Company lists · Data refreshed September 2026

Top 25 Carbon neutral companies based in the United States

Name: Carbon neutral 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 21, 2026 325 companies tracked

RevenueBase identified 325 carbon neutral companies headquartered in the United States as of September 2026 and tracks 9,421 professional contacts across them, including 4,659 with verified work emails. New York is the largest hub.

This list covers carbon neutral 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 21, 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 21, 2026 86% judged on-target in blind review

325Companies

9,421Contacts tracked

4,659Verified emails

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The 25 largest carbon neutral companies based in the United States

Ranked by team size

Top 25 of 325 carbon neutral companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to carbon neutral 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	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 21, 2026
2	Franklin Energy	Partial evidence	Port Washington, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	838 contacts →
	Partial 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 21, 2026
3	Energy Solutions	Partial evidence	Oakland, CA, United StatesHQ checked Sep 21, 2026	201-500	772 contacts →
	Partial 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 21, 2026
4	Watershed	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	529 contacts →
	Indirect evidence “Watershed is the enterprise sustainability platform.” Source: RevenueBase Database · checked Sep 21, 2026
5	Veregy	Indirect evidence	Phoenix, MO, United StatesHQ checked Sep 21, 2026	501-1,000	383 contacts →
	Indirect evidence “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Source: RevenueBase Database · checked Sep 21, 2026
6	TRIO	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 21, 2026	201-500	383 contacts →
	Indirect evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 21, 2026
7	3degrees Group, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	324 contacts →
	Indirect evidence “3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Source: RevenueBase Database · checked Sep 21, 2026
8	Nuverra Environmental Solutions	Indirect evidence	Scottsdale, AZ, United StatesHQ checked Sep 21, 2026	501-1,000	201 contacts →
	Indirect evidence “Nuverra Environmental Solutions is a company dedicated to the protection, enhancement and advancement of environmental solutions.” Source: RevenueBase Database · checked Sep 21, 2026
9	Anew Climate	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 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 21, 2026
10	Synergy Companies	Indirect evidence	Fresno, CA, United StatesHQ checked Sep 21, 2026	501-1,000	124 contacts →
	Indirect evidence “Synergy Companies is the largest energy services companies in California and provides a comprehensive approach to energy efficiency and environmental solutions in both the…” Source: RevenueBase Database · checked Sep 21, 2026
11	Cascadia Consulting Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	51-200	110 contacts →
	Indirect evidence “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: RevenueBase Database · checked Sep 21, 2026
12	Ecoengineers	Indirect evidence	Des Moines, IA, United StatesHQ checked Sep 21, 2026	51-200	109 contacts →
	Indirect evidence “EcoEngineers, an LRQA company, is a consulting, auditing, and advisory firm with an exclusive focus on the energy transition and decarbonization.” Source: RevenueBase Database · checked Sep 21, 2026
13	Climeco	Indirect evidence	Houston, TX, United StatesHQ checked Sep 21, 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 21, 2026
14	Greengen	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 21, 2026	11-50	60 contacts →
	Indirect evidence “GreenGen is a global leader in energy and sustainability solutions, empowering organizations to Operate in the Green®.” Source: RevenueBase Database · checked Sep 21, 2026
15	Carbonbetter	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	11-50	58 contacts →
	Indirect evidence “We believe that what’s good for our planet is good for business.” Source: RevenueBase Database · checked Sep 21, 2026
16	Partner Energy	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Indirect evidence “Partner Energy, Inc.” Source: RevenueBase Database · checked Sep 21, 2026
17	Pachama	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	55 contacts →
	Partial evidence “Pachama has now been acquired by Carbon Direct.” Source: RevenueBase Database · checked Sep 21, 2026
18	Foresight Management	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 21, 2026	51-200	49 contacts →
	Indirect evidence “We're your partner in sustainability and energy management, focused on working with manufacturers and consumer brands.” Source: RevenueBase Database · checked Sep 21, 2026
19	Altura	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 21, 2026	51-200	47 contacts →
	Partial evidence “Altura is a new breed of engineering consulting firm, delivering everything it takes to guide owners to realizing climate and carbon goals by improving energy, environmental, and…” Source: RevenueBase Database · checked Sep 21, 2026
20	Bonneville Environmental Foundation BEF	Indirect evidence	Portland, OR, United StatesHQ checked Sep 21, 2026	11-50	46 contacts →
	Indirect evidence “A national nonprofit, BEF empowers businesses to be in balance with the environment through a full suite of environmental products, educational and community engagement programs…” Source: RevenueBase Database · checked Sep 21, 2026
21	Rubicon Carbon	Partial evidence	Marina Del Rey, CA, United StatesHQ checked Sep 21, 2026	11-50	41 contacts →
	Partial evidence “Rubicon Carbon is a next-generation carbon solutions provider.” Source: RevenueBase Database · checked Sep 21, 2026
22	Lifestyle Marketing	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 2026	51-200	40 contacts →
	Indirect evidence “Lifestyle Marketing is a leader in creating a cleaner planet, awarding those passionate all things sustainable with a career inside the fastest growing industry.” Source: RevenueBase Database · checked Sep 21, 2026
23	Lynam Industries, INC	Indirect evidence	Fontana, CA, United StatesHQ checked Sep 21, 2026	51-200	36 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
24	Carbonquest	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	11-50	36 contacts →
	Partial evidence “Leading the QUEST for decarbonization by providing urban building owners advanced technologies and solutions that ENABLE acceleration of global carbon reduction NOW CarbonQuest…” Source: RevenueBase Database · checked Sep 21, 2026
25	Verdical Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Established in 2012, Verdical Group has developed a nationally known brand and industry leading reputation as a sustainability consulting firm focused on decarbonizing the built…” Source: RevenueBase Database · checked Sep 21, 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: carbon neutral 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 carbon neutral companies.
Partial evidence: Its own public description names part of carbon neutral companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name carbon neutral 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 325 carbon neutral companies based in the United States

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Carbon neutral companies based in the United States at a glance

As of Sep 21, 2026

49.5%Verified-email coverage

29.0Average contacts per company

1-10Median size (employees)

6.2%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

199

11-50

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 325 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 carbon neutral 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 “carbon neutral 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 carbon neutral 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 carbon neutral 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, 4,659 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 21, 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.

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 carbon neutral 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 carbon neutral companies are there based in the United States?

RevenueBase identified 325 carbon neutral 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?

Mckinstry, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most carbon neutral companies?

New York leads with 20 headquartered companies, followed by Houston (17) and San Francisco (13).

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 4,659 verified decision-maker contacts tracked across these 325 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 21, 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.