Company lists · Data refreshed September 2026

Top 25 Sustainability technology integrators worldwide

Name: Sustainability technology integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 7,657 companies tracked

RevenueBase identified 7,657 sustainability technology integrators worldwide as of September 2026 and tracks 89,758 professional contacts across them, including 29,629 with verified work emails. The United States is the largest market and London the largest hub.

This list covers sustainability technology integrators worldwide, 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. Country and city lists for sustainability technology integrators follow the table.

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

7,657Companies

89,758Contacts tracked

29,629Verified emails

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The 25 largest sustainability technology integrators worldwide

Ranked by team size

Top 25 of 7,657 sustainability technology integrators worldwide, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability technology integrators: 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	ERM	Partial evidence	London, United KingdomHQ checked Sep 22, 2026	5,001-10,000	9,119 contacts →
	Partial evidence “Sustainability is our business.” Source: RevenueBase Database · checked Sep 22, 2026
2	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 22, 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 22, 2026
3	Clearesult	Partial evidence	Austin, TX, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,121 contacts →
	Partial evidence “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Source: RevenueBase Database · checked Sep 22, 2026
4	TSE	Indirect evidence	São Paulo/sp, BrazilHQ checked Sep 22, 2026	5,001-10,000	1,067 contacts →
	Indirect evidence “Somos a TSE - Total Sustainable Engineering.” Source: RevenueBase Database · checked Sep 22, 2026
5	Franklin Energy	Partial evidence	Port Washington, WI, United StatesHQ checked Sep 22, 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 22, 2026
6	Energy Solutions	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 22, 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 22, 2026
7	PAE	Partial evidence	Portland, OR, United StatesHQ checked Sep 22, 2026	201-500	744 contacts →
	Partial evidence “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Source: RevenueBase Database · checked Sep 22, 2026
8	Inerco	Partial evidence	Sevilla, SpainHQ checked Sep 22, 2026	1,001-5,000	688 contacts →
	Partial evidence “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Source: RevenueBase Database · checked Sep 22, 2026
9	KBC A Yokogawa Company	Indirect evidence	Walton-on-thames, United KingdomHQ checked Sep 22, 2026	201-500	658 contacts →
	Indirect evidence “We are passionate about driving sustainable change for our planet.” Source: RevenueBase Database · checked Sep 22, 2026
10	ACT Group	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	501-1,000	556 contacts →
	Indirect evidence “As the leading environmental solutions partner for organizations globally, ACT helps its partners meet increasing environmental action and disclosure expectations from regulators…” Source: RevenueBase Database · checked Sep 22, 2026
11	Watershed	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 22, 2026	201-500	529 contacts →
	Partial evidence “Watershed is the enterprise sustainability platform.” Source: RevenueBase Database · checked Sep 22, 2026
12	3e Engenharia EM Eficiencia Energetica	Indirect evidence	BrazilHQ checked Sep 22, 2026	201-500	473 contacts →
	Indirect evidence “A 3E Engenharia atua nacionalmente, oferecendo soluções para empresas concessionárias de serviços públicos, no planejamento, gestão, execução e inovação em projetos de Eficiência…” Source: RevenueBase Database · checked Sep 22, 2026
13	ADP Consulting	Partial evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	201-500	468 contacts →
	Partial evidence “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Source: RevenueBase Database · checked Sep 22, 2026
14	Elmeasure	Indirect evidence	Bangalore, IndiaHQ checked Sep 22, 2026	501-1,000	446 contacts →
	Indirect evidence “Founded in 2004 by a passionate team of entrepreneurs with deep expertise in energy management, Elmeasure began with a bold mission: to help industries, businesses, and…” Source: RevenueBase Database · checked Sep 22, 2026
15	Tecno Group	Partial evidence	Napoli, ItalyHQ checked Sep 22, 2026	201-500	423 contacts →
	Partial evidence “We are an Energy Digital and Sustainable Company specialized in sustainability consulting services and 4.0 solutions.” Source: RevenueBase Database · checked Sep 22, 2026
16	Photon Energy Group	Indirect evidence	Amsterdam, NetherlandsHQ checked Sep 22, 2026	201-500	407 contacts →
	Indirect evidence “Photon Energy Group is a group of companies with a shared mission: making clean energy, clean water and clean environments accessible to all.” Source: RevenueBase Database · checked Sep 22, 2026
17	Greenflex	Indirect evidence	Paris, FranceHQ checked Sep 22, 2026	501-1,000	390 contacts →
	Indirect evidence “Since 2009, GreenFlex has been a key partner in the energy, environmental and societal transformation of organizations, enabling them to change their trajectory towards an economy…” Source: RevenueBase Database · checked Sep 22, 2026
18	Veregy	Indirect evidence	Phoenix, MO, United StatesHQ checked Sep 22, 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 22, 2026
19	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
20	Inspired PLC	Strong evidence	Kirkham, United KingdomHQ checked Sep 22, 2026	501-1,000	373 contacts →
	Strong evidence “Inspired PLC is a leading technology-enabled provider of energy and sustainability solutions that allow UK and Irish businesses to transition to net-zero carbon and manage their…” Source: RevenueBase Database · checked Sep 22, 2026
21	Supernova	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 22, 2026	201-500	370 contacts →
	Indirect evidence “Supernova embodies the spirit of innovation and dedication to a sustainable future, making it a shining example of what it means to be a leader in the renewable energy industry.” Source: RevenueBase Database · checked Sep 22, 2026
22	Anthesis ESP	Indirect evidence	Manlleu, SpainHQ checked Sep 22, 2026	201-500	337 contacts →
	Indirect evidence “Som una empresa especialitzada en sostenibilitat, aliada amb les organitzacions, territoris i persones compromesos amb un món més sostenible, als quals acompanyem en la seva…” Source: RevenueBase Database · checked Sep 22, 2026
23	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
24	Quantis	Partial evidence	Lausanne, SwitzerlandHQ checked Sep 22, 2026	201-500	325 contacts →
	Partial evidence “Quantis, part of BCG, is a sustainability consulting firm that helps organizations translate sustainability ambition into measurable business value.” Source: RevenueBase Database · checked Sep 22, 2026
25	Applied Energy Technologies Private Limited	Partial evidence	Gurugram, IndiaHQ checked Sep 22, 2026	201-500	324 contacts →
	Partial evidence “At Applied Energy Technologies, we are redefining the energy landscape with cost-efficient, distributed, and sustainable energy solutions.” 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 technology integrators. 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 technology integrators.
Partial evidence: Its own public description names part of sustainability technology integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability technology integrators. 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 7,657 sustainability technology integrators worldwide

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Sustainability technology integrators worldwide at a glance

As of Sep 22, 2026

33.0%Verified-email coverage

11.7Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · London

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

4,553

11-50

2,348

51-200

537

201-500

123

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 technology integrators, 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.
Coverage: Every country. Country and city lists for sustainability technology integrators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “sustainability technology integrators”. 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 technology integrators), 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 technology integrators, and records with no verified work email.
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, 29,629 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 technology integrators by location

40 lists · largest first

Every Sustainability technology integrators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 technology integrators, 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 technology integrators are there worldwide?

RevenueBase identified 7,657 sustainability technology integrators worldwide 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?

ERM, headquartered in London, tops this list with the largest team on record.

Which country has the most sustainability technology integrators?

The United States leads with 1,026 companies, followed by Brazil (557) and India (543). Every sustainability technology integrators list by country and city is linked on this page.

Which city has the most sustainability technology integrators?

London leads with 132 headquartered companies, followed by Sao Paulo (96) and New York (58).

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 29,629 verified decision-maker contacts tracked across these 7,657 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.