FY 2024 Presentation

OTCQX: TGEN

EARNINGS CALL MARCH 18, 2025 FY 2024

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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," "expect," "anticipate," "intend," "plan," "estimate," "project," "target," "potential," "will," "should," "could," "likely," or "may" and similar expressions intended to identify forward-looking statements. These statements are only predictions and involve known and unknown risks, uncertainties, and other factors that may cause our actual results to differ materially from those expressed or implied by such forward-looking statements. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Forward-looking statements speak only as of the date on which they are made, and we undertake no obligation to update or revise any forward-looking statements.

In addition to those factors described in our Annual Report on Form 10-K and our Quarterly Reports on Form 10-Q under "Risk Factors", among the factors that could cause actual results to differ materially from past and projected future results are the following: fluctuations in demand for our products and services, competing technological developments, issues relating to research and development, the availability of incentives, rebates, and tax benefits relating to our products and services, changes in the regulatory environment relating to our products and services, integration of acquired business operations, and the ability to obtain financing on favorable terms to fund existing operations and anticipated growth.

In addition to GAAP financial measures, this presentation includes certain non-GAAP financial measures, including adjusted EBITDA which excludes certain expenses as described in the presentation. We use Adjusted EBITDA as an internal measure of business operating performance and believe that the presentation of non-GAAP financial measures provides a meaningful perspective of the underlying operating performance of our current business and enables investors to better understand and evaluate our historical and prospective operating performance by eliminating items that vary from period to period without correlation to our core operating performance and highlights trends in our business that may not otherwise be apparent when relying solely on GAAP financial measures.

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AI LIQUID COOLING MARKET OPPORTUNITY

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THE PROBLEM

Power Needs of AI Data Center

Cooling

Up to 30% of a data center's available electrical power may need to be allocated to cooling

This power is then not available to for computing

Computing is the revenue source for a data center

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SOLUTION - TECOGEN'S ADVANCED

NATURAL GAS CHILLER

Increases available power

Tecogen's unique advanced natural gas

chiller (Tecochill) increases a data center's

available power

Fast and Easy Installation

Faster and cheaper to install than on-site power generation

Ultra low NOx and CO emissions for simplified air-permits

Proven technology in 24/7 critical applications including hospitals, ice rinks, cannabis

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TECOCHILL COMPARED TO ALTERNATIVES

Electrical Power Needed