Company lists · Data refreshed September 2026

Top 25 Climate change companies based in the United States

Name: Climate change companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 534 companies tracked

RevenueBase identified 534 climate change companies headquartered in the United States as of September 2026 and tracks 18,263 professional contacts across them, including 7,264 with verified work emails. New York is the largest hub.

This list covers climate change companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

534Companies

18,263Contacts tracked

7,264Verified emails

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The 25 largest climate change companies based in the United States

Ranked by team size

Top 25 of 534 climate change companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to climate change companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Carrier	Partial evidence	Palm Beach Gardens, FL, United StatesHQ checked Sep 19, 2026	10001+	7,665 contacts →
	Partial evidence “Carrier is a global leader in intelligent climate and energy solutions, pioneering sustainable innovations in climate technologies.” Source: RevenueBase Database · checked Sep 19, 2026
2	Environmental Defense Fund	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,352 contacts →
	Partial evidence “We are Environmental Defense Fund, a leading environmental nonprofit focused on stabilizing the climate while helping build strong and healthy communities.” Source: RevenueBase Database · checked Sep 19, 2026
3	Franklin Energy	Indirect evidence	Port Washington, WI, United StatesHQ checked Sep 19, 2026	1,001-5,000	838 contacts →
	Indirect evidence “Franklin Energy delivers end-to-end sustainability solutions through a portfolio of intelligent products and services that lower energy costs, reduce carbon and waste, and grow…” Source: RevenueBase Database · checked Sep 19, 2026
4	Energy Solutions	Strong evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	201-500	772 contacts →
	Strong evidence “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Source: RevenueBase Database · checked Sep 19, 2026
5	Climatebase	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	n/a	759 contacts →
	Partial evidence “Climatebase is the community for climate & sustainability professionals, and the world's #1 platform for green jobs.” Source: RevenueBase Database · checked Sep 19, 2026
6	Atlas Renewable Energy	Indirect evidence	Miami, FL, United StatesHQ checked Sep 19, 2026	201-500	500 contacts →
	Indirect evidence “Atlas Renewable Energy delivers clean energy at scale.” Source: RevenueBase Database · checked Sep 19, 2026
7	TRIO	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 19, 2026	201-500	383 contacts →
	Indirect evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 19, 2026
8	3degrees Group, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	201-500	324 contacts →
	Partial evidence “3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Source: RevenueBase Database · checked Sep 19, 2026
9	Baywa R.E. Americas	Indirect evidence	Carlsbad, CA, United StatesHQ checked Sep 19, 2026	201-500	244 contacts →
	Indirect evidence “rethinkenergy BayWa r.e is a leading global renewable energy company committed to delivering best-in-class projects, services and solutions.” Source: RevenueBase Database · checked Sep 19, 2026
10	Anew Climate	Partial evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	201-500	200 contacts →
	Partial evidence “Anew Climate is a global leader of diverse climate solutions, bringing innovative products and services to the public and private sectors to help reduce or offset their carbon…” Source: RevenueBase Database · checked Sep 19, 2026
11	Carbon Direct	Partial evidence	New York, United StatesHQ checked Sep 19, 2026	51-200	172 contacts →
	Partial evidence “Carbon Direct is a trusted energy and climate solutions company that combines world-class scientific expertise, technical rigor, and market insights to help clients achieve their…” Source: RevenueBase Database · checked Sep 19, 2026
12	Cleanchoice Energy	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	155 contacts →
	Partial evidence “CleanChoice Energy is a cleantech company that empowers people and businesses to easily access climate solutions.” Source: RevenueBase Database · checked Sep 19, 2026
13	Slipstream	Indirect evidence	Madison, WI, United StatesHQ checked Sep 19, 2026	51-200	146 contacts →
	Indirect evidence “We're a nonprofit headquartered in Madison, WI with an office in Chicago and remote staff across the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
14	Luminace	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	51-200	126 contacts →
	Indirect evidence “Luminace is one of the largest fully integrated decarbonization-as-a-service solution providers in North America, sponsoring accessible, reliable and renewable energy…” Source: RevenueBase Database · checked Sep 19, 2026
15	Climeco	Indirect evidence	Houston, TX, United StatesHQ checked Sep 19, 2026	51-200	96 contacts →
	Indirect evidence “ClimeCo is an award-winning leader in decarbonization, empowering global organizations with customized sustainability pathways.” Source: RevenueBase Database · checked Sep 19, 2026
16	C-Quest Capital	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	94 contacts →
	Indirect evidence “C-Quest Capital is a social impact project developer & carbon finance business that works in the poorest communities around the world providing access to sustainable energy…” Source: RevenueBase Database · checked Sep 19, 2026
17	Puresky Energy	Indirect evidence	Denver, CO, United StatesHQ checked Sep 19, 2026	51-200	86 contacts →
	Indirect evidence “We lead the charge in providing renewable energy solutions that invigorate progress, enhance lives, and leave a legacy of environmental stewardship.” Source: RevenueBase Database · checked Sep 19, 2026
18	Origis Energy Services	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	51-200	80 contacts →
	Indirect evidence “Origis Energy is accelerating the transition to a carbon-free future by Reimagining Zero.” Source: RevenueBase Database · checked Sep 19, 2026
19	Enduring Planet	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	79 contacts →
	Partial evidence “Working capital and fractional financial services for Climate startups and SMBs.” Source: RevenueBase Database · checked Sep 19, 2026
20	Tradewater	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	73 contacts →
	Strong evidence “A certified B Corp, Tradewater directly combats climate change by identifying, collecting, and eliminating the release of non-CO₂ superpollutants, including refrigerants in old…” Source: RevenueBase Database · checked Sep 19, 2026
21	Presidio	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “WE ARE THE LAST, BEST STEWARD FOR AMERICA’S OIL AND GAS WELLS Our mission is to be the most operationally and emissions efficient energy transition company in the United States.” Source: RevenueBase Database · checked Sep 19, 2026
22	RUN On Climate	Partial evidence	Burlington, VT, United StatesHQ checked Sep 19, 2026	n/a	70 contacts →
	Partial evidence “Run On Climate’s mission is to build the climate movement by empowering those devoted to climate justice with the skills and resources they need to move their community off of…” Source: RevenueBase Database · checked Sep 19, 2026
23	Center For Climate And Energy Solutions C2es	Strong evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Strong evidence “The Center for Climate and Energy Solutions (C2ES) is an independent, nonpartisan, nonprofit organization working to forge practical solutions to climate change.” Source: RevenueBase Database · checked Sep 19, 2026
24	Project Drawdown	Partial evidence	St Paul, MN, United StatesHQ checked Sep 19, 2026	11-50	67 contacts →
	Partial evidence “Project Drawdown is the world’s leading guide to science-based climate solutions.” Source: RevenueBase Database · checked Sep 19, 2026
25	AMBEE	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 19, 2026	11-50	61 contacts →
	Partial evidence “Ambee is a leading provider of global climate data and climate-based solutions.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: climate change companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names climate change companies.
Partial evidence: Its own public description names part of climate change companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate change companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 534 climate change companies based in the United States

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Climate change companies based in the United States at a glance

As of Sep 19, 2026

39.8%Verified-email coverage

34.2Average contacts per company

1-10Median size (employees)

9.0%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

328

11-50

142

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 534 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among climate change companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “climate change companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names climate change companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among climate change companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 7,264 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Climate change companies by metro

Climate change companies in New York48
Climate change companies in San Francisco31

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names climate change companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many climate change companies are there based in the United States?

RevenueBase identified 534 climate change companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Carrier, headquartered in Palm Beach Gardens, tops this list with the largest team on record.

Which city has the most climate change companies?

New York leads with 48 headquartered companies, followed by San Francisco (31) and Washington (21).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,264 verified decision-maker contacts tracked across these 534 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.