Company lists · Data refreshed September 2026

Top 25 Industrial energy optimization companies worldwide

Name: Industrial energy optimization companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 9,955 companies tracked

RevenueBase identified 9,955 industrial energy optimization companies worldwide as of September 2026 and tracks 137,570 professional contacts across them, including 45,293 with verified work emails and 0 with mobile numbers. The United States is the largest market and Madrid the largest hub.

This list covers industrial energy optimization companies 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 17, 2026. Country and city lists for industrial energy optimization companies 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 17, 2026 86% judged on-target in blind review

9,955Companies

137,570Contacts tracked

45,293Verified emails

0Mobile numbers

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The 25 largest industrial energy optimization companies worldwide

Ranked by team size

Top 25 of 9,955 industrial energy optimization companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial energy optimization 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	British GAS	Indirect evidence	Windsor, United KingdomHQ checked Sep 17, 2026	10001+	9,238 contacts →
	Indirect evidence “Taking care of things.” Source: RevenueBase Database · checked Sep 17, 2026
2	Dalkia	Indirect evidence	Saint-andré-lez-lille, FranceHQ checked Sep 17, 2026	10001+	8,427 contacts →
	Indirect evidence “Dalkia : ensemble, relevons le défi climatique!” Source: RevenueBase Database · checked Sep 17, 2026
3	Shell Energy	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	1,001-5,000	2,627 contacts →
	Partial evidence “We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Source: RevenueBase Database · checked Sep 17, 2026
4	Clearesult	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 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 17, 2026
5	Ameresco	Partial evidence	Framingham, MA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,383 contacts →
	Partial evidence “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Source: RevenueBase Database · checked Sep 17, 2026
6	Danfoss Climate Solutions	Partial evidence	Nordborg, DenmarkHQ checked Sep 17, 2026	10001+	1,128 contacts →
	Partial evidence “At Danfoss Climate Solutions, we engineer energy-efficient heating and cooling solutions to help the world get more out of less.” Source: RevenueBase Database · checked Sep 17, 2026
7	Techem Energy Services Gmbh	Partial evidence	Eschborn, GermanyHQ checked Sep 17, 2026	1,001-5,000	1,021 contacts →
	Partial evidence “Techem is a leading global energy service provider for the real estate sector and private homeowners.” Source: RevenueBase Database · checked Sep 17, 2026
8	Resource Innovations	Partial evidence	Half Moon Bay, CA, United StatesHQ checked Sep 17, 2026	501-1,000	733 contacts →
	Partial evidence “Resource Innovations (RI) is an energy transformation firm.” Source: RevenueBase Database · checked Sep 17, 2026
9	Riello	Strong evidence	Legnago, ItalyHQ checked Sep 17, 2026	1,001-5,000	690 contacts →
	Strong evidence “For over 100 years, Riello’s Energy For Life has been at the core of its industrial policy, guiding the company in the development of solutions designed to provide comfort and…” Source: RevenueBase Database · checked Sep 17, 2026
10	KBC A Yokogawa Company	Indirect evidence	Walton-on-thames, United KingdomHQ checked Sep 17, 2026	201-500	658 contacts →
	Indirect evidence “We are passionate about driving sustainable change for our planet.” Source: RevenueBase Database · checked Sep 17, 2026
11	Enegan	Indirect evidence	Vinci, ItalyHQ checked Sep 17, 2026	201-500	655 contacts →
	Indirect evidence “Enegan offre soluzioni personalizzate per le aziende abbinando alla fornitura di elettricità, gas e telecomunicazioni una vasta gamma di prodotti e servizi ad alto valore…” Source: RevenueBase Database · checked Sep 17, 2026
12	Sorgenia	Indirect evidence	Milan, ItalyHQ checked Sep 17, 2026	201-500	608 contacts →
	Indirect evidence “Da dicembre 2025, abbiamo integrato EF Solare, il primo produttore fotovoltaico italiano.” Source: RevenueBase Database · checked Sep 17, 2026
13	Kaluza	Partial evidence	London, United KingdomHQ checked Sep 17, 2026	501-1,000	595 contacts →
	Partial evidence “Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination.” Source: RevenueBase Database · checked Sep 17, 2026
14	Harris PYE	Partial evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	501-1,000	595 contacts →
	Partial evidence “At Harris Pye, everything we do saves energy.” Source: RevenueBase Database · checked Sep 17, 2026
15	Soenergy International	Strong evidence	Doral, FL, United StatesHQ checked Sep 17, 2026	1,001-5,000	567 contacts →
	Strong evidence “SoEnergy is a global provider of "energy as a service", ensuring customized solutions for a diverse array of organizations and industries worldwide, such as mining, oil & gas…” Source: RevenueBase Database · checked Sep 17, 2026
16	ACES	Partial evidence	Carmel, IN, United StatesHQ checked Sep 17, 2026	201-500	478 contacts →
	Partial evidence “ACES is a nationwide energy management company that helps its clients buy, sell, and manage the complexity of the U.S.” Source: RevenueBase Database · checked Sep 17, 2026
17	Serentica	Strong evidence	Gurugram, IndiaHQ checked Sep 17, 2026	201-500	470 contacts →
	Strong evidence “Serentica Renewables India Private Limited,(Serentica) is a is an end-to-end energy solutions company enabling large-scale heavy energy intensive industries and sector to…” Source: RevenueBase Database · checked Sep 17, 2026
18	Veolia Industries Global Solutions	Strong evidence	Aubervilliers, FranceHQ checked Sep 17, 2026	1,001-5,000	460 contacts →
	Strong evidence “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Source: RevenueBase Database · checked Sep 17, 2026
19	Elmeasure	Strong evidence	Bangalore, IndiaHQ checked Sep 17, 2026	501-1,000	446 contacts →
	Strong 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 17, 2026
20	PSI Software	Partial evidence	Berlin, GermanyHQ checked Sep 17, 2026	1,001-5,000	442 contacts →
	Partial evidence “The PSI Group develops software products for optimizing the flow of energy and materials for utilities and industry.” Source: RevenueBase Database · checked Sep 17, 2026
21	Sensorfact	Partial evidence	Utrecht, NetherlandsHQ checked Sep 17, 2026	201-500	390 contacts →
	Partial evidence “We develop products that allow manufacturers to easily monitor energy consumption and gain insight into machine maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
22	Veregy	Partial evidence	Phoenix, MO, United StatesHQ checked Sep 17, 2026	501-1,000	383 contacts →
	Partial evidence “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Source: RevenueBase Database · checked Sep 17, 2026
23	TRIO	Partial evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	201-500	383 contacts →
	Partial evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 17, 2026
24	Budderfly	Partial evidence	Shelton, CT, United StatesHQ checked Sep 17, 2026	201-500	366 contacts →
	Partial evidence “Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.” Source: RevenueBase Database · checked Sep 17, 2026
25	Alterea	Strong evidence	Nantes, FranceHQ checked Sep 17, 2026	201-500	363 contacts →
	Strong evidence “As an all trade and energy engineering company, ALTEREA operates through a reasoned approach in all your renovation projects, construction and energy optimization projects in the…” Source: RevenueBase Database · checked Sep 17, 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: industrial energy optimization 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 industrial energy optimization companies.
Partial evidence: Its own public description names part of industrial energy optimization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial energy optimization 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 9,955 industrial energy optimization companies worldwide

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Industrial energy optimization companies worldwide at a glance

As of Sep 17, 2026

32.9%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

5,690

11-50

3,167

51-200

790

201-500

161

501-1,000

1,001-5,000

5,001-10,000

10001+

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 industrial energy optimization 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.
Coverage: 35 countries, largest first: the United States, Spain, France, Italy, Germany, the United Kingdom, Brazil, India, Canada, Australia and 25 more. Country and city lists for industrial energy optimization companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “industrial energy optimization 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 industrial energy optimization 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 industrial energy optimization companies, 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, 45,293 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 17, 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.

Industrial energy optimization companies by location

49 lists · largest first

Every Industrial energy optimization companies 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 industrial energy optimization 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 industrial energy optimization companies are there worldwide?

RevenueBase identified 9,955 industrial energy optimization companies 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?

British GAS, headquartered in Windsor, tops this list with the largest team on record.

Which country has the most industrial energy optimization companies?

The United States leads with 1,898 companies, followed by Spain (920) and France (859). Every industrial energy optimization companies list by country and city is linked on this page.

Which city has the most industrial energy optimization companies?

Madrid leads with 164 headquartered companies, followed by Paris (138) and London (104).

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 45,293 verified decision-maker contacts tracked across these 9,955 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 17, 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.