
COP ConocoPhillips 100.00 2
VERTIV VERTIV 63.48 1 ['receiving']
CTRI Centuri Holdings, Inc. 50.00 2
PWR Quanta Services, Inc. 50.00 2
PRIM Primoris Services Corporation 50.00 2
VG Venture Global, Inc. 50.00 2
ATEX Anterix Inc. 50.00 2
ED Consolidated Edison, Inc. 50.00 2
SRE Sempra 38.88 1 ['customer', 'supplier']
MPC Marathon Petroleum Corporation 14.78 2
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TGEN
Unlock TGEN Supply Chain Data
Verified relationships include:
SRESempraSupplier72%
SRESempraSupplier72%
VERTIVVERTIVCustomer92%
VERTIV-CORPORATIONVERTIV-CORPORATIONCustomer92%
+27 more relationships locked
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