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Top Climate tech companies in Denver

Companies decarbonising power, transport, agriculture, and industry. Filtered to companies headquartered in Denver.

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Built from a search like: “Top Climate tech companies in Denver”

Ranked by current headcount across Climate tech companies headquartered in Denver. Refreshed daily.

  1. 1
    HPC Industrial powered by Clean Harbors· Deer Park, Texas, United States
    • 961 employees
  2. 2
    HydroChemPSC· Deer Park, Texas, United States
    • 718 employees
    • Founded 1977
  3. 3
    IDE Technologies· Kadima - Zoran, Center District, Israel
    • 628 employees
    • Founded 1965
  4. 4
    HydroChem LLC· Deer Park, Texas, United States
    • 490 employees
    • Founded 1938
  5. 5
    Aventia· Denver, Colorado, United States
    • 420 employees
    • Founded 2022
Reveal 161 more·100 free credits, no card

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 166 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

Refolk pulled Climate tech companies headquartered in Denver from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 10 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 08:19:35 GMT

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