Company lists · Data refreshed September 2026

Top 25 Sustainability companies based in the United States

Name: Sustainability 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 2,656 companies tracked

RevenueBase identified 2,656 sustainability companies headquartered in the United States as of September 2026 and tracks 41,620 professional contacts across them, including 14,771 with verified work emails. New York is the largest hub.

This list covers sustainability 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

2,656Companies

41,620Contacts tracked

14,771Verified emails

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The 25 largest sustainability companies based in the United States

Ranked by team size

Top 25 of 2,656 sustainability 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 sustainability 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	Chemonics International	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1,001-5,000	4,410 contacts →
	Indirect evidence “In a world where conditions are changing faster, resources are tighter, and the path to results is increasingly complex, delivery matters more than ever.” Source: RevenueBase Database · checked Sep 19, 2026
2	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 19, 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 19, 2026
3	Montrose Environmental Group	Indirect evidence	Little Rock, AR, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,529 contacts →
	Indirect evidence “Onterris (formerly Montrose Environmental Group) was one of the first to see environmental responsibility as not just an imperative but as a strategic asset.” Source: RevenueBase Database · checked Sep 19, 2026
4	OLA	Strong evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	n/a	1,145 contacts →
	Strong evidence “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Source: RevenueBase Database · checked Sep 19, 2026
5	Triumvirate Environmental	Indirect evidence	Somerville, MA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,068 contacts →
	Indirect evidence “Triumvirate Environmental provides sustainable environmental solutions to leading companies in the Life Sciences, Healthcare, Education, and Advanced Manufacturing markets.” Source: RevenueBase Database · checked Sep 19, 2026
6	Rehrig Pacific Company	Indirect evidence	Monterey Park, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,049 contacts →
	Indirect evidence “Rehrig Pacific has over a century of experience as a global solutions provider and is a leading authority on sustainable supply chain solutions.” Source: RevenueBase Database · checked Sep 19, 2026
7	Franklin Energy	Strong evidence	Port Washington, WI, United StatesHQ checked Sep 19, 2026	1,001-5,000	838 contacts →
	Strong 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
8	Energy Solutions	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	201-500	772 contacts →
	Indirect 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
9	Drummond Company, INC	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 19, 2026	5,001-10,000	706 contacts →
	Indirect evidence “Every day, on every project, at every level of this company, we are committed to our employees, our customers, the communities where we operate, and the global environment.” Source: RevenueBase Database · checked Sep 19, 2026
10	Watershed	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	201-500	529 contacts →
	Strong evidence “Watershed is the enterprise sustainability platform.” Source: RevenueBase Database · checked Sep 19, 2026
11	Dupont Water Solutions	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 19, 2026	10001+	470 contacts →
	Indirect evidence “We’re helping companies in every industry, in every corner of the globe make real progress.” Source: RevenueBase Database · checked Sep 19, 2026
12	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
13	Rubicon	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	201-500	377 contacts →
	Indirect evidence “Rubicon is a waste sciences company that helps national organizations, small and mid-sized businesses, and everyday consumers simplify and optimize their environmental operations…” Source: RevenueBase Database · checked Sep 19, 2026
14	P2s	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 19, 2026	201-500	375 contacts →
	Indirect evidence “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Source: RevenueBase Database · checked Sep 19, 2026
15	BSR	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	369 contacts →
	Indirect evidence “BSR® is a sustainable business network that provides global insights, strategic advisory services, and collaborations to nearly 250 member companies in Asia, Europe, and North…” Source: RevenueBase Database · checked Sep 19, 2026
16	NUS Consulting Group	Indirect evidence	Park Ridge, NJ, United StatesHQ checked Sep 19, 2026	201-500	336 contacts →
	Indirect evidence “National Utility Service, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
17	Envita Solutions	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 19, 2026	201-500	327 contacts →
	Strong evidence “Envita Solutions is a premier supplier of customized waste and recycling programs, industrial services, and transformative sustainability solutions.” Source: RevenueBase Database · checked Sep 19, 2026
18	3degrees Group, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
19	Environmental Consulting & Technology, Inc. ECT	Strong evidence	Gainesville, FL, United StatesHQ checked Sep 19, 2026	201-500	305 contacts →
	Strong evidence “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Source: RevenueBase Database · checked Sep 19, 2026
20	Cascade Energy	Indirect evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	201-500	288 contacts →
	Indirect evidence “At Cascade Energy, we believe in better.” Source: RevenueBase Database · checked Sep 19, 2026
21	Ceres, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	51-200	241 contacts →
	Indirect evidence “Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world.” Source: RevenueBase Database · checked Sep 19, 2026
22	Metiri Group	Indirect evidence	Clovis, CA, United StatesHQ checked Sep 19, 2026	n/a	233 contacts →
	Indirect evidence “Appl Inc is an environmental services company based out of 908 N Temperance Ave, Clovis, CA, United States.” Source: RevenueBase Database · checked Sep 19, 2026
23	Dr. Bronner's	Indirect evidence	Vista, CA, United StatesHQ checked Sep 19, 2026	201-500	232 contacts →
	Indirect evidence “Dr.” Source: RevenueBase Database · checked Sep 19, 2026
24	PEG	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 19, 2026	201-500	214 contacts →
	Strong evidence “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Source: RevenueBase Database · checked Sep 19, 2026
25	Dalkia Energy Solutions	Strong evidence	Beverly, MA, United StatesHQ checked Sep 19, 2026	201-500	210 contacts →
	Strong evidence “Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” 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: sustainability 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 sustainability companies.
Partial evidence: Its own public description names part of sustainability companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability 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 2,656 sustainability companies based in the United States

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Sustainability companies based in the United States at a glance

As of Sep 19, 2026

35.5%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

6.7%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,806

11-50

609

51-200

161

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 2,656 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 sustainability 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 “sustainability 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 sustainability 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 sustainability 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, 14,771 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.

Sustainability companies by metro

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 sustainability 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 sustainability companies are there based in the United States?

RevenueBase identified 2,656 sustainability 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?

Chemonics International, headquartered in Washington, tops this list with the largest team on record.

Which city has the most sustainability companies?

New York leads with 179 headquartered companies, followed by Los Angeles (97) and San Francisco (65).

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 14,771 verified decision-maker contacts tracked across these 2,656 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.