Company lists · Data refreshed September 2026

Top 25 Energy accounting companies worldwide

RevenueBase identified 6,057 energy accounting companies worldwide as of September 2026 and tracks 91,866 professional contacts across them, including 31,078 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers energy accounting 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 21, 2026. Country and city lists for energy accounting 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 21, 2026 86% judged on-target in blind review
6,057Companies
91,866Contacts tracked
31,078Verified emails
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The 25 largest energy accounting companies worldwide

Ranked by team size
Top 25 of 6,057 energy accounting companies worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy accounting 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 21, 202610001+9,238 contacts →

Indirect evidence

“Taking care of things.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceSaint-andré-lez-lille, FranceHQ checked Sep 21, 202610001+8,427 contacts →

Indirect evidence

“Dalkia : ensemble, relevons le défi climatique!”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceDubai, United Arab EmiratesHQ checked Sep 21, 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 21, 2026
4Partial evidenceLondon, United KingdomHQ checked Sep 21, 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 21, 2026
5Partial evidenceAustin, TX, United StatesHQ checked Sep 21, 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 21, 2026
6Partial evidenceFramingham, MA, United StatesHQ checked Sep 21, 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 21, 2026
7Partial evidenceEschborn, GermanyHQ checked Sep 21, 20261,001-5,0001,021 contacts →

Partial evidence

“Techem is a leading global energy service provider for the real estate sector and private homeowners.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceAnaheim, CA, United StatesHQ checked Sep 21, 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 21, 2026
9Indirect evidenceMilan, ItalyHQ checked Sep 21, 2026201-500608 contacts →

Indirect evidence

“Da dicembre 2025, abbiamo integrato EF Solare, il primo produttore fotovoltaico italiano.”

Source: RevenueBase Database · checked Sep 21, 2026
10Partial evidenceGateshead, United KingdomHQ checked Sep 21, 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 21, 2026
11Partial evidenceCarmel, IN, United StatesHQ checked Sep 21, 2026201-500478 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 21, 2026
12Partial evidenceSan Diego, CA, United StatesHQ checked Sep 21, 2026201-500467 contacts →

Partial evidence

“Calpine Solutions is a retail energy provider with a robust suite of customized products, analytics, and data management solutions to turn a corporate electricity expense into a…”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceAubervilliers, FranceHQ checked Sep 21, 20261,001-5,000460 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceIrvine, CA, United StatesHQ checked Sep 21, 2026201-500383 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceShelton, CT, United StatesHQ checked Sep 21, 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 21, 2026
16Partial evidenceRiyadh, Saudi ArabiaHQ checked Sep 21, 2026201-500342 contacts →

Partial evidence

“The National Energy Services Company (TARSHID) is a national company wholly owned by the Public Investment Fund (PIF).”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidencePark Ridge, NJ, United StatesHQ checked Sep 21, 2026201-500336 contacts →

Indirect evidence

“National Utility Service, Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceRedditch, United KingdomHQ checked Sep 21, 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 21, 2026
19Partial evidenceLe Bourget Du Lac, FranceHQ checked Sep 21, 202651-200300 contacts →

Partial evidence

“At the centre of the smart grid revolution, Energy Pool manages and optimizes complex systems (energy consumption of industrial sites, decentralized production, renewable…”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceIstanbul, TürkiyeHQ checked Sep 21, 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 21, 2026
21Partial evidencePortland, OR, United StatesHQ checked Sep 21, 2026201-500288 contacts →

Partial evidence

“At Cascade Energy, we believe in better.”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceJuiz De Fora, BrazilHQ checked Sep 21, 2026201-500280 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceUnited StatesHQ checked Sep 21, 2026501-1,000272 contacts →

Partial evidence

“Enabling the energy essential to support our lives.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidencePittsburgh, PA, United StatesHQ checked Sep 21, 20261,001-5,000252 contacts →

Partial evidence

“Direct Energy Business is part of a leading energy and energy-related services provider that is focused on helping customers make their businesses better.”

Source: RevenueBase Database · checked Sep 21, 2026
25Partial evidenceWestbury, NY, United StatesHQ checked Sep 21, 2026201-500241 contacts →

Partial evidence

“For over 45 years, Electro Industries/GaugeTech has been a leader in innovation and technological advancements in the areas of energy management and power monitoring.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 6,057 energy accounting companies worldwide

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Energy accounting companies worldwide at a glance

As of Sep 21, 2026
33.8%Verified-email coverage
15.2Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · Madrid
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
3,491
11-50
1,861
51-200
498
201-500
104
501-1,000
33
1,001-5,000
30
5,001-10,000
3
10001+
8

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 energy accounting 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
Every country. Country and city lists for energy accounting companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “energy accounting 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 accounting 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 accounting 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, 31,078 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 21, 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 accounting companies by location

21 lists · largest first

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

Countries

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 accounting 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 accounting companies are there worldwide?

RevenueBase identified 6,057 energy accounting 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 accounting companies?

The United States leads with 1,081 companies, followed by Spain (508) and the United Kingdom (453). Every energy accounting companies list by country and city is linked on this page.

Which city has the most energy accounting companies?

Madrid leads with 90 headquartered companies, followed by Paris (64) and Houston (62).

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 31,078 verified decision-maker contacts tracked across these 6,057 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 21, 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.