Company lists · Data refreshed November 2026

Top 25 Energy transition consulting groups based in the United States

RevenueBase identified 2,001 company matches for energy transition consulting groups associated with the United States as of November 2026 and tracks 31,797 professional contacts across them, including 15,101 with verified work emails. Houston is the largest hub.

This list covers company matches for energy transition consulting groups associated with the United States, 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 November 6, 2026.

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 Nov 6, 2026 How this list was built
2,001Companies
31,797Contacts tracked
15,101Verified emails
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The 25 largest energy transition consulting groups based in the United States

Ranked by team size
Top 25 of 2,001 company matches for energy transition consulting groups based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20261,001-5,0002,264 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 · Nov 6, 2026 · View company records in RevenueBase
2Exact matchFramingham, MA, United StatesHQ recorded Nov 6, 20261,001-5,0001,570 contacts →

Exact match

“Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure company delivering integrated solutions to create reliable power and modernize infrastructure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAnaheim, CA, United StatesHQ recorded Nov 6, 20261,001-5,000897 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 · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,000880 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 · Nov 6, 2026 · View company records in RevenueBase
5Exact matchOakland, CA, United StatesHQ recorded Nov 6, 2026201-500815 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 · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHalf Moon Bay, OR, United StatesHQ recorded Nov 6, 2026501-1,000793 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026501-1,000716 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchIrvine, MA, United StatesHQ recorded Nov 6, 2026201-500393 contacts →

Exact match

“We are Trio – global energy and sustainability advisors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchLong Beach, CA, United StatesHQ recorded Nov 6, 2026201-500379 contacts →

Exact match

“P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPhiladelphia, PA, United StatesHQ recorded Nov 6, 2026201-500355 contacts →

Exact match

“Customized Energy Solutions is at the forefront of competitive energy markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 2026201-500317 contacts →

Exact match

“3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchMinneapolis, CO, United StatesHQ recorded Nov 6, 2026201-500314 contacts →

Exact match

“Merjent is an environmental, restoration, and engineering consulting firm with a long history serving the energy industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchPortland, OR, United StatesHQ recorded Nov 6, 2026201-500304 contacts →

Exact match

“At Cascade Energy, we believe in better.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchDuluth, MN, United StatesHQ recorded Nov 6, 2026201-500298 contacts →

Exact match

“We act as an extension of your team, combining deep energy expertise with seamless alignment to your processes to advance projects with confidence.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026201-500282 contacts →

Exact match

“The world runs on power.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRenton, WA, United StatesHQ recorded Nov 6, 2026201-500275 contacts →

Exact match

“Mosaic is a consulting firm that delivers custom solutions across the energy, utility, grid operations, and grid modernization space.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchArlington, TX, United StatesHQ recorded Nov 6, 2026201-500255 contacts →

Exact match

“Priority Power is the energy partner delivering the systems, expertise and execution required to power enterprise growth.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchBeverly, MA, United StatesHQ recorded Nov 6, 2026201-500225 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchFairfax, VA, United StatesHQ recorded Nov 6, 2026201-500223 contacts →

Exact match

“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchPleasanton, CA, United StatesHQ recorded Nov 6, 202651-200218 contacts →

Exact match

“Frontier Energy is a professional services firm that excels in market transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchDallas, TX, United StatesHQ recorded Nov 6, 2026201-500209 contacts →

Exact match

“At Cenergistic, energy conservation starts with people.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBend, DC, United StatesHQ recorded Nov 6, 2026201-500208 contacts →

Exact match

“Lindahl Reed empowers tomorrow by inspiring change and shaping a better future.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Nov 6, 202651-200203 contacts →

Exact match

“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchSeattle, WA, United StatesHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“Utilicast is more than just a consulting company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBrooklyn, MD, United StatesHQ recorded Nov 6, 2026201-500183 contacts →

Exact match

“Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,001 energy transition consulting groups based in the United States

See the full list, filter by size, metro and specialty, and access 15,101 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy transition consulting groups based in the United States at a glance

As of Nov 6, 2026
47.5%Verified-email coverage
15.9Average contacts per company
1-10Median size (employees)
8.1%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
1,278
11-50
536
51-200
120
201-500
37
501-1,000
10
1,001-5,000
14
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,001 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “energy transition consulting groups” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 15,101 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 November 6, 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.

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 transition consulting groups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy transition consulting groups are there based in the United States?

RevenueBase identified 2,001 company matches for energy transition consulting groups associated with the United States as of November 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?

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

Which city has the most energy transition consulting groups?

Houston leads with 163 company records, followed by New York (100) and Washington (56).

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 15,101 professional contacts with verified work emails tracked across these 2,001 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 November 6, 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.