Fuel Tech, Inc. revenue by segment FTEK

Fuel Tech, Inc. splits its revenue 2 ways in its filings. By operating segments, the largest line in fiscal 2025, which ended Dec 31, 2025 was FUELCHEM at $17.8 million, 67% of the total. By sales mix, the largest line in fiscal 2025, which ended Dec 31, 2025 was FUELCHEM at $17.8 million, 67% of the total.

USD in millions. The percent under a figure is the change from the year before.

Line
FY 2026
Sep 30, 2026
FY 2025
Dec 31, 2025
FY 2024
Dec 31, 2024
FY 2023
Dec 31, 2023
FY 2022
Dec 31, 2022
FY 2021
Dec 31, 2021
FY 2020
Dec 31, 2020
FY 2019
Dec 31, 2019
FY 2018
Dec 31, 2018
FY 2017
Dec 31, 2017
FY 2016
Dec 31, 2016
Revenue
28
27
25
27
27
24
23
30
57
45
55
Operating segments
FUELCHEM
18
+9.2%
share 63.0%
18
+27.9%
share 66.6%
14
+2.2%
share 55.3%
14
-16.8%
share 50.2%
16
-5.9%
share 60.7%
17
+24.1%
share 71.6%
14
share 62.1%
—
—
—
—
Air Pollution Control
11
+27.4%
share 37.0%
9
-20.8%
share 33.4%
11
-16.6%
share 44.7%
13
+27.2%
share 49.8%
11
+53.7%
share 39.3%
7
-19.4%
share 28.4%
9
share 37.9%
—
—
—
—
Sales mix
FUELCHEM
18
+9.2%
share 63.0%
18
+27.9%
share 66.6%
14
+2.2%
share 55.3%
14
-16.8%
share 50.2%
16
-5.9%
share 60.7%
17
+24.1%
share 71.6%
14
share 62.1%
—
—
—
—
Technology Solutions
8
+72.4%
share 27.3%
5
-31.4%
share 20.3%
8
-16.8%
share 31.4%
9
+19.7%
share 35.1%
8
+89.4%
share 29.5%
4
-26.1%
share 17.3%
6
share 25.1%
—
—
—
—
Spare Parts
1
-12.5%
share 5.2%
2
+7.6%
share 6.5%
2
-27.8%
share 6.4%
2
+145.8%
share 8.3%
1
-19.9%
share 3.4%
1
+25.6%
share 4.7%
1
share 4.0%
—
—
—
—
How these figures are calculated

Annual columns are full-year amounts from the annual report (Form 10-K, 20-F, or 40-F). If a company restates a year, the latest filed number is shown. USD in millions. Each group is a separate split of total revenue, so the groups are not added together. Share of revenue is that line divided by total revenue. The first column adds the latest year-to-date segment amount to the last fiscal year and subtracts the year-ago year-to-date amount. More on our methodology.

Company profile

Industry
Industrial & Commercial Fans & Blowers & Air Purifing Equip (SIC 3564)
Listed as
FTEK (Nasdaq)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Warrenville, IL
SEC filer status
Non-accelerated filer, Smaller reporting company
SEC CIK
846913
Former names
FUEL TECH N V (until Oct 5, 2006)

Other Industrial & Commercial Fans & Blowers & Air Purifing Equip companies

Source: SEC EDGAR filings. This is company-reported data, not investment advice.