Company lists · Data refreshed October 2026

Top 25 Energy consulting firms worldwide

Name: Energy consulting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 23,845 companies tracked

RevenueBase identified 23,845 company matches for energy consulting firms worldwide as of October 2026 and tracks 351,205 professional contacts across them, including 103,989 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for energy consulting firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 1, 2026. Country and city lists for energy consulting firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 1, 2026 How this list was built

23,845Companies

351,205Contacts tracked

103,989Verified emails

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The 25 largest energy consulting firms worldwide

Ranked by team size

Top 25 of 23,845 company matches for energy consulting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Worley	Exact match	Sydney, AustraliaHQ recorded Oct 1, 2026	10001+	34,763 contacts →
	Exact match “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	WOOD	Exact match	Aberdeen, United KingdomHQ recorded Oct 1, 2026	10001+	26,949 contacts →
	Exact match “Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	British GAS	Exact match	Windsor, United KingdomHQ recorded Oct 1, 2026	10001+	9,238 contacts →
	Exact match “Taking care of things.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Dalkia	Exact match	Saint-andré-lez-lille, FranceHQ recorded Oct 1, 2026	10001+	8,427 contacts →
	Exact match “Dalkia : ensemble, relevons le défi climatique!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	KENT	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 1, 2026	10001+	7,045 contacts →
	Exact match “We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Enova By Veolia	Exact match	Dubai, United Arab EmiratesHQ recorded Oct 1, 2026	5,001-10,000	4,058 contacts →
	Exact match “Enova is the regional leader in integrated energy and multi-technical services, delivering comprehensive services to its clients.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	FTI	Exact match	Menasha, WI, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,741 contacts →
	Exact match “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Shell Energy	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	2,627 contacts →
	Exact match “We help businesses manage energy needs, boost efficiency, control costs and achieve decarbonisation goals for a better energy future.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	2,121 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Baycurrent	Exact match	港区, JapanHQ recorded Oct 1, 2026	5,001-10,000	1,900 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,383 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	GK	Exact match	Oslo, NorwayHQ recorded Oct 1, 2026	1,001-5,000	1,150 contacts →
	Exact match “GK er en ledende teknisk entreprenør og servicepartner.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Aden Group	Exact match	SingaporeHQ recorded Oct 1, 2026	10001+	1,105 contacts →
	Exact match “Aden Group is a Euro-Asian enterprise delivering comprehensive solutions to boost decarbonization, productivity and energy transition in the built environment.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Dalkia UK	Exact match	London, United KingdomHQ recorded Oct 1, 2026	5,001-10,000	1,064 contacts →
	Exact match “Together, we’re delivering technical solutions for a better society and an Electric Britain Dalkia is one of the UK’s leading technical and energy services providers at the…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Penspen	Exact match	London, United KingdomHQ recorded Oct 1, 2026	1,001-5,000	1,007 contacts →
	Exact match “Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	World Kinect	Exact match	Miami, FL, United StatesHQ recorded Oct 1, 2026	1,001-5,000	998 contacts →
	Exact match “Headquartered in Miami, Florida, World Kinect Corporation (NYSE: WKC) is a leading global energy management company, offering a broad suite of solutions across the energy product…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	851 contacts →
	Exact match “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Energy Solutions	Exact match	Oakland, CA, United StatesHQ recorded Oct 1, 2026	201-500	772 contacts →
	Exact match “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Resource Innovations	Exact match	Half Moon Bay, CA, United StatesHQ recorded Oct 1, 2026	501-1,000	733 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Capco Energy	Exact match	Houston, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	715 contacts →
	Exact match “For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Inerco	Exact match	Seville, SpainHQ recorded Oct 1, 2026	1,001-5,000	688 contacts →
	Exact match “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Vikran Engineering LTD	Exact match	Thane, IndiaHQ recorded Oct 1, 2026	501-1,000	661 contacts →
	Exact match “M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	WTS Energy	Exact match	The Hague, NetherlandsHQ recorded Oct 1, 2026	1,001-5,000	651 contacts →
	Exact match “The Energy Transition brings new challenges and opportunities to all of us.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	Electric Power Engineers	Exact match	Austin, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	630 contacts →
	Exact match “Electric Power Engineers (EPE) is a global advisory and engineering firm advancing grid reliability, resilience, flexibility, and affordability.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Applied Consultants	Exact match	Longview, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	578 contacts →
	Exact match “Since 1991, Applied Consultants Inc.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “energy consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 23,845 energy consulting firms worldwide

See the full list, filter by size, metro and specialty, and access 103,989 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy consulting firms worldwide at a glance

As of Oct 1, 2026

29.6%Verified-email coverage

14.7Average contacts per company

1-10Median size (employees)

1.1%Largest-city concentration · London

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

14,871

11-50

6,709

51-200

1,601

201-500

318

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for energy consulting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “energy consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 103,989 professional contacts with verified work emails across the full matched dataset. 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 October 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Energy consulting firms by location

116 lists · largest first

Every Energy consulting firms 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “energy consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy consulting firms are there worldwide?

RevenueBase identified 23,845 company matches for energy consulting firms worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Worley tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most energy consulting firms?

The United States leads with 3,927 companies, followed by France (1,672) and Spain (1,573). Every energy consulting firms list by country and city is linked on this page.

Which city has the most energy consulting firms?

London leads with 269 company records, followed by Madrid (254) and Paris (221).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 103,989 professional contacts with verified work emails tracked across these 23,845 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 1, 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 SmartSearch, 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.