Company lists · Data refreshed September 2026

Top 25 Enterprise energy auditing services worldwide

Name: Enterprise energy auditing services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 8,957 companies tracked

RevenueBase identified 8,957 enterprise energy auditing services worldwide as of September 2026 and tracks 78,725 professional contacts across them, including 21,849 with verified work emails. The United States is the largest market and Madrid the largest hub.

This list covers enterprise energy auditing services 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 28, 2026. Country and city lists for enterprise energy auditing services 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 28, 2026 86% judged on-target in blind review

8,957Companies

78,725Contacts tracked

21,849Verified emails

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The 25 largest enterprise energy auditing services worldwide

Ranked by team size

Top 25 of 8,957 enterprise energy auditing services worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise energy auditing services: 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 28, 2026	10001+	9,238 contacts →
	Indirect evidence “Taking care of things.” Source: RevenueBase Database · checked Sep 28, 2026
2	Clearesult	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 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 28, 2026
3	Willdan	Indirect evidence	Anaheim, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	851 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 28, 2026
4	Enegan	Indirect evidence	Vinci, ItalyHQ checked Sep 28, 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 28, 2026
5	General Energy Management Systems P. LTD	Partial evidence	New Delhi, IndiaHQ checked Sep 28, 2026	501-1,000	540 contacts →
	Partial evidence “General Energy Management Systems Pvt.” Source: RevenueBase Database · checked Sep 28, 2026
6	Revergy	Partial evidence	Seville, SpainHQ checked Sep 28, 2026	501-1,000	502 contacts →
	Partial evidence “REVERGY nace mediante un proyecto de profesionales procedentes de diferentes ámbitos del sector de las energías renovables con el fin de presentar un proyecto marcado por la…” Source: RevenueBase Database · checked Sep 28, 2026
7	Veolia Industries Global Solutions	Partial evidence	Aubervilliers, FranceHQ checked Sep 28, 2026	1,001-5,000	460 contacts →
	Partial evidence “Veolia Industries Global Solutions est devenu Veolia Energie Performance depuis le 1er juin 2025.” Source: RevenueBase Database · checked Sep 28, 2026
8	BECIS	Partial evidence	SingaporeHQ checked Sep 28, 2026	201-500	393 contacts →
	Partial evidence “BECIS is a leading Energy as a Service (EaaS) provider to high-quality commercial and industrial customers.” Source: RevenueBase Database · checked Sep 28, 2026
9	International Energy Services Limited	Partial evidence	Lagos, NigeriaHQ checked Sep 28, 2026	201-500	389 contacts →
	Partial evidence “International Energy Services Limited (IESL) – Key Company Information IESL was registered in Nigeria in 1990 as an indigenous energy services company.” Source: RevenueBase Database · checked Sep 28, 2026
10	TRIO	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	383 contacts →
	Partial evidence “We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy.” Source: RevenueBase Database · checked Sep 28, 2026
11	Budderfly	Partial evidence	Shelton, CT, United StatesHQ checked Sep 28, 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 28, 2026
12	ترشيد Tarshid	Partial evidence	Riyadh, Saudi ArabiaHQ checked Sep 28, 2026	201-500	342 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 28, 2026
13	NUS Consulting Group	Indirect evidence	Park Ridge, NJ, United StatesHQ checked Sep 28, 2026	201-500	336 contacts →
	Indirect evidence “National Utility Service, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
14	Cascade Energy	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	201-500	288 contacts →
	Partial evidence “At Cascade Energy, we believe in better.” Source: RevenueBase Database · checked Sep 28, 2026
15	Deode Energia	Partial evidence	Juiz De Fora, BrazilHQ checked Sep 28, 2026	201-500	280 contacts →
	Partial evidence “A DEODE Energia foi fundada em 2012 proveniente da HF Energy.” Source: RevenueBase Database · checked Sep 28, 2026
16	Prime Energy	Partial evidence	Sao Paulo, BrazilHQ checked Sep 28, 2026	51-200	225 contacts →
	Partial evidence “Empresa voltada a projetos de Otimização e Eficiêntização no uso da energia elétrica.” Source: RevenueBase Database · checked Sep 28, 2026
17	D2o	Partial evidence	Jaipur, IndiaHQ checked Sep 28, 2026	51-200	217 contacts →
	Partial evidence “Design2Occupancy Services LLP (D2O) is a leading organization providing a platform and solutions in Energy Efficiency Analysis and Energy Code Compliances, Climate Change…” Source: RevenueBase Database · checked Sep 28, 2026
18	PEG	Partial evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	201-500	214 contacts →
	Partial evidence “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Source: RevenueBase Database · checked Sep 28, 2026
19	Dalkia Energy Solutions	Partial evidence	Beverly, MA, United StatesHQ checked Sep 28, 2026	201-500	210 contacts →
	Partial evidence “Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Ex'im	Indirect evidence	La Madeleine, FranceHQ checked Sep 28, 2026	201-500	207 contacts →
	Indirect evidence “Depuis plus de 20 ans, EX’IM s’engage dans la transition énergétique pour adapter les bâtiments (logements, entreprises, collectivités) aux enjeux de demain.” Source: RevenueBase Database · checked Sep 28, 2026
21	Bright Power	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	205 contacts →
	Partial evidence “Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Source: RevenueBase Database · checked Sep 28, 2026
22	Motive Energy	Partial evidence	Orange County, CA, United StatesHQ checked Sep 28, 2026	201-500	203 contacts →
	Partial evidence “Motive Energy transforms how businesses source, store, convert, move, and manage their energy through end-to-end solutions that empower customers to take control of their energy.” Source: RevenueBase Database · checked Sep 28, 2026
23	Energy Management Collaborative EMC	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	201-500	193 contacts →
	Partial evidence “EMC manages and scales turnkey energy efficiency solutions for Fortune 500 clients across their North American portfolios.” Source: RevenueBase Database · checked Sep 28, 2026
24	Kontek Enerji̇	Partial evidence	İzmir, TürkiyeHQ checked Sep 28, 2026	51-200	190 contacts →
	Partial evidence “In the renewable energy sector and every area of industry, we combine energy production and savings solutions with digital automation, visualization-reporting technologies, and…” Source: RevenueBase Database · checked Sep 28, 2026
25	NBI SPA	Partial evidence	Bologna, ItalyHQ checked Sep 28, 2026	501-1,000	184 contacts →
	Partial evidence “Belonging to Italian industrial giant Webuild Group, NBI develops turnkey projects and provides expert advice and intervention with regard to plant design and energy services…” Source: RevenueBase Database · checked Sep 28, 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: enterprise energy auditing services. 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 enterprise energy auditing services.
Partial evidence: Its own public description names part of enterprise energy auditing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise energy auditing services. 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 8,957 enterprise energy auditing services worldwide

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Enterprise energy auditing services worldwide at a glance

As of Sep 28, 2026

27.8%Verified-email coverage

8.8Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · Madrid

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

5,835

11-50

2,406

51-200

504

201-500

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 enterprise energy auditing services, 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 enterprise energy auditing services are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “enterprise energy auditing services”. 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 enterprise energy auditing services), 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 enterprise energy auditing services, 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, 21,849 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 28, 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.

Enterprise energy auditing services by location

37 lists · largest first

Every Enterprise energy auditing services 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 enterprise energy auditing services, 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 enterprise energy auditing services are there worldwide?

RevenueBase identified 8,957 enterprise energy auditing services 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 enterprise energy auditing services?

The United States leads with 1,135 companies, followed by Spain (661) and France (630). Every enterprise energy auditing services list by country and city is linked on this page.

Which city has the most enterprise energy auditing services?

Madrid leads with 114 headquartered companies, followed by Paris (92) and London (81).

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 21,849 verified decision-maker contacts tracked across these 8,957 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 28, 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.