Top Climate tech companies in Denver
Companies decarbonising power, transport, agriculture, and industry. Filtered to companies headquartered in Denver.
- IndustryClimate tech
- HQDenver
- Matches171
Built from a search like: “Top Climate tech companies in Denver”
Ranked by current headcount across Climate tech companies headquartered in Denver. Refreshed daily.
- 1HPC Industrial powered by Clean Harbors· Deer Park, Texas, United States
- 910 employees
- 2UDS· Valley Center, Kansas, United States
- 763 employees
- Founded 2008
- 3HydroChemPSC· Deer Park, Texas, United States
- 728 employees
- Founded 1977
- 4IDE Technologies· Kadima - Zoran, Center District, Israel
- 612 employees
- Founded 1965
- 5HydroChem LLC· Deer Park, Texas, United States
- 490 employees
- Founded 1938
- 6Aventia· Denver, Colorado, United States
- 334 employees
- Founded 2022
- 7Kimble Companies· Dover, Ohio, United States
- 326 employees
- Founded 1948
- 8Delaware Department of Natural Resources and Environmental Control· Dover, Delaware, United States
- Series F
- 299 employees
- Founded 1979
- 9LVI Services, Inc.· Denver, Colorado, United States
- 217 employees
- Founded 1986
- 10Mile High Youth Corps· Denver, Colorado, United States
- 138 employees
- Founded 1992
- 11USA Environment, LP· Deer Park, Texas, United States
- 131 employees
- Founded 1991
- 12RGS Energy· Denver, Colorado, United States
- 128 employees
- Founded 1978
- 13ECO-PAN INC.· Denver, Colorado, United States
- 121 employees
- Founded 1992
- 14BlueGen Ltd.· Kfar Saba, Center District, Israel
- 120 employees
- Founded 1988
- 15National Environmental Health Association (NEHA)· Denver, Colorado, United States
- 110 employees
- Founded 1937
- 16Bio-One Inc· Denver, Colorado, United States
- 102 employees
- Founded 2008
- 17EDF power solutions Israel· Hod HaSharon, Center District, Israel
- 97 employees
- Founded 2009
- 18First In Rescue Safety and Training, LLC· Deer Park, Texas, United States
- 94 employees
- Founded 2008
- 19AK Industries, Inc.· Plymouth, Indiana, United States
- 91 employees
- Founded 1981
- 20Neptune and Company, Inc.· Denver, Colorado, United States
- 90 employees
- Founded 1992
- 21DHVmed· Kfar Saba, Center District, Israel
- 90 employees
- Founded 1996
- 22El-Mor Renewable Energy· Zur Izhak, Center District, Israel
- 87 employees
- 23WRT· Denver, Colorado, United States
- 86 employees
- Founded 2002
- 24Volta Solar· Petah Tikva, Center District, Israel
- 86 employees
- Founded 2017
- 25Geotech Environmental Equipment, Inc.· Denver, Colorado, United States
- 84 employees
- Founded 1978
Find engineers at Climate tech companies in Denver
Denver has long been a hub for Climate tech, and the list above ranks the largest Climate tech companies headquartered there by current headcount, drawn from public LinkedIn and Crunchbase records. With 171 matching companies in our index, this is a good map of where the Climate tech talent in Denverlives — useful whether you’re recruiting, partnering, or sizing a market.
The biggest Climate tech companies in Denver tend to be the gravitational centres for specialised talent — senior engineers, ML researchers, applied scientists, designers — while the smaller ones compete on speed, equity, and proximity to founders.
Refolk converts this list into a live search. Ask for “Climate tech engineers in Denverhiring senior staff” or “founders of Climate tech companies in Denverwho left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.
How this list is built
Last refreshed: Thu, 07 May 2026 06:47:20 GMT
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