Slide 1: 1Q 2017 Earnings
1Q 2017 Earnings NASDAQ: TGEN May 11, 2017
Slide 2: Participants
Participants Advanced Modular CHP Systems paca John Hatsopoulos * Co-Chief Executive Officer, Director Benjamin Locke * Co-Chief Executive Officer Robert Panora * President & Chief Operating Officer * Chief Financial Officer
Slide 3: Safe Harbor Statement
Tecogen-i9 mail Safe Harbor Statement This presentation includes forward-looking statements within the meaning of Section 27-A of the Securities Act of 1933, and Section 21-E of the Securities Exchange Act of 1934. Such statements include declarations regarding the intent, belief, or current expecta
Slide 4: Why Tecogen?
Advanced Modular CHP Systems paca Why Tecogen? Heat, Power & Cooling that is Cheaper, Cleaner, & More Reliable “Unregulated Utility”. Emissions Control CHP Modules llios Water Heaters TECOCHILL i Tor Electricity & Heat 2-3x Heat Efficiency Cooling & Heat Ultra-Clean Emissions Tecogen’s compelling RO
Slide 5: 1Q 2017 Results
Tecogen-| Advanced Modular CHP Systems PROFIT & Op. INCOME NET INCOME 1Q 2017 Results: — Total Revenues: $6.8M in 1Q17 vs. $5.1M in 1Q16 & $7.1M in 4Q16 Products: $2.8M in 1017 vs. $2.3M in 1916 & $3.2M in 4Q16 ~— Cogeneration sales continued driving Product revenue in 1Q Service: $4.0M in 1Q17 vs.
Slide 6: Recent Achievements
Tecogen Advanced Modular CHP Systems ) Recent Achievements Performance + Increased sales of new Inverde e+ due to technical superiority * — Growing our “Turnkey-Light’ business proposition Groundwork for Continued Growth + — Strengthening our relationship with ESCOs * Increased sales through TTCogen
Slide 7: Sales Benefitting From Key Relationships, TTcogen JV
Tecogen-) Advanced Modular CHP Systems eee Sales Benefitting From MN Key Relationships TTcogen JV ' Pre ™ Ss i = =
Slide 8: Backlog
pomceare Backlog Backlog Installed Base* Education 3% Recreation Health Care 6% Recreation 2% Multi-Unit 32% Education Residential 19.8% Government 9% 40.5% Hesptey Other 9.8% Health Industrial —_ macesere Care 13% Multi-unit Industrial Hospitality 9.5% Residential 55% Manufacturing 12.0% 4.9% $13.6
Slide 9: Financial Metrics
Tecogen-- Financial Metrics Advanced Modular CHP Systems Revenues, Margins. Growth FortheQuarter Ended v/v OE TOtal Mar. 31, 2017 Mar. 31, 2016 a 2087 Tecogen Revenue Model & Outlook REVENUE pase en Pee Cogeneration 2,296,687 1,417,971 335% = Three revenue streams Chiller & Heat Pump, 510710 __848,1
Slide 10: Consistent Financial Progress
Advanced Modular CHP Systems paca Consistent Financial Progress Revenues Gross Margin Trailing 4 Quarters - in Millions Trailing 4 Quarters (%) 42% 30.00 mets 40% 20.00 38% 15.00 36% 10.00 50H 34% 0.00 3% 2014 203520152016 2017 a ry a co) ra 8 Qt 30% 2014 ©2014-2015 2015- 2016-2016. 207 Products mSe
Slide 11: Opportunities & Outlook
Advanced Modular CHP Systems paca Opportunities & Outlook a growing company in a growing industry A * High ROI product * Technological innovation * Relationships with key partners * Increasing environmental and regulatory pressures * Resiliency and Demand Response * Turnkey installation * Long term
Slide 12: Q&A
Advanced Modular CHP Systems paca Q&A vee Tecochill3& Inverter-Based Cogeneration The Driving Force in Cooling NASDAQ: TGEN Ilios :¢2 & High ticieny INFINITE POTENTIAL 10 2017 Earnings Call 12
Slide 13: Contact Information
Advanced Modular CHP Systems — | paca Contact Information Company Information Tecogen Inc. 45 First Avenue Waltham, MA 02451 www.tecogen.com John Hatsopoulos, Co-CEO 781.622.1122 John.Hatsopoulos@tecogen.com