TGEN 8-K
Tecogen Inc. (TGEN)
8-K
2026-03-18
For: 2026-03-17
View Original
Added on
April 08, 2026
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
__________________________
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of report (Date of earliest event reported): March 17, 2026
(Exact Name of Registrant as Specified in Charter)
(State or Other Jurisdiction of Incorporation)
| (Commission File Number) | (IRS Employer Identification No.) | |||||||
| (Address of Principal Executive Offices and Zip Code) | ||
(781 ) 466-6400
(Registrant's telephone number, including area code)
Securities registered or to be registered pursuant to Section 12(b) of the Act.
| Title of each class | Trading Symbol | Name of exchange on which registered | ||||||
| Common Stock, $0.001 par value per share | TGEN | NYSE American, LLC | ||||||
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o
Section 2 - Results of Operations and Financial Condition
Item 2.02. Results of Operations and Financial Condition.
On March 17, 2026, Tecogen Inc. (the “Company”) issued a press release with earnings commentary and supplemental information for the three and twelve months ended December 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.
The information in this Item 2.02 and Exhibit 99.1 to this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except as expressly set forth by specific reference in such a filing.
Section 7.01 - Regulation FD Disclosure
Item 7.01. Regulation FD Disclosure
On March 18, 2026, the Company will present the attached slides online in connection with an earnings conference call. The slides are being furnished as Exhibit 99.2 to this Current Report on Form 8-K.
The information in this Item 7.01 and Exhibit 99.2 to this Current Report on Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except as expressly set forth by specific reference in such a filing.
Section 9 - Financial Statements and Exhibits
Item 9.01. Financial Statements and Exhibits.
(d) Exhibits
| Exhibit | Description | ||||
| 99.1 | |||||
| 99.2 | |||||
| * | Filed herewith. | ||||
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.
| TECOGEN INC. | ||||||||
By: /s/ Abinand Rangesh | ||||||||
| March 17, 2026 | Abinand Rangesh, Chief Executive Officer | |||||||
Tecogen Announces
Fourth Quarter and Year-End 2025 Results
Abinand Rangesh, CEO of Tecogen, commented "during the upcoming call, I will provide some significant positive updates that will include the scale of the Vertiv opportunity pipeline for our chillers, the status of our own data center opportunities and an upcoming pilot project.
On other positive news, our revenue grew 20% year on year. Although our loss widened and cash burn increased, this was because of critical expenses needed to expand margins in the service business and to develop the data center opportunities including expanding manufacturing capacity, R&D on our data center dual power source chiller and marketing."
NORTH BILLERICA, Mass., March 17, 2026 - Tecogen Inc. (NYSE American:TGEN), a leading manufacturer of clean energy products, reported revenues of $27.07 million and net loss of $8.25 million for the year December 31, 2025 compared to $22.62 million and net loss of $4.76 million for the same period in 2024, an increase in revenues of 19.7% year over year. For the quarter ending December 31, 2025, revenues were $5.32 million and net loss of $3.99 million compared to revenues of $6.08 million, and a net loss of $1.19 million in 2024. We used $9.91 million in cash from operations, used $0.40 million in cash to acquire property plant and equipment, principally the improvements required at our North Billerica facility, and generated $17.40 million in cash from financing activities during the year ended December 31, 2025 due to the July 2025 follow-on offering. Our cash balance was $12.43 million at December 31, 2025.
Key Takeaways
Net Loss and Earnings Per Share
•Net loss for the quarter ended December 31, 2025 was $3.99 million compared to a net loss of $1.19 million for the same period of 2024, an increase of $2.81 million, due to the impairment of goodwill and long-lived assets, increased operating expenses and decreased gross profit from our Services segments. EPS for the quarters ended December 31, 2025 and 2024 was a loss of $0.13/share and $0.05/share, respectively.
•Net loss for the year ended December 31, 2025 was $8.25 million compared to a net loss of $4.76 million in 2024, an increase of $3.49 million, due to decreased gross profit for our Services segment due to increased labor and material costs, increased operating costs and the goodwill and long-lived asset impairment recognized in the year ended December 31, 2025. EPS for the years ended December 31, 2025 and 2024 was a loss of $0.30/share and $0.19, respectively.
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Loss from Operations
•Loss from operations for the quarter ended December 31, 2025 was $4.14 million compared to a loss from operations of $1.14 million for the same period in 2024, an increase of $3.00 million, due to the impairment of goodwill and long-lived assets, increased operating expenses and decreased gross profit from our Services segments.
•Loss from operations for the year ended December 31, 2025 was $8.24 million compared to a loss from operations of $4.53 million for the same period in 2024, an increase of $3.71 million, due to the impairment of goodwill and long-lived assets, increased operating expenses and decreased gross profit from our Services segments.
Revenues
•Revenues for the quarter ended December 31, 2025 were $5.32 million compared to $6.08 million for the same period in 2024, a 12.5% decrease.
◦Products revenues in the quarter ended December 31, 2025 were $0.46 million compared to $1.44 million for the same period in 2024, a decrease of 68.1%. The decrease in revenue during the quarter ended December 31, 2025 is due to a reduction in chiller and cogeneration revenue.
◦Services revenues in the quarter ended December 31, 2025 were $4.46 million, compared to $4.08 million for the same period in 2024, an increase of 9.3% due to a $0.36 million increase in revenues from existing contracts and a $0.01 million increase in revenues from the acquired Aegis maintenance contracts.
◦Energy Production revenues in the quarter ended December 31, 2025 were $395 thousand compared to $550 thousand for the same period in 2024, an decrease of 28.3%. The decrease in Energy Production revenue is due to the expiration of contracts late in 2024 and decreased run hours at certain energy production sites.
•Revenues for the year ended December 31, 2025 were $27.07 million compared to $22.62 million for the same period in 2024, an increase of 19.7% year over year.
◦Products revenues in the year ended December 31, 2025 were $9.13 million compared to $4.44 million for the same period in 2024 an increase of 105.5%. The increase in revenue during the year ended December 31, 2025 is due to increased chiller and cogeneration sales. The relocation to our new facility in April 2024 constrained our manufacturing capacity, which impacted product revenues during the second and third quarters of 2024.
◦Services revenues in the year ended December 31, 2025 were $16.62 million compared to $16.07 million for the same period in 2024, an increase of 3.4%. The increase in revenue during the year ended December 31, 2025 is due to the addition of $0.82 million in revenues from existing contracts, offset by a $0.27 million decrease in revenue from Aegis maintenance contracts.
◦Energy Production revenues in the year ended December 31, 2025 were $1.32 million, compared to $2.10 million for the same period in 2024, a decrease of 37.0%. The decrease in Energy Production revenue is due to the expiration of contracts late in 2024 and decreased run hours at certain energy production sites.
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Gross Profit
•Gross profit for the quarter ended December 31, 2025 was $1.96 million compared to $2.73 million in the same period in 2024. Gross margin decreased to 36.8% in the quarter ended December 31, 2025 compared to 45.0% for the same period in 2024. The decrease in gross margin was driven by increased labor and material costs in our Services segment, increased labor cost in our Products segment and lower Energy Production margins.
•Gross profit for the year ended December 31, 2025 was $9.82 million compared to $9.87 million in the same period of 2024. Gross margin decreased to 36.3% in the year ended December 31, 2025 compared to 43.6% for the same period in 2024. The decrease in gross margin was driven by increased labor and material costs in our Services segment and lower Energy Production margins in the year ended December 31, 2025.
Operating Expenses
•Operating expenses increased $2.22 million, or 57.4%, to $6.10 million in the quarter ended December 31, 2025 compared to $3.87 million in the same period in 2024, due to the $1.11 million goodwill and long-lived asset impairment and increases in payroll, benefits, recruitment costs, freight costs and sales commissions.
•Operating expenses increased $3.67 million, or 25.4%, to $18.07 million in the year ended December 31, 2025 compared to $14.40 million in the same period in 2024 due to the $1.11 million goodwill and long-lived asset impairment and increases in payroll, benefits, recruitment costs, freight costs and sales commissions.
Adjusted EBITDA was negative $2.43 million for the quarter ended December 31, 2025 compared to negative $0.69 million for the quarter ended December 31, 2025. Adjusted EBITDA was negative $5.64 million for the year ended December 31, 2025 compared to negative $3.63 million for the year ended December 31, 2025. (Adjusted EBITDA is defined as net income or loss attributable to Tecogen, adjusted for interest, income taxes, depreciation and amortization, stock-based compensation expense, unrealized gain or loss on investment securities, goodwill impairment charges and other non-cash non-recurring charges or gains including abandonment of intangible assets and asset impairment. See the table following the Condensed Consolidated Statements of Operations for a reconciliation from net income (loss) to Adjusted EBITDA, as well as important disclosures about the Company's use of Adjusted EBITDA).
Conference Call Scheduled for March 18, 2026, at 9:30 am ET
Tecogen will host a conference call on March 18, 2026 to discuss the fourth quarter results beginning at 9:30 am eastern time. To listen to the call please dial (877) 407-7186 within the U.S. and Canada, or +1 (201) 689-8052 from other international locations. Participants should ask to be joined to the Tecogen Fourth Quarter and Year-End 2025 earnings call. Please begin dialing 10 minutes before the scheduled starting time. The earnings press release will be available on the Company website at www.Tecogen.com in the "News and Events" section under "About Us." The earnings conference call will be webcast live. To view the associated slides, register for and listen to the webcast, go to https://ir.tecogen.com/ir-calendar. Following the call, the recording will be archived for 14 days.
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The earnings conference call will be recorded and available for playback one hour after the end of the call. To listen to the playback, dial (877) 660-6853 within the U.S. and Canada, or (201) 612-7415 from other international locations and use Conference Call ID#: 13752231.
About Tecogen
Tecogen Inc. designs, manufactures, sells, installs, and maintains high efficiency, ultra-clean, cogeneration products including engine-driven combined heat and power, air conditioning systems, and high-efficiency water heaters for residential, commercial, recreational and industrial use. The company provides cost effective, environmentally friendly and reliable products for energy production that nearly eliminate criteria pollutants and significantly reduce a customer’s carbon footprint. In business for over 35 years, Tecogen has shipped more than 3,200 units, supported by an established network of engineering, sales, and service personnel in key markets in North America. For more information, please visit www.tecogen.com or contact us for a free Site Assessment.
Forward Looking Statements
This press release and any 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, our Quarterly Reports on Form 10-Q and on our Current Reports on Form 8-K, 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 press release 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.
Tecogen Media & Investor Relations Contact Information:
Abinand Rangesh
P: 781-466-6487
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TECOGEN INC.
CONSOLIDATED BALANCE SHEETS
(unaudited)
| ASSETS | December 31, 2025 | December 31, 2024 | |||||||||
| Current Assets | |||||||||||
| Cash and cash equivalents | $ | 12,430,287 | $ | 5,405,233 | |||||||
| Accounts receivable, net | 4,280,991 | 6,026,545 | |||||||||
| Unbilled revenue | 138,020 | 398,898 | |||||||||
| Inventory, net | 10,949,697 | 9,634,005 | |||||||||
| Prepaid and other current assets | 1,086,310 | 680,565 | |||||||||
| Total current assets | 28,885,305 | 22,145,246 | |||||||||
| Property, plant and equipment, net | 1,609,321 | 1,738,036 | |||||||||
| Right of use assets - operating leases | 1,490,094 | 1,730,358 | |||||||||
| Right of use assets - finance leases | 1,434,080 | 452,390 | |||||||||
| Intangible assets, net | 2,146,503 | 2,513,189 | |||||||||
| Goodwill | 1,248,442 | 2,346,566 | |||||||||
| Other assets | 176,358 | 166,474 | |||||||||
| TOTAL ASSETS | $ | 36,990,103 | $ | 31,092,259 | |||||||
| LIABILITIES AND STOCKHOLDERS’ EQUITY | |||||||||||
| Current liabilities: | |||||||||||
| Related party notes payable | $ | — | $ | 1,548,872 | |||||||
| Accounts payable | 3,381,545 | 4,142,678 | |||||||||
| Accrued expenses | 2,814,150 | 2,890,886 | |||||||||
| Deferred revenue, current | 1,530,977 | 6,701,131 | |||||||||
| Operating lease obligations, current | 538,641 | 430,382 | |||||||||
| Finance lease obligations, current | 280,265 | 85,646 | |||||||||
| Acquisition liabilities, current | 677,162 | 902,552 | |||||||||
| Unfavorable contract liabilities, current | 44,433 | 113,449 | |||||||||
| Total current liabilities | 9,267,173 | 16,815,596 | |||||||||
| Long-term liabilities: | |||||||||||
| Deferred revenue, net of current portion | 3,265,886 | 1,165,951 | |||||||||
| Operating lease obligations, net of current portion | 1,004,488 | 1,341,789 | |||||||||
| Finance lease obligations, net of current portion | 992,285 | 325,235 | |||||||||
| Acquisition liabilities, net of current portion | 826,757 | 1,008,760 | |||||||||
| Unfavorable contract liability, net of current portion | 160,902 | 309,390 | |||||||||
| Total liabilities | 15,517,491 | 20,966,721 | |||||||||
| Commitments and contingencies | — | — | |||||||||
| Stockholders’ equity: | |||||||||||
| Tecogen Inc. stockholders’ equity: | |||||||||||
Common stock, $0.001 par value; 100,000,000 shares authorized; 29,846,479 issued and outstanding at December 31, 2025 and 24,950,261 shares issued and outstanding at December 31, 2024 | 29,847 | 24,950 | |||||||||
| Additional paid-in capital | 78,216,467 | 57,845,289 | |||||||||
| Unearned compensation | (712,019) | — | |||||||||
| Accumulated deficit | (55,888,649) | (47,639,894) | |||||||||
| Total Tecogen Inc. stockholders’ equity | 21,645,646 | 10,230,345 | |||||||||
| Noncontrolling interest | (173,034) | (104,807) | |||||||||
| Total stockholders’ equity | 21,472,612 | 10,125,538 | |||||||||
| TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY | $ | 36,990,103 | $ | 31,092,259 | |||||||
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TECOGEN INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(unaudited)
| Three Months Ended | |||||||||||
| December 31, 2025 | December 31, 2024 | ||||||||||
| Revenues | |||||||||||
| Products | $ | 460,522 | $ | 1,441,909 | |||||||
| Services | 4,462,823 | 4,083,492 | |||||||||
| Energy production | 394,652 | 550,121 | |||||||||
| Total revenues | 5,317,997 | 6,075,522 | |||||||||
| Cost of sales | |||||||||||
| Products | 492,219 | 995,921 | |||||||||
| Services | 2,527,701 | 2,009,762 | |||||||||
| Energy production | 340,669 | 335,392 | |||||||||
| Total cost of sales | 3,360,589 | 3,341,075 | |||||||||
| Gross profit | 1,957,408 | 2,734,447 | |||||||||
| Operating expenses | |||||||||||
| General and administrative | 4,090,960 | 2,928,287 | |||||||||
| Selling | 585,163 | 503,145 | |||||||||
| Research and development | 307,426 | 226,843 | |||||||||
| Gain on disposition of assets | (1,250) | (4,111) | |||||||||
| Goodwill impairment | 1,113,129 | 217,295 | |||||||||
| Total operating expenses | 6,095,428 | 3,871,459 | |||||||||
| Loss from operations | (4,138,020) | (1,137,012) | |||||||||
| Other income (expense) | |||||||||||
| Other income (expense), net | 90,409 | (11,509) | |||||||||
| Interest expense | (38,697) | (30,762) | |||||||||
| Gain on sale of marketable securities | 3,687 | — | |||||||||
| Unrealized gain on marketable securities | 85,988 | — | |||||||||
| Total other income (expense), net | 141,387 | (42,271) | |||||||||
| Loss before provision for state income taxes | (3,996,633) | (1,179,283) | |||||||||
| Provision for state income taxes | — | 465 | |||||||||
| Consolidated net loss | (3,996,633) | (1,179,748) | |||||||||
| Loss (income) attributable to the non-controlling interest | 2,853 | (6,319) | |||||||||
| Loss attributable to Tecogen Inc. | $ | (3,993,780) | $ | (1,186,067) | |||||||
| Net loss per share - basic | $ | (0.13) | $ | (0.05) | |||||||
| Net loss per share - diluted | $ | (0.13) | $ | (0.05) | |||||||
| Weighted average shares outstanding - basic | 29,839,305 | 24,893,739 | |||||||||
| Weighted average shares outstanding - diluted | 29,839,305 | 24,893,739 | |||||||||
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| Three Months Ended | |||||||||||
| December 31, 2025 | December 31, 2024 | ||||||||||
Non-GAAP financial disclosure (1) | |||||||||||
| Net loss attributable to Tecogen Inc. | $ | (3,993,780) | $ | (1,186,067) | |||||||
| Interest expense, net | 38,697 | 30,762 | |||||||||
| Income taxes | — | 465 | |||||||||
| Depreciation & amortization, net | 256,145 | 134,039 | |||||||||
| EBITDA | (3,698,938) | (1,020,801) | |||||||||
| Stock-based compensation | 138,171 | 41,082 | |||||||||
| Gain on sale of marketable securities | (3,687) | — | |||||||||
| Unrealized gain on marketable securities | (85,988) | — | |||||||||
| Inventory write down | 110,488 | 70,530 | |||||||||
| Goodwill and long-lived asset impairment | 1,113,129 | 217,295 | |||||||||
| Adjusted EBITDA | $ | (2,426,825) | $ | (691,894) | |||||||
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TECOGEN INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(unaudited)
| Years Ended | |||||||||||
| December 31, 2025 | December 31, 2024 | ||||||||||
| Revenues | |||||||||||
| Products | $ | 9,133,450 | $ | 4,443,996 | |||||||
| Services | 16,616,523 | 16,074,870 | |||||||||
| Energy production | 1,323,737 | 2,100,670 | |||||||||
| Total revenues | 27,073,710 | 22,619,536 | |||||||||
| Cost of sales | |||||||||||
| Products | 6,097,501 | 3,014,655 | |||||||||
| Services | 10,202,774 | 8,432,876 | |||||||||
| Energy production | 948,927 | 1,301,832 | |||||||||
| Total cost of sales | 17,249,202 | 12,749,363 | |||||||||
| Gross profit | 9,824,508 | 9,870,173 | |||||||||
| Operating expenses: | |||||||||||
| General and administrative | 13,522,035 | 11,356,406 | |||||||||
| Selling | 2,267,247 | 1,880,903 | |||||||||
| Research and development | 1,166,744 | 961,837 | |||||||||
| Loss (gain) on sale of assets | 183 | (12,181) | |||||||||
| Long-lived asset impairment | 15,005 | — | |||||||||
| Goodwill impairment | 1,098,124 | 217,295 | |||||||||
| Total operating expenses | 18,069,338 | 14,404,260 | |||||||||
| Loss from operations | (8,244,830) | (4,534,087) | |||||||||
| Other income (expense) | |||||||||||
| Interest and other income (expense) | 151,711 | (26,814) | |||||||||
| Interest expense | (150,289) | (90,304) | |||||||||
| Gain on the sale of marketable securities | 3,687 | — | |||||||||
| Unrealized gain on marketable securities | 10,993 | — | |||||||||
| Total other expense, net | 16,102 | (117,118) | |||||||||
| Loss before income taxes | (8,228,728) | (4,651,205) | |||||||||
| State income tax provision | 20,615 | 22,565 | |||||||||
| Consolidated net loss | (8,249,343) | (4,673,770) | |||||||||
| Loss (income) attributable to the noncontrolling interest | 588 | (86,468) | |||||||||
| Net loss attributable to Tecogen Inc. | $ | (8,248,755) | $ | (4,760,238) | |||||||
| Net loss per share - basic | $ | (0.30) | $ | (0.19) | |||||||
| Net loss per share - diluted | $ | (0.30) | $ | (0.19) | |||||||
| Weighted average shares outstanding - basic | 27,233,143 | 24,861,190 | |||||||||
| Weighted average shares outstanding - diluted | 27,233,143 | 24,861,190 | |||||||||
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| Years Ended | |||||||||||
| December 31, 2025 | December 31, 2024 | ||||||||||
Non-GAAP financial disclosure (1) | |||||||||||
| Net income loss attributable to Tecogen Inc. | $ | (8,248,755) | $ | (4,760,238) | |||||||
| Interest expense | 150,289 | 90,304 | |||||||||
| Provision for income taxes | 20,615 | 22,565 | |||||||||
| Depreciation & amortization, net | 877,675 | 553,783 | |||||||||
| EBITDA | (7,200,176) | (4,093,586) | |||||||||
| Stock-based compensation | 348,029 | 172,987 | |||||||||
| Realized gain on marketable securities | (3,687) | — | |||||||||
| Unrealized gain on marketable securities | (10,993) | — | |||||||||
| Inventory writedown | 110,488 | 70,530 | |||||||||
| Goodwill and long-lived asset impairment | 1,113,129 | 217,295 | |||||||||
Adjusted EBITDA | $ | (5,643,210) | $ | (3,632,774) | |||||||
(1) Non-GAAP Financial Measures
In addition to reporting net income, a U.S. generally accepted accounting principle (“GAAP”) measure, this news release contains information about Adjusted EBITDA (net income (loss) attributable to Tecogen Inc adjusted for interest, income taxes, depreciation and amortization, stock-based compensation expense, unrealized gain or loss on investment securities, goodwill impairment charges and other non-cash non-recurring charges including abandonment of certain intangible assets), which is a non-GAAP measure. The Company believes Adjusted EBITDA allows investors to view its performance in a manner similar to the methods used by management and provides additional insight into its operating results. Adjusted EBITDA is not calculated through the application of GAAP. Accordingly, it should not be considered as a substitute for the GAAP measure of net income and, therefore, should not be used in isolation of, but in conjunction with, the GAAP measure. The use of any non-GAAP measure may produce results that vary from the GAAP measure and may not be comparable to a similarly defined non-GAAP measure used by other companies.
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TECOGEN INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(unaudited)
| For the Years Ended | |||||||||||
| December 31, 2025 | December 31, 2024 | ||||||||||
| CASH FLOWS FROM OPERATING ACTIVITIES: | |||||||||||
| Consolidated loss | $ | (8,249,343) | $ | (4,673,770) | |||||||
| Adjustments to reconcile net loss to net cash used in operating activities: | |||||||||||
| Depreciation, accretion and amortization, net | 877,675 | 553,783 | |||||||||
| Loss (gain) on sale of assets | 183 | (12,181) | |||||||||
| Provision for credit losses | 62,958 | 146,010 | |||||||||
| Provision for inventory reserve | 110,488 | 70,530 | |||||||||
| Unrealized gain on investment securities | (10,993) | — | |||||||||
| Gain on the sale of investments | (3,687) | — | |||||||||
| Stock-based compensation | 348,029 | 172,987 | |||||||||
| Goodwill and long-lived asset impairment | 1,113,129 | 217,295 | |||||||||
| Non-cash interest expense | 43,476 | 45,025 | |||||||||
| Changes in operating assets and liabilities: | |||||||||||
| (Increase) decrease in: | |||||||||||
| Accounts receivable | 1,682,596 | 608,929 | |||||||||
| Inventory, net | (1,426,182) | 848,884 | |||||||||
| Unbilled revenue | 260,879 | 859,634 | |||||||||
| Prepaid expenses and other current assets | (405,745) | (319,926) | |||||||||
| Other non-current assets | 464,576 | 510,723 | |||||||||
| Increase (decrease) in: | |||||||||||
| Accounts payable | (761,131) | (371,736) | |||||||||
| Accrued expenses | (76,736) | 386,257 | |||||||||
| Deferred revenue | (3,070,219) | 5,850,265 | |||||||||
| Other current liabilities | (871,627) | (832,162) | |||||||||
| Net cash provided by (used in) operating activities | (9,911,674) | 4,060,547 | |||||||||
| CASH FLOWS FROM INVESTING ACTIVITIES: | |||||||||||
| Purchases of property and equipment | (400,781) | (969,163) | |||||||||
| Proceeds on sale of property and equipment | 4,290 | 51,400 | |||||||||
| Distributions to noncontrolling interest | (67,639) | (96,974) | |||||||||
| Net used in investing activities | (464,130) | (1,014,737) | |||||||||
| CASH FLOWS FROM FINANCING ACTIVITIES: | |||||||||||
| Proceeds from follow-on offering, net of transaction costs | 18,105,100 | — | |||||||||
| (Repayment of) proceeds from related party note | (1,076,956) | 1,000,000 | |||||||||
| Finance lease principal payments | (324,065) | (62,847) | |||||||||
| Proceeds from exercise of stock options | 696,779 | 71,000 | |||||||||
| Net cash provided by financing activities | 17,400,858 | 1,008,153 | |||||||||
| Change in cash and cash equivalents | 7,025,054 | 4,053,963 | |||||||||
| Cash and cash equivalents, beginning of the year | 5,405,233 | 1,351,270 | |||||||||
| Cash and cash equivalents, end of the year | $ | 12,430,287 | $ | 5,405,233 | |||||||
| Supplemental disclosure of cash flow information: | |||||||||||
| Cash paid for interest | $ | 183,354 | $ | 45,278 | |||||||
| Cash paid for taxes | $ | 20,615 | $ | 22,565 | |||||||
| Non-cash investing activities | |||||||||||
| Right-of-use assets acquired under operating leases | $ | 193,480 | $ | 1,650,994 | |||||||
| Right-of-use assets acquired under finance leases | $ | 1,227,447 | $ | 295,085 | |||||||
| Aegis acquisition: | |||||||||||
| Contingent consideration | $ | — | $ | 272,901 | |||||||
| Non-cash financing activities | |||||||||||
| Related party note conversion to common stock | $ | 514,148 | $ | — | |||||||
10
Tecogen FY 2025 NYSE American: TGEN March 18, 2026
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. 2
Table of Contents Vertiv Partnership Update Data Center Sales Pipeline Q4 Results On-Site CogenerationService Company Financials
Vertiv Partnership Update 4 In the design phase of projects with 25MW to 50MW of our chillers • Equal to 50 to 100 units of the 150-ton Dual Power Source chiller Currently Negotiating Master Partnership Agreement • Expands existing marketing agreement Working on technology demonstration project We may eventually bring our dual power source technology to Vertiv’s existing chillers • This may allow Tecogen to scale manufacturing quickly
Tecogen Data Center Opportunity Pipeline 5 Data Center MWs Chiller Type Number Status 1MW Dual Power - 150 ton 2 Vertiv demo project. 1MW Dual Power - 150 ton 2 to 4 Existing data center expansion. Site expects to be operational H1 2027 20MW Dtx - 400 ton 8 to 13, broken into two phases Final stages of negotating with tenant. Expect phase 1 - 10MW to be operational Q1 2027. 25 MW Dtx - 400 ton 8 to 10 Same owner as 20 MW project, also has a 50MW project >500MW Dual Power - 150 ton 40 Demo project with established developer. Timing TBD. 100MW Dual Power - 150 ton 100+ Filed for environmental permits. Other Projects 100MW x 2 Stx & Dtx TBD LOI for 6 Stx chillers. Multiple tenant negotations ongoing. 600MW Dtx TBD Filed for environmental permit, negotiating tenant leases
Manufacturing Capacity Update 6 Qualified sheet metal and refrigeration contract manufacturer • First article has been completed • Contract manufacturer already builds similar assemblies in hundreds of units per year Qualified electrical assembly companies • First articles have been received and qualified at Tecogen’s facility Tecogen building some inventory capacity • We are currently building some inventory capacity of the dual power source chiller to reduce lead time for data center projects
Strategic Priorities 7 Last 9 months - Focused Effort on Key Priorities • Technology – Data Center Dual Power Source Chiller • Increased marketing spend to data centers • Manufacturing throughput expansion • NYC service group – revenue and margin expansion Cash • Currently at $10m – strategic initiatives at factory and investments in NYC service groups to increase margin have resulted in higher cash burn • Expect to cut cash burn back substantially Q2 onwards (we operated on $2m from 2023 to 2025, including a factory move)
4Q 2025 Results 8 Key Points • Product revenue lower in Q4 due to delays on a couple of projects • Service revenue higher by 9% due to higher billable activity and greater unit operations • Margin lower due to higher costs, predominantly in service • Goodwill write down (non-cash) for ADGE / Energy assets as contracts come to end of life. • G&A expenses, R&D and Selling expenses higher as we work to break into data center market QTD QTD % Change 12/31/2025 12/31/2024 2025 vs 2024 Revenues Product 460,522$ 1,441,910$ -68.1% Services 4,462,823 4,083,492 9.3% Energy Production 394,652 550,121 -28.3% Total Revenues 5,317,997 6,075,523 -12.5% Cost of Sales Products 492,219 995,921 -50.6% Services 2,527,701 2,009,762 25.8% Energy Production 340,669 335,392 1.6% Total Cost of Sales 3,360,589 3,341,075 0.6% Gross Profit 1,957,408 2,734,447 -28.4% Operating Expenses: General and Administrative 4,090,960 2,928,287 39.7% Selling 585,163 503,145 16.3% Research & Development 307,426 226,843 35.5% Gain on Sale of Assets (1,250) (4,111) 69.6% Goodwill and Long-Lived Asset Impairment 1,113,129 217,295 412.3% Total Operating Expenses 6,095,428 3,871,459 57.4% Loss from Operations (4,138,020) (1,137,012) -263.9% Other Income (Expense) 141,387 (42,271) 434.5% Consolidated Net Income (Loss) (3,996,633)$ (1,179,748)$ -238.8% Tecogen, Inc. Consolidated P&L - QTD
4Q 2025 Adjusted EBITDA Reconcilliation 9 Key Points • Adjusted EBITDA loss worse due to higher costs *Adjusted EBITDA is defined as net Income (loss) attributable to Tecogen Inc, adjusted for interest, depreciation and amortization, stock-based compensation expense, unrealized loss on investment securities, non-cash abandonment of intangible assets, goodwill impairment and other non-recurring charges or gains including abandonment of certain intangible assets and extinguishment of debt QTD QTD % Change 12/31/2025 12/31/2024 2025 vs 2024 Net Income (Loss) (3,993,780)$ (1,186,067)$ 236.7% Interest Expense, Net 38,697 30,762 25.8% Income Tax Expense - 465 -100.0% Depreciation & Amortization 256,145 134,039 91.1% EBITDA (3,698,938) (1,020,801) 262.4% Stock Based Compensation 138,171 41,082 236.3% Gain on Sale of Marketable Securities (3,687) - Unrealized Gain on Marketable Securities (85,988) - Inventory Write Down 110,488 70,530 56.7% Goodwill and Long-Lived Asset Impairment 1,113,129 217,295 412.3% Adjusted EBITDA (2,426,825)$ (691,894)$ 250.8% Tecogen, Inc. Adjusted EBITDA - QTD
4Q 2025 Performance by Segment 10 Service Margin • NJ and Manhattan continues to be lower performing but both revenue and margin improved in the 4th quarter. • Expect to see increases in margin as we cut costs and cash burn Q2 onwards. Product Margin • Limited product revenue in Q4 due to delayed projects. QTD QTD % Change 12/31/2025 12/31/2024 2025 vs 2024 Products Segment Revenue 460,522$ 1,441,909$ -68.1% Cost of Sales 492,219 995,921 -50.6% Gross Profit (31,696) 445,988 -107.1% Gross Profit Margin -6.9% 30.9% -37.8% Services Segment Revenue 4,462,823$ 4,083,492$ 9.3% Cost of Sales 2,527,701 2,009,762 25.8% Gross Profit 1,935,122 2,073,730 -6.7% Gross Profit Margin 43.4% 50.8% -7.4% Energy Production Segment Revenue 394,652$ 550,121$ -28.3% Cost of Sales 340,669 335,392 1.6% Gross Profit 53,982 214,729 -74.9% Gross Profit Margin 13.7% 39.0% -25.4% Total Revenue 5,317,997$ 6,075,522$ -12.5% Cost of Sales 3,360,589 3,341,075 0.6% Gross Profit 1,957,408 2,734,447 -28.4% Gross Profit Margin 36.8% 45.0% -8.2% Tecogen, Inc. Segment Analysis - QTD
FY 2025 Results 11 Key Points • Product revenue up 100% • Service Revenue up 3% • Overall Revenue up 20% • Margin lower this year due to increased costs spent in service group • G&A, Sales and R&D costs higher due to investments as we work to break into data centers YTD YTD % Change 12/31/2025 12/31/2024 2025 vs 2024 Revenues Product 9,133,450$ 4,443,996$ 105.5% Services 16,616,523 16,074,870 3.4% Energy Production 1,323,737 2,100,670 -37.0% Total Revenues 27,073,710 22,619,536 19.7% Cost of Sales Products 6,097,501 3,014,655 102.3% Services 10,202,774 8,432,876 21.0% Energy Production 948,927 1,301,832 -27.1% Total Cost of Sales 17,249,202 12,749,363 35.3% Gross Profit 9,824,508 9,870,173 -0.5% Operating Expenses: General and Administrative 13,522,035 11,356,406 19.1% Selling 2,267,247 1,880,903 20.5% Research & Development 1,166,744 961,837 21.3% Gain on Sale of Assets 183 (12,181) 101.5% Goodwill Impairment 1,113,129 217,295 412.3% Total Operating Expenses 18,069,338 14,404,260 25.4% Loss from Operations (8,244,830) (4,534,087) -81.8% Other Income (Expense) 16,102 (117,118) 113.7% Consolidated Net Income (Loss) (8,249,343)$ (4,673,770)$ -76.5% Tecogen, Inc. Consolidated P&L - YTD
FY 2025 Adjusted EBITDA Reconcilliation 12 Key Points • Adjusted EBITDA loss increased YoY due to higher costs *Adjusted EBITDA is defined as net Income (loss) attributable to Tecogen Inc, adjusted for interest, depreciation and amortization, stock-based compensation expense, unrealized loss on investment securities, non-cash abandonment of intangible assets, goodwill impairment and other non-recurring charges or gains including abandonment of certain intangible assets and extinguishment of debt YTD YTD % Change 12/31/2025 12/31/2024 2025 vs 2024 Net Income (Loss) (8,248,755)$ (4,760,238)$ 73.3% Interest Expense, Net 150,289 90,304 66.4% Income Tax Expense 20,615 22,565 -8.6% Depreciation & Amortization 877,675 553,783 58.5% EBITDA (7,200,176) (4,093,586) 75.9% Stock Based Compensation 348,029 172,987 101.2% Realized Gain on Marketable Securities (3,687) - Unrealized Gain on Marketable Securities (10,993) - Inventory Write Down 110,488 70,530 56.7% Goodwill and Long-Lived Asset Impairment 1,113,129 217,295 412.3% Adjusted EBITDA (5,643,210)$ (3,632,774)$ 55.3% Tecogen, Inc. Adjusted EBITDA - YTD
FY 2025 Performance by Segment 13 Service Margin • Significant investments into service group to improve margins in NJ and NYC • Product Margin • Margin flat or slightly higher on product YTD YTD % Change 12/31/2025 12/31/2024 2025 vs 2024 Products Segment Revenue 9,133,450$ 4,443,996$ 105.5% Cost of Sales 6,097,501 3,014,655 102.3% Gross Profit 3,035,949 1,429,341 112.4% Gross Profit Margin 33.2% 32.2% 1.1% Services Segment Revenue 16,616,523$ 16,074,870$ 3.4% Cost of Sales 10,202,774 8,432,876 21.0% Gross Profit 6,413,749 7,641,994 -16.1% Gross Profit Margin 38.6% 47.5% -8.9% Energy Production Segment Revenue 1,323,737$ 2,100,670$ -37.0% Cost of Sales 948,927 1,301,832 -27.1% Gross Profit 374,810 798,837 -53.1% Gross Profit Margin 28.3% 38.0% -9.7% Total Revenue 27,073,710$ 22,619,536$ 19.7% Cost of Sales 17,249,202 12,749,363 35.3% Gross Profit 9,824,508 9,870,173 -0.5% Gross Profit Margin 36.3% 43.6% -7.3% Tecogen, Inc. Segment Analysis - YTD
Summary Investments made into increasing throughput, marketing and improving margin. Multiple positive developments including demo project with Vertiv Tecogen’s pipeline is solid, team working flat out to close data center and non-data center business Expect to have cash burn reduced by Q2