Top Climate tech companies in Denver
Companies decarbonising power, transport, agriculture, and industry. Filtered to companies headquartered in Denver.
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- IndustryClimate tech
- HQDenver
- Matches158
Built from a search like: “Top Climate tech companies in Denver”
Ranked by current headcount across Climate tech companies headquartered in Denver. Refreshed monthly.
- 1IDE Technologies· Kadima, Center District, Israel
A world leader in water treatment solutions, IDE specializes in the development, engineering, construction and operation of enhanced desalination and industrial water treatment plants.IDE believes in partnership with customers. Partnership is about applying nearly 60 years of ground-breaking advances in water treatment technologies to serve your needs. Partnership is about delivering projects on schedule, within budget and above specifications, while adhering to strict health, safety and environmental regulations. Partnership is about bringing added value in technological innovation by highly committed people. IDE works with our partners to deliver full satisfaction.
- 637 employees
- Founded 1965
- 2Aventia· Denver, Colorado, United States
Aventia is a nationally recognized environmental firm delivering comprehensive consulting, field services, and technology-driven solutions to public and private sector clients in more than 40 states.With over 400 team members, Aventia helps clients navigate complex environmental regulations, implement sustainable solutions, and create healthier communities through collaborative partnerships.
- 419 employees
- Founded 2022
- 3Delaware Department of Natural Resources and Environmental Control· Dover, Delaware, United States
The Delaware Department of Natural Resources and Environmental Control (DNREC) envisions a Delaware that offers a healthy environment where people embrace a commitment to the protection, enhancement and enjoyment of the environment in their daily lives; where Delawareans’ stewardship of natural resources ensures the sustainability of these resources for the appreciation and enjoyment of future generations; and where people recognize that a healthy environment and a strong economy support one another.
- 315 employees
- Founded 1979
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- 4LVI Services, Inc.· Denver, Colorado, United States
LVI is ranked as the top demolition contractor in the world by D&Ri since 2007 and top abatement contractor in North America by ENR since 1999. With a national network of offices, we’re ready to serve both public and private sector clients in any environment, from densely urban to isolated and remote. Our focus is simple - lead with safety, build relationships, and deliver quality. The result? An experience our clients describe as exceptional.Key Projects:Superstorm Sandy Disaster ResponsePentagon RenovationsNASA JFK Space Center Launch Complex 39B DemolitionLower Manhattan Deutsche Bank Building DemolitionSuperdome Phase II Disaster ResponseMadison Square Garden RenovationsYankee Stadium DemolitionConsolidated Edison Power Plant DemolitionNASA JFK Space Center Vehicle Assembly Building DismantlementUniversity of Illinois Nuclear Reactor D&DStardust Casino & Hotel DemolitionKaiser Sunset Boulevard Hospital DemolitionCrucible Steel Plant DismantlementSan Francisco Bay Oil Spill Disaster ResponseSmithsonian Institution AbatementLAX, Terminal 6 RenovationsIndustries Served:Government, Power, Nuclear, Industrial Manufacturing, Pharma, Oil & Gas, Commercial, Finance, Education, Healthcare, Hospitality, Retail, and Public Use Facilities.
- 215 employees
- Founded 1986
- 5STGS - Groupe STURNO· Marcey-les-Grèves, Saint-Martin-des-Champs, Saint-Jean-de-la-Haize, Saint-Senier-sous-Avranches, La Godefroy, Ponts, Vains, Le Val-Saint-Père, La Gohannière, Saint-Loup, Saint-Brice, Avranches, Saint-Ovin, Normandy, France
Chez STGS, nous accompagnons les collectivités locales dans la gestion de leur service d’eau et d’assainissement. Depuis plus de 30 ans, nous assurons le traitement et la distribution d’eau potable, la collecte et l’épuration des eaux usées, le traitement des eaux pluviales, et des travaux de canalisations. STGS a également étoffé ces dernières années ses activités de services au travers de la gestion clientèle, de la conception, de la mise en place de process et de réalisations (travaux neufs et mise en route de stations), du contrôle et du diagnostic des réseaux, de l’hydrocurage et de la détection de réseaux, du lavage de réservoirs d’eau potable, et la gestion des SPANC (Service Public d’Assainissement Non Collectif).Au service des collectivités et de nos clients, nous sommes fiers de la diversité de nos métiers et de nos services que nous exerçons sur le grand ouest : La Normandie, La Bretagne et le Centre-Pays de Loire. Plus de 280 collaborateurs sont au service d'environ 600 communes, soit 345 000 abonnés en eau et assainissement. La clé de notre succès ? Notre connaissance des métiers de l’eau, une dynamique de services et une proximité auprès de nos clients avec une quinzaine de bureaux de secteurs et 4 agences, créatrices d’emplois sur tout le grand ouest. STGS, c’est aussi la fierté de notre parcours puisque nous sommes aujourd’hui parmi les premières PME dans les domaines des services d’eau et d’assainissement auprès des collectivités locales.
- 188 employees
- Founded 1990
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 158 matching companies in Refolk’s index, this is a good map of where the Climate tech talent in Denver lives - 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 Denver hiring senior staff” or “founders of Climate tech companies in Denver who left in the last 12 months” and Refolk returns a ranked shortlist with the evidence that earned each person a spot.
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Last refreshed: Fri, 16 Oct 2026 19:07:56 GMT
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How is this ranking built?
The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.
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