Company lists · Data refreshed September 2026

Top 25 Energy performance contracting companies worldwide

RevenueBase identified 7,169 energy performance contracting companies worldwide as of September 2026 and tracks 104,837 professional contacts across them, including 36,709 with verified work emails and 0 with mobile numbers. The United States is the largest market and Madrid the largest hub.

This list covers energy performance contracting 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 16, 2026. Country and city lists for energy performance contracting 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 16, 2026 86% judged on-target in blind review
7,169Companies
104,837Contacts tracked
36,709Verified emails
0Mobile numbers
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The 25 largest energy performance contracting companies worldwide

Ranked by team size
Top 25 of 7,169 energy performance contracting companies worldwide, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy performance contracting 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceWindsor, United KingdomHQ checked Sep 16, 202610001+9,238 contacts →

Indirect evidence

“Taking care of things.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceSaint-andré-lez-lille, FranceHQ checked Sep 16, 202610001+8,427 contacts →

Indirect evidence

“Dalkia : ensemble, relevons le défi climatique!”

Source: RevenueBase Database · checked Sep 16, 2026
3Partial evidenceDubai, United Arab EmiratesHQ checked Sep 16, 20265,001-10,0004,058 contacts →

Partial evidence

“Enova is the regional leader in integrated energy and multi-technical services, delivering comprehensive services to its clients.”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 16, 20261,001-5,0002,627 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 16, 2026
5Partial evidenceAustin, TX, United StatesHQ checked Sep 16, 20261,001-5,0002,121 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 16, 2026
6Partial evidenceFramingham, MA, United StatesHQ checked Sep 16, 20261,001-5,0001,383 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 16, 2026
7Indirect evidenceOslo, NorwayHQ checked Sep 16, 20261,001-5,0001,150 contacts →

Indirect evidence

“GK er en ledende teknisk entreprenør og servicepartner.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceAnaheim, CA, United StatesHQ checked Sep 16, 20261,001-5,000851 contacts →

Indirect evidence

“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.”

Source: RevenueBase Database · checked Sep 16, 2026
9Partial evidenceOakland, CA, United StatesHQ checked Sep 16, 2026201-500772 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 16, 2026
10Partial evidenceHalf Moon Bay, CA, United StatesHQ checked Sep 16, 2026501-1,000733 contacts →

Partial evidence

“Resource Innovations (RI) is an energy transformation firm.”

Source: RevenueBase Database · checked Sep 16, 2026
11Strong evidenceEdison, NJ, United StatesHQ checked Sep 16, 20261,001-5,000669 contacts →

Strong evidence

“Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.”

Source: RevenueBase Database · checked Sep 16, 2026
12Partial evidenceGateshead, United KingdomHQ checked Sep 16, 2026501-1,000509 contacts →

Partial evidence

“As leaders in our field, we’re trusted by over businesses to provide a full energy service.”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceWestborough, MA, United StatesHQ checked Sep 16, 2026201-500481 contacts →

Partial evidence

“NORESCO, a part of Carrier Global Corporation, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.”

Source: RevenueBase Database · checked Sep 16, 2026
14Strong evidenceAubervilliers, FranceHQ checked Sep 16, 20261,001-5,000460 contacts →

Strong evidence

“Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 16, 2026501-1,000450 contacts →

Indirect evidence

“SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.”

Source: RevenueBase Database · checked Sep 16, 2026
16Partial evidenceIrvine, CA, United StatesHQ checked Sep 16, 2026201-500383 contacts →

Partial evidence

“We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceShelton, CT, United StatesHQ checked Sep 16, 2026201-500366 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 16, 2026
18Partial evidenceMedford, MA, United StatesHQ checked Sep 16, 2026201-500356 contacts →

Partial evidence

“At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidencePark Ridge, NJ, United StatesHQ checked Sep 16, 2026201-500336 contacts →

Indirect evidence

“National Utility Service, Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
20Partial evidenceRedditch, United KingdomHQ checked Sep 16, 202651-200316 contacts →

Partial evidence

“EIC Partnership: A Legacy of Expertise, A Commitment to Sustainability With origins dating back to 1975, EIC has cultivated nearly 50 years of distinguished service in energy and…”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceClichy, FranceHQ checked Sep 16, 2026201-500293 contacts →

Indirect evidence

“Engagé depuis 2008, Hellio est le pionnier du marché des économies d’énergie en France (métropole et Outre-Mer).”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceIstanbul, TürkiyeHQ checked Sep 16, 2026201-500289 contacts →

Partial evidence

“A World Brand/Pride of Turkey In Energy Quality ENTES is a family that works ardently for energy quality and efficiency in our country, where energy is valuable and overcosting.”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidencePortland, OR, United StatesHQ checked Sep 16, 2026201-500288 contacts →

Partial evidence

“At Cascade Energy, we believe in better.”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceJuiz De Fora, BrazilHQ checked Sep 16, 2026201-500280 contacts →

Partial evidence

“A DEODE Energia foi fundada em 2012 proveniente da HF Energy.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceFort Washington, PA, United StatesHQ checked Sep 16, 2026201-500252 contacts →

Partial evidence

“CMC Energy Services is a woman-owned full-service energy efficiency company with nearly 50 years of experience delivering value-based energy conservation services.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 7,169 energy performance contracting companies worldwide

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Energy performance contracting companies worldwide at a glance

As of Sep 16, 2026
35.0%Verified-email coverage
14.6Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · Madrid
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
4,185
11-50
2,215
51-200
550
201-500
111
501-1,000
28
1,001-5,000
24
5,001-10,000
2
10001+
7

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 energy performance contracting 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
27 countries, largest first: the United States, France, Italy, Spain, the United Kingdom, Germany, Brazil, Canada, Australia, India and 17 more. Country and city lists for energy performance contracting companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “energy performance contracting 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 energy performance contracting 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 energy performance contracting 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, 36,709 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 16, 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.

Energy performance contracting companies by location

34 lists · largest first

Every Energy performance contracting 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 energy performance contracting 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 energy performance contracting companies are there worldwide?

RevenueBase identified 7,169 energy performance contracting 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 energy performance contracting companies?

The United States leads with 1,659 companies, followed by France (781) and Italy (680). Every energy performance contracting companies list by country and city is linked on this page.

Which city has the most energy performance contracting companies?

Madrid leads with 125 headquartered companies, followed by Paris (120) and New York (72).

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 36,709 verified decision-maker contacts tracked across these 7,169 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 16, 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.