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EvoAir vs Tecogen: revenue, profit, margins and growth compared

EvoAir brought in $284.7K of revenue in fiscal 2025, Tecogen $27.1M in fiscal 2025. Revenue changed by -9.5% at EvoAir and +19.7% at Tecogen on the year before, so Tecogen grew faster. EvoAir kept -5,138.3% of its revenue as net profit, Tecogen -30.5%. Free cash flow was -$1.2M at EvoAir and -$10.3M at Tecogen.

Side by side, latest fiscal year

EVOHTGEN
Fiscal year endedFY2025 (August 31, 2025)FY2025 (December 31, 2025)
Revenue$284.7K$27.1M
Revenue growth-9.5%+19.7%
Net income-$14.6M-$8.2M
Net margin-5,138.3%-30.5%
Free cash flow-$1.2M-$10.3M
Free cash flow margin-413.0%-38.1%
Earnings per share (diluted)-$0.55-$0.30
Cash$93.3K$12.4M
Debtn/an/a
Price to earningsn/an/a
Market value$625.2M$95.4M
Dividend yieldn/an/a
Rank by revenue in sector#569 of 587 · Industrials#464 of 587 · Industrials

Over the years

Revenue
EVOH FY2021: $774.8KEVOH FY2022: $1.2MEVOH FY2023: $388KEVOH FY2024: $314.7KEVOH FY2025: $284.7KTGEN FY2018: $35.9MTGEN FY2019: $33.4MTGEN FY2020: $28.3MTGEN FY2021: $24.4MTGEN FY2022: $25MTGEN FY2023: $25.1MTGEN FY2024: $22.6MTGEN FY2025: $27.1MFY18FY19FY20FY21FY22FY23FY24FY25
EVOH $284.7KTGEN $27.1M
Net income
EVOH FY2019: -$855EVOH FY2019: -$15.7KEVOH FY2020: -$14.4KEVOH FY2021: -$1.1MEVOH FY2022: -$5.2MEVOH FY2023: -$6.1MEVOH FY2024: -$25.9MEVOH FY2025: -$14.6MTGEN FY2018: -$5.7MTGEN FY2019: -$4.7MTGEN FY2020: -$6.2MTGEN FY2021: $3.7MTGEN FY2022: -$2.4MTGEN FY2023: -$4.6MTGEN FY2024: -$4.8MTGEN FY2025: -$8.2MFY18FY19FY20FY21FY22FY23FY24FY25
EVOH -$14.6MTGEN -$8.2M
Net margin
EVOH FY2021: -140.0%EVOH FY2022: -439.4%EVOH FY2023: -1,561.2%EVOH FY2024: -8,222.8%EVOH FY2025: -5,138.3%TGEN FY2018: -15.9%TGEN FY2019: -14.1%TGEN FY2020: -21.8%TGEN FY2021: 15.1%TGEN FY2022: -9.8%TGEN FY2023: -18.3%TGEN FY2024: -21.0%TGEN FY2025: -30.5%FY18FY19FY20FY21FY22FY23FY24FY25
EVOH -5,138.3%TGEN -30.5%
Revenue growth
EVOH FY2022: +53.7%EVOH FY2023: -67.4%EVOH FY2024: -18.9%EVOH FY2025: -9.5%TGEN FY2019: -6.8%TGEN FY2020: -15.5%TGEN FY2021: -13.6%TGEN FY2022: +2.5%TGEN FY2023: +0.5%TGEN FY2024: -10.0%TGEN FY2025: +19.7%FY19FY20FY21FY22FY23FY24FY25
EVOH -9.5%TGEN +19.7%
Free cash flow
EVOH FY2021: -$2.1MEVOH FY2022: -$2.1MEVOH FY2023: -$1.7MEVOH FY2024: -$1.1MEVOH FY2025: -$1.2MTGEN FY2018: -$4.7MTGEN FY2019: -$4.6MTGEN FY2020: $1.3MTGEN FY2021: $373.6KTGEN FY2022: -$1.7MTGEN FY2023: -$864.7KTGEN FY2024: $3.1MTGEN FY2025: -$10.3MFY18FY19FY20FY21FY22FY23FY24FY25
EVOH -$1.2MTGEN -$10.3M

Fiscal years as each company reports them; the two may end in different months.

Questions about EvoAir and Tecogen

Which is bigger by revenue, EvoAir or Tecogen?

Tecogen is bigger by revenue: $27.1M in fiscal 2025, against $284.7K for EvoAir in fiscal 2025.

Which keeps more of its revenue as profit, EvoAir or Tecogen?

EvoAir had a net margin of -5,138.3% in fiscal 2025; Tecogen had -30.5% in fiscal 2025.

Which grew revenue faster, EvoAir or Tecogen?

In their latest fiscal years revenue changed by -9.5% at EvoAir and +19.7% at Tecogen.

Where do these numbers come from?

From the annual reports each company files with the SEC (10-K, or 20-F and 40-F for foreign companies), read from their XBRL data. Margins and growth are simple arithmetic on those figures. Nothing here is a recommendation.

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