Company lists · Data refreshed September 2026

Top 25 Sustainability reporting consultants based in the United States

Name: Sustainability reporting consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 850 companies tracked

RevenueBase identified 850 sustainability reporting consultants headquartered in the United States as of September 2026 and tracks 10,732 professional contacts across them, including 3,513 with verified work emails. New York is the largest hub.

This list covers sustainability reporting consultants 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 22, 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 22, 2026 86% judged on-target in blind review

850Companies

10,732Contacts tracked

3,513Verified emails

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The 25 largest sustainability reporting consultants based in the United States

Ranked by team size

Top 25 of 850 sustainability reporting consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability reporting consultants: 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	Adec Innovations	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,304 contacts →
	Indirect evidence “ADEC Innovations seamlessly delivers fully integrated, cost-effective industry expertise, business process & data management, and software services.” Source: RevenueBase Database · checked Sep 22, 2026
2	OLA	Partial evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	n/a	1,145 contacts →
	Partial 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 22, 2026
3	Uniqus Consultech INC	Strong evidence	San Jose, CA, United StatesHQ checked Sep 22, 2026	501-1,000	675 contacts →
	Strong evidence “Uniqus Consultech is an AI and global tech-enabled consulting company that specializes in Accounting & Reporting Consulting, Governance, Risk & Compliance, Sustainability &…” Source: RevenueBase Database · checked Sep 22, 2026
4	TRIO	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 22, 2026	201-500	383 contacts →
	Indirect evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 22, 2026
5	BSR	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 22, 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 22, 2026
6	NUS Consulting Group	Indirect evidence	Park Ridge, NJ, United StatesHQ checked Sep 22, 2026	201-500	336 contacts →
	Indirect evidence “National Utility Service, Inc.” Source: RevenueBase Database · checked Sep 22, 2026
7	Metiri Group	Indirect evidence	Clovis, CA, United StatesHQ checked Sep 22, 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 22, 2026
8	Keramida INC	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 22, 2026	51-200	152 contacts →
	Partial evidence “Founded in 1988, KERAMIDA is a multidisciplinary Sustainability, EHS & Engineering consulting firm grounded in evidence-based research and development.” Source: RevenueBase Database · checked Sep 22, 2026
9	Worldly	Partial evidence	Concord, CA, United StatesHQ checked Sep 22, 2026	51-200	144 contacts →
	Partial evidence “Worldly is the leading sustainability and supply chain intelligence platform for the consumer goods industry.” Source: RevenueBase Database · checked Sep 22, 2026
10	STOK	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	51-200	141 contacts →
	Indirect evidence “Stok leads organizations to decarbonize now.” Source: RevenueBase Database · checked Sep 22, 2026
11	Measurabl	Partial evidence	San Diego, CA, United StatesHQ checked Sep 22, 2026	201-500	136 contacts →
	Partial evidence “Measurabl is the world's most widely adopted sustainability data platform for real estate.” Source: RevenueBase Database · checked Sep 22, 2026
12	Onepointfive Opf.Degree	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	11-50	133 contacts →
	Partial evidence “At OnePointFive we solve your sustainability focused business challenges by empowering your organization with expert-led solutions, embedded training, and cutting edge tools to…” Source: RevenueBase Database · checked Sep 22, 2026
13	RE Tech Advisors	Indirect evidence	Mclean, VA, United StatesHQ checked Sep 22, 2026	51-200	124 contacts →
	Indirect evidence “RE Tech Advisors, a Legence Company, offers an integrated suite of solutions designed to drive building performance, decrease costs, and overcome any project challenge.” Source: RevenueBase Database · checked Sep 22, 2026
14	Esgauge	Indirect evidence	New York, United StatesHQ checked Sep 22, 2026	11-50	120 contacts →
	Indirect evidence “ESGAUGE is the help desk uniquely designed for the professional service firm seeking customized data on U.S.” Source: RevenueBase Database · checked Sep 22, 2026
15	Cascadia Consulting Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 22, 2026	51-200	110 contacts →
	Partial evidence “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: RevenueBase Database · checked Sep 22, 2026
16	Citadel EHS	Partial evidence	Glendale, CA, United StatesHQ checked Sep 22, 2026	51-200	102 contacts →
	Partial evidence “Founded in 1993, Citadel EHS provides comprehensive environmental, health, safety, and sustainability consulting solutions to meet the needs of both the public and private sectors.” Source: RevenueBase Database · checked Sep 22, 2026
17	Chambers Group, INC	Indirect evidence	Costa Mesa, CA, United StatesHQ checked Sep 22, 2026	51-200	98 contacts →
	Indirect evidence “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Source: RevenueBase Database · checked Sep 22, 2026
18	AKT Peerless	Partial evidence	Saginaw, MI, United StatesHQ checked Sep 22, 2026	51-200	96 contacts →
	Partial evidence “We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.” Source: RevenueBase Database · checked Sep 22, 2026
19	Accountability	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	11-50	92 contacts →
	Indirect evidence “AccountAbility is a global advisory and standards firm that serves business, investors, governments, and multi-lateral organizations.” Source: RevenueBase Database · checked Sep 22, 2026
20	Verdani Partners	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 22, 2026	51-200	89 contacts →
	Partial evidence “Verdani Partners is a full service sustainability consulting firm specialized in corporate sustainability, LEED certification and greening and retrofitting existing buildings.” Source: RevenueBase Database · checked Sep 22, 2026
21	Malk Partners	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	84 contacts →
	Partial evidence “Malk Partners is the foremost consultancy advising private equity firms to create and protect value through environmental, social, and governance (ESG) management.” Source: RevenueBase Database · checked Sep 22, 2026
22	WAP Sustainability	Partial evidence	Chattanooga, United StatesHQ checked Sep 22, 2026	51-200	81 contacts →
	Partial evidence “From WAP Sustainability works with organizations as an outsourced sustainability service.” Source: RevenueBase Database · checked Sep 22, 2026
23	Group14 Engineering, PBC	Indirect evidence	Denver, CO, United StatesHQ checked Sep 22, 2026	11-50	75 contacts →
	Indirect evidence “Group14 Engineering is a Denver-based consulting firm committed to inspiring better buildings where people thrive.” Source: RevenueBase Database · checked Sep 22, 2026
24	Codegreen	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	51-200	72 contacts →
	Partial evidence “CodeGreen is a leading national sustainability and energy efficiency consulting firm.” Source: RevenueBase Database · checked Sep 22, 2026
25	Ckinetics	Partial evidence	Cupertino, CA, United StatesHQ checked Sep 22, 2026	51-200	72 contacts →
	Partial evidence “cKinetics is a Sustainability specialist which provides: Sustainability strategy advisory services, Information products and incubation capital.” Source: RevenueBase Database · checked Sep 22, 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 reporting consultants. 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 reporting consultants.
Partial evidence: Its own public description names part of sustainability reporting consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability reporting consultants. 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 850 sustainability reporting consultants based in the United States

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Sustainability reporting consultants based in the United States at a glance

As of Sep 22, 2026

32.7%Verified-email coverage

12.6Average contacts per company

1-10Median size (employees)

8.5%Largest-city concentration · New York

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

643

11-50

159

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 850 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 reporting consultants, 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 reporting consultants”. 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 reporting consultants), 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 reporting consultants, 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, 3,513 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 22, 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 reporting consultants 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 reporting consultants, 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 reporting consultants are there based in the United States?

RevenueBase identified 850 sustainability reporting consultants 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?

Adec Innovations, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most sustainability reporting consultants?

New York leads with 72 headquartered companies, followed by Chicago (34) and Houston (26).

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 3,513 verified decision-maker contacts tracked across these 850 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 22, 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.