Slide 1: Tecogen Q2 2026
Tecogen Q2 2026 NYSE American: TGEN August 13, 2026
Slide 2: Safe Harbor Statement
SAFE HARBOR STATEMENT This presentation and accompanying documents contain “forward-looking statements” which may describe strategies, goals, outlooks or other non-historical matters, or projected revenues, Income, returns or other financial measures, that may include words such as "believe," "expec
Slide 3: Table of Contents
Table of Contents Strategic Updates Q2 Results On-Site Cogeneration Service Company Financials
Slide 4: Strategic Update
Strategic Update Data center chiller demonstration at Tecogen • 12 Demonstrations • 6 in-person 6 virtual • 8+GW of operating capacity represented cumulatively by data centers who attended • Multiple GWs of projects contracted or in construction • In-person visitors included hyperscalers, developers
Slide 5: Other Segments Opportunity Update
Other Segments Opportunity Update Sales Pipeline • Backlog >$8m • >$2m in further projects expected to be approved in next few months Cash • $6.78m at end of Q2 and >$6m presently • More deposits expected and higher revenue in Q3 expected so cash burn likely to be lower Healthcare Industrial Other C
Slide 6: 2Q 2026 Results
2Q 2026 Results Tecogen, Inc. QTD QTD Product Consolidated P&L - QTD % Change 06/30/2026 06/30/2025 2026 vs 2025 • Limited product revenue in Q2. Expect Revenues Product $ 1,134,772 $ 3,155,323 -64.0% stronger product revenue Q3. Services 4,375,253 3,965,168 10.3% Energy Production 236,111 174,329 3
Slide 7: 2Q 2026 Adjusted EBITDA Reconciliation
2Q 2026 Adjusted EBITDA Reconcilliation Key Points Tecogen, Inc. QTD QTD % Change • Adjusted EBITDA decreased due to lower Adjusted EBITDA - QTD 06/30/2026 06/30/2025 2026 vs 2025 Products revenue and increased costs Consolidated Net Income (Loss) $ (2,148,603) $ (1,464,104) 46.8% Interest Expense,
Slide 8: 2Q 2026 Performance by Segment
2Q 2026 Performance by Segment Tecogen, Inc. Key Points QTD QTD % Change 06/30/2026 06/30/2025 2026 vs 2025 • Product revenue decreased 64% Products Segment Revenue Cost of Sales $ 1,134,772 $ 584,755 3,155,323 2,232,155 -64.0% -73.8% • Service Revenue up 10% Gross Profit Gross Profit Margin 550,017
Slide 9: Summary
Summary 12 Product Demonstrations with well known data centers Non-data center pipeline growing Strong insider confidence shown by periodic share purchases by management and board