Company lists · Data refreshed September 2026

Top 25 Utility consulting firms worldwide

RevenueBase identified 7,073 utility consulting firms worldwide as of September 2026 and tracks 135,481 professional contacts across them, including 46,632 with verified work emails and 25,944 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers utility 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 6, 2026. Country and city lists for utility 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 6, 2026 86% judged on-target in blind review
7,073Companies
135,481Contacts tracked
46,632Verified emails
25,944Mobile numbers
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The 25 largest utility consulting firms worldwide

Ranked by team size
Top 25 of 7,073 utility consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to utility 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 evidenceAberdeen, United KingdomHQ checked Sep 6, 202610001+26,949 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 6, 2026
2Indirect evidenceLondon, United KingdomHQ checked Sep 6, 20261,001-5,0002,627 contacts →

Indirect 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 6, 2026
3Indirect evidenceAustin, TX, United StatesHQ checked Sep 6, 20261,001-5,0002,121 contacts →

Indirect evidence

“CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.”

Source: RevenueBase Database · checked Sep 6, 2026
4Partial evidenceMount Airy, NC, United StatesHQ checked Sep 6, 202610001+2,082 contacts →

Partial evidence

“The Pike family of companies is a leading provider of utilities solutions to over 300 investor-owned, municipal and cooperative utilities in the United States.”

Source: RevenueBase Database · checked Sep 6, 2026
5Indirect evidencePlano, TX, United StatesHQ checked Sep 6, 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 6, 2026
6Indirect evidenceNew Delhi, IndiaHQ checked Sep 6, 20261,001-5,0001,489 contacts →

Indirect evidence

“Rodic Consultants is a digital-first, multi-sector and multi-service infrastructure consultancy committed to building solutions that empower progress and transform nations.”

Source: RevenueBase Database · checked Sep 6, 2026
7Strong evidenceKent, OH, United StatesHQ checked Sep 6, 20261,001-5,0001,395 contacts →

Strong evidence

“Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.”

Source: RevenueBase Database · checked Sep 6, 2026
8Indirect evidenceFramingham, MA, United StatesHQ checked Sep 6, 20261,001-5,0001,383 contacts →

Indirect 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 6, 2026
9Indirect evidenceStuttgart, GermanyHQ checked Sep 6, 20261,001-5,0001,279 contacts →

Indirect 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 6, 2026
10Indirect evidenceGurugram, IndiaHQ checked Sep 6, 20261,001-5,0001,144 contacts →

Indirect evidence

“At Voyants, we don't just design infrastructure, we sculpt the future.”

Source: RevenueBase Database · checked Sep 6, 2026
11Indirect evidenceIndiaHQ checked Sep 6, 20261,001-5,0001,136 contacts →

Indirect evidence

“Medhaj Techno Concept Pvt.”

Source: RevenueBase Database · checked Sep 6, 2026
12Partial evidenceMinneapolis, MN, United StatesHQ checked Sep 6, 20261,001-5,0001,088 contacts →

Partial evidence

“Barr provides engineering and environmental consulting services to clients across the Midwest, throughout the Americas, and around the world.”

Source: RevenueBase Database · checked Sep 6, 2026
13Indirect evidenceLondon, United KingdomHQ checked Sep 6, 20261,001-5,0001,007 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 6, 2026
14Partial evidenceHomestead, PA, United StatesHQ checked Sep 6, 2026501-1,000964 contacts →

Partial evidence

“Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…”

Source: RevenueBase Database · checked Sep 6, 2026
15Strong evidenceAnaheim, CA, United StatesHQ checked Sep 6, 20261,001-5,000851 contacts →

Strong 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 6, 2026
16Indirect evidenceCleveland, OK, United StatesHQ checked Sep 6, 20261,001-5,000761 contacts →

Indirect evidence

“Cleveland Integrity Services offers support services to companies in the Energy, Telecommunications, and Power industries.”

Source: RevenueBase Database · checked Sep 6, 2026
17Indirect evidenceMedellín | Bogotá | Lima | Miami | Nueva Delhi, ColombiaHQ checked Sep 6, 20261,001-5,000709 contacts →

Indirect evidence

“Over six decades offering our consultancy services locally and internationally, based on ethical principles and commitments, always through honest, socially responsible actions…”

Source: RevenueBase Database · checked Sep 6, 2026
18Indirect evidenceMetairie, LA, United StatesHQ checked Sep 6, 2026501-1,000700 contacts →

Indirect evidence

“EDG Inc.”

Source: RevenueBase Database · checked Sep 6, 2026
19Indirect evidenceChesterton, United KingdomHQ checked Sep 6, 2026501-1,000589 contacts →

Indirect evidence

“Dalcour Maclaren: delivering land, stakeholder and environmental solutions.”

Source: RevenueBase Database · checked Sep 6, 2026
20Indirect evidenceBoulogne Billancourt, FranceHQ checked Sep 6, 2026501-1,000581 contacts →

Indirect evidence

“PRIME Engineering est l’un des acteurs incontournables du conseil en ingénierie.”

Source: RevenueBase Database · checked Sep 6, 2026
21Indirect evidenceLongview, TX, United StatesHQ checked Sep 6, 2026501-1,000578 contacts →

Indirect evidence

“Since 1991, Applied Consultants Inc.”

Source: RevenueBase Database · checked Sep 6, 2026
22Indirect evidenceWellington, New ZealandHQ checked Sep 6, 20261,001-5,000568 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 6, 2026
23Partial evidenceEmeryville, CA, United StatesHQ checked Sep 6, 2026501-1,000526 contacts →

Partial evidence

“Dedicated to “Excellence in Engineering,” E2 Consulting Engineers, Inc.(E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering…”

Source: RevenueBase Database · checked Sep 6, 2026
24Indirect evidencePune, IndiaHQ checked Sep 6, 2026201-500486 contacts →

Indirect evidence

“MITCON Consultancy & Engineering Services Limited, an ISO 9001:2015 certified company & NSE listed company, was established in 1982.”

Source: RevenueBase Database · checked Sep 6, 2026
25Partial evidenceWaukesha, WI, United StatesHQ checked Sep 6, 20261,001-5,000457 contacts →

Partial evidence

“Olameter is a leading provider of outsourced utility asset management, network communications, and data services.”

Source: RevenueBase Database · checked Sep 6, 2026

Showing 25 of 7,073 utility consulting firms worldwide

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Utility consulting firms worldwide at a glance

As of Sep 6, 2026
34.4%Verified-email coverage
19.1%Mobile-number coverage
19.2Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · London
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
4,388
11-50
1,936
51-200
519
201-500
106
501-1,000
33
1,001-5,000
46
5,001-10,000
3
10001+
6

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 utility 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
30 countries, largest first: the United States, the United Kingdom, Germany, Spain, France, Italy, Brazil, Canada, Australia, India and 20 more. Country and city lists for utility consulting firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “utility 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 utility 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 utility 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, 46,632 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 between September 6, 2026 and September 14, 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.

Utility consulting firms by location

49 lists · largest first

Every Utility 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 utility 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 utility consulting firms are there worldwide?

RevenueBase identified 7,073 utility 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?

WOOD, headquartered in Aberdeen, tops this list with the largest team on record.

Which country has the most utility consulting firms?

The United States leads with 1,755 companies, followed by the United Kingdom (636) and Germany (543). Every utility consulting firms list by country and city is linked on this page.

Which city has the most utility consulting firms?

London leads with 118 headquartered companies, followed by Madrid (109) and Paris (93).

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 46,632 verified decision-maker contacts tracked across these 7,073 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 14, 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.