Tecogen Inc. (TGEN) Revenue History
Annual and quarterly revenue from 2011 to present
TGEN Revenue Over Time (2011–2025)
TGEN Revenue Growth History
10 of 14 years with positive growth- FY2011 revenue growth
- N/A
- FY2012 revenue growth
- +37.9%
- FY2013 revenue growth
- +3.9%
- FY2014 revenue growth
- +22.0%
- FY2015 revenue growth
- +10.9%
- FY2016 revenue growth
- +14.2%
- FY2017 revenue growth
- +35.6%
- FY2018 revenue growth
- +8.1%
- FY2019 revenue growth
- -6.8%
- FY2020 revenue growth
- -15.5%
- FY2021 revenue growth
- -13.6%
- FY2022 revenue growth
- +2.5%
- FY2023 revenue growth
- +0.5%
- FY2024 revenue growth
- -10.0%
- FY2025 revenue growth
- +19.7%
| Quarter | Revenue | YoY |
|---|---|---|
| Q1 2026 | $6.3M | -12.9% |
| Q4 2025 | $5.3M | -12.5% |
| Q3 2025 | $7.2M | +27.6% |
| Q2 2025 | $7.3M | +54.3% |
| Q1 2025 | $7.3M | +17.6% |
| Q4 2024 | $6.1M | +3.0% |
| Q3 2024 | $5.6M | -20.8% |
| Q2 2024 | $4.7M | -29.9% |
Multi-year avg. share of annual revenue by fiscal quarter
Revenue Breakdown (FY 2025)
TGEN's revenue distribution by segment and geography for fiscal year 2025
By Product/Segment
By Geography
TGEN Revenue Analysis (2011–2025)
Current Revenue & Growth
As of June 21, 2026, Tecogen Inc. (TGEN) generated trailing twelve-month (TTM) revenue of $26.1 million, reflecting significant decline in growth of -12.9% year-over-year. The most recent quarter (Q1 2026) recorded $6.3 million in revenue, up 19.1% sequentially.
Historical Growth Trajectory
TGEN's 5-year compound annual growth rate (CAGR) stands at -0.9%, indicating revenue contraction over this period. The 3-year CAGR of +2.7% exceeds the 5-year average, indicating an acceleration in the most recent period. Tecogen Inc.'s highest annual revenue of $35.9 million was recorded in 2018.
Revenue by Segment
TGEN's revenue is primarily driven by Service (61%), Product (34%), and Energy Service (5%). With over half of revenue concentrated in Service, the company has a focused business model while developing other growth vectors.
Peer Comparison
Compared to Industrials sector peers — including CDTX (-100.0% YoY), PESI (-0.9% YoY), and AMTX (-12.0% YoY) — TGEN has outperformed the peer group in revenue growth. Compare TGEN vs CDTX →
TGEN Revenue vs Peers
Revenue metrics vs comparable public companies
| Company | TTM Revenue | YoY Growth | 5Y CAGR | Op. Margin | Compare |
|---|---|---|---|---|---|
| TGENCurrent | $26M | -12.9% | -0.9% | -26.3% | |
 CDTX | $1M | -100.0% | -42.9% | -13811.9% | |
 PESI | $62M | -0.9% | -10.2% | -19.0% | |
 AMTX | $208M | -12.0% | +4.7% | -17.9% | |
 CLNE | $426M | +5.4% | +7.9% | -22.0% | |
 GNRC | $4.2B | -0.5% | +11.1% | 6.9% |
TGEN Historical Revenue Data (2011–2025)
| Year | Revenue | YoY % | Gross Profit | Gross Margin | Op. Income | Op. Margin |
|---|---|---|---|---|---|---|
| 2025 | $27.1M | +19.7% | $9.8M | 36.3% | $-7,131,518 | -26.3% |
| 2024 | $22.6M | -10.0% | $9.9M | 43.6% | $-4,534,087 | -20.0% |
| 2023 | $25.1M | +0.5% | $10.2M | 40.6% | $-4,413,612 | -17.6% |
| 2022 | $25.0M | +2.5% | $11.1M | 44.3% | $-2,349,141 | -9.4% |
| 2021 | $24.4M | -13.6% | $11.6M | 47.5% | $-1,219,092 | -5.0% |
| 2020 | $28.3M | -15.5% | $10.8M | 38.3% | $-5,960,313 | -21.1% |
| 2019 | $33.4M | -6.8% | $12.5M | 37.3% | $-4,658,581 | -13.9% |
| 2018 | $35.9M | +8.1% | $13.6M | 37.9% | $-5,538,309 | -15.4% |
| 2017 | $33.2M | +35.6% | $13.0M | 39.0% | $225K | 0.7% |
| 2016 | $24.5M | +14.2% | $9.3M | 38.0% | $-997,451 | -4.1% |
| 2015 | $21.4M | +10.9% | $7.6M | 35.6% | $-2,643,350 | -12.3% |
| 2014 | $19.3M | +22.0% | $6.4M | 33.1% | $-3,703,317 | -19.1% |
| 2013 | $15.8M | +3.9% | $5.0M | 31.7% | $-3,670,104 | -23.2% |
| 2012 | $15.3M | +37.9% | $5.9M | 38.4% | $-2,003,626 | -13.1% |
| 2011 | $11.1M | - | $4.9M | 44.2% | $-1,882,902 | -17.0% |
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
15+ years return with dividends reinvested.
DCA Calculator
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Peer Comparison
Compare growth, multiples, and margins vs sector.
TGEN — Frequently Asked Questions
Quick answers to the most common questions about buying TGEN stock.
Is TGEN's revenue growth accelerating or slowing?
TGEN revenue is declining -12.9% year-over-year. TTM revenue fell to $26M, contrasting with the 5-year CAGR of -0.9%. The reversal reflects either macro headwinds or company-specific challenges.
What is TGEN's revenue history from 2011 to 2026?
Tecogen Inc. (TGEN) revenue history spans 2011 to 2026. TTM revenue as of 2026 is $26M, growing at -12.9% YoY. The 5-year CAGR is -0.9%. Complete annual and quarterly revenue figures are available on this page, including gross profit, operating income, and margin trends.
What is TGEN's long-term revenue growth rate (CAGR)?
Tecogen Inc.'s 5-year revenue CAGR of -0.9% reflects the variable nature of its business expansion. As of 2026, the current YoY growth rate of -12.9% is below this long-term average. CAGR is the most reliable measure of sustained revenue momentum for TGEN.
Why does TGEN's quarterly revenue fluctuate?
TGEN quarterly revenue can fluctuate significantly between periods. A quarter-over-quarter (QoQ) change does not always indicate a trend; comparing the same quarter year-over-year (YoY) is a more reliable signal for underlying growth. Tecogen Inc.'s revenue data from 2011 to 2026 shows full historical quarterly detail on this page.
How is TGEN's revenue distributed by segment?
TGEN reports revenue broken down by product line and geographic region. The segment breakdown on this page shows which business units contribute the most to total revenue as of the latest fiscal year. Concentration in a single segment above 50% indicates category dependence, while a diversified mix signals more resilient revenue streams.
How does TGEN's revenue compare to industry peers?
Tecogen Inc. (TGEN) with TTM revenue of $26M and -12.9% YoY growth can be benchmarked against sector peers using the comparison table on this page. Revenue growth relative to peers indicates market share gains or losses. The peer section shows TTM revenue, YoY growth, and operating margin for direct comparisons.