Company lists · Data refreshed September 2026

Top 25 Energy strategy consulting firms worldwide

RevenueBase identified 18,993 energy strategy consulting firms worldwide as of September 2026 and tracks 337,456 professional contacts across them, including 114,385 with verified work emails. The United States is the largest market and London the largest hub.

This list covers energy strategy consulting firms 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 strategy consulting firms 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
18,993Companies
337,456Contacts tracked
114,385Verified emails
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The 25 largest energy strategy consulting firms worldwide

Ranked by team size
Top 25 of 18,993 energy strategy consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to energy strategy consulting firms: 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
1Partial evidenceSydney, AustraliaHQ checked Sep 21, 202610001+34,763 contacts →

Partial evidence

“Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceEdmonton, AB, CanadaHQ checked Sep 21, 202610001+28,416 contacts →

Indirect evidence

“Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.”

Source: RevenueBase Database · checked Sep 21, 2026
3Strong evidenceAberdeen, United KingdomHQ checked Sep 21, 202610001+26,949 contacts →

Strong evidence

“Wood is a global leader in consulting and engineering, delivering critical solutions across energy and materials markets.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect 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
5Indirect evidenceDubai, United Arab EmiratesHQ checked Sep 21, 202610001+7,045 contacts →

Indirect evidence

“We design, build and maintain the assets that power the world for today and make it future-ready for tomorrow.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceMunich, GermanyHQ checked Sep 21, 20261,001-5,0004,632 contacts →

Partial evidence

“Roland Berger is the only leading global strategy consultancy of European origin.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceMenasha, WI, United StatesHQ checked Sep 21, 20261,001-5,0002,741 contacts →

Partial evidence

“Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial 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
9Indirect evidenceJericho, NY, PalestineHQ checked Sep 21, 20261,001-5,0001,954 contacts →

Indirect evidence

“J.S.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidence港区, JapanHQ checked Sep 21, 20265,001-10,0001,900 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidencePlano, TX, United StatesHQ checked Sep 21, 20261,001-5,0001,661 contacts →

Indirect evidence

“At Westwood, our purpose is to create a better world for people through our work.”

Source: RevenueBase Database · checked Sep 21, 2026
12Strong evidenceNeuilly-sur-seine, FranceHQ checked Sep 21, 20265,001-10,0001,496 contacts →

Strong evidence

“Vulcain Engineering Group is a multi-specialist engineering and consulting group serving industrial companies across the globe, focused on critical sectors: energy, health…”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial 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
14Partial evidenceStuttgart, GermanyHQ checked Sep 21, 20261,001-5,0001,279 contacts →

Partial evidence

“As a leading, independent engineering and consultancy enterprise active in the sectors of energy and infrastructure, Fichtner handles challenging projects in countries all over…”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceLondon, United KingdomHQ checked Sep 21, 20261,001-5,0001,194 contacts →

Indirect evidence

“Faithful+Gould is now AtkinsRéalis.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceOxford, United KingdomHQ checked Sep 21, 2026501-1,0001,034 contacts →

Partial evidence

“Established in 2013, Aurora Energy Research is a leading global provider of power market forecasting and analytics for critical investment and financing decisions.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceLondon, United KingdomHQ checked Sep 21, 20261,001-5,0001,007 contacts →

Partial evidence

“Penspen designs, maintains, and optimises energy infrastructure to improve access to secure and sustainable energy for communities worldwide.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceAnaheim, CA, United StatesHQ checked Sep 21, 20261,001-5,000851 contacts →

Partial 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
19Partial evidenceHalf Moon Bay, CA, United StatesHQ checked Sep 21, 2026501-1,000733 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
20Strong evidenceHouston, TX, United StatesHQ checked Sep 21, 20261,001-5,000715 contacts →

Strong evidence

“For 25 years Capco’s Energy practice has combined innovative thinking with deep industry knowledge to provide business consulting, digital transformation and technology services…”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidence千代田区, JapanHQ checked Sep 21, 2026501-1,000696 contacts →

Partial evidence

“is a management consulting company based out of, Japan.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceSevilla, SpainHQ checked Sep 21, 20261,001-5,000688 contacts →

Indirect evidence

“INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceLondon, United KingdomHQ checked Sep 21, 20261,001-5,000670 contacts →

Indirect evidence

“Click the 'Follow' button and explore careers at Ricardo on our 'Jobs' and 'Life' tabs and at careers.ricardo.com.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceThane, IndiaHQ checked Sep 21, 2026501-1,000661 contacts →

Partial evidence

“M/s VIKRAN Engineering Ltd is a reputed and established engineering company specializing in providing comprehensive solutions in the fields of renewable energy, engineering…”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceVinci, ItalyHQ checked Sep 21, 2026201-500655 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 21, 2026

Showing 25 of 18,993 energy strategy consulting firms worldwide

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Energy strategy consulting firms worldwide at a glance

As of Sep 21, 2026
33.9%Verified-email coverage
17.8Average contacts per company
1-10Median size (employees)
2.1%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
12,654
11-50
4,768
51-200
1,074
201-500
221
501-1,000
77
1,001-5,000
88
5,001-10,000
8
10001+
26

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 strategy consulting firms, 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 strategy consulting firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “energy strategy consulting firms”. 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 strategy consulting firms), 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 strategy consulting firms, 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, 114,385 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 strategy consulting firms by location

81 lists · largest first

Every Energy strategy 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 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 strategy consulting firms, 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 strategy consulting firms are there worldwide?

RevenueBase identified 18,993 energy strategy consulting firms 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?

Worley, headquartered in Sydney, tops this list with the largest team on record.

Which country has the most energy strategy consulting firms?

The United States leads with 2,917 companies, followed by the United Kingdom (1,325) and Germany (1,233). Every energy strategy consulting firms list by country and city is linked on this page.

Which city has the most energy strategy consulting firms?

London leads with 396 headquartered companies, followed by Paris (252) and Houston (236).

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 114,385 verified decision-maker contacts tracked across these 18,993 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.