Company lists · Data refreshed October 2026

Top 25 Energy regulatory consultants based in the United States

RevenueBase identified 1,693 company matches for energy regulatory consultants associated with the United States as of October 2026 and tracks 21,577 professional contacts across them, including 9,156 with verified work emails. Houston is the largest hub.

This list covers company matches for energy regulatory consultants 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 October 12, 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 Oct 12, 2026 How this list was built
1,693Companies
21,577Contacts tracked
9,156Verified emails
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The 25 largest energy regulatory consultants based in the United States

Ranked by team size
Top 25 of 1,693 company matches for energy regulatory consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 12, 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 matchAnaheim, CA, United StatesHQ recorded Oct 12, 20261,001-5,000872 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 12, 2026 · View company records in RevenueBase
2Exact matchAustin, TX, United StatesHQ recorded Oct 12, 2026501-1,000678 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 12, 2026 · View company records in RevenueBase
3Exact matchIrvine, CA, United StatesHQ recorded Oct 12, 2026201-500387 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
4Exact matchLong Beach, CA, United StatesHQ recorded Oct 12, 2026201-500381 contacts →

Exact match

“P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
5Exact matchPark Ridge, NJ, United StatesHQ recorded Oct 12, 2026201-500360 contacts →

Exact match

“National Utility Service, Inc.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
6Exact matchPhiladelphia, PA, United StatesHQ recorded Oct 12, 2026201-500345 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
7Exact matchJackson, MI, United StatesHQ recorded Oct 12, 2026201-500342 contacts →

Exact match

“We provide expert engineering and consulting services that enable a more reliable and resilient power system.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
8Exact matchPortland, OR, United StatesHQ recorded Oct 12, 2026201-500301 contacts →

Exact match

“At Cascade Energy, we believe in better.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
9Exact matchMinneapolis, MN, United StatesHQ recorded Oct 12, 2026201-500297 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 · Oct 12, 2026 · View company records in RevenueBase
10Exact matchKirkland, WA, United StatesHQ recorded Oct 12, 2026201-500281 contacts →

Exact match

“We provide global renewable energy consulting services, focused on empowering clients to navigate the complexities of the energy transition.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
11Exact matchWesterville, OH, United StatesHQ recorded Oct 12, 2026201-500258 contacts →

Exact match

“In business since 1971, Electrical Reliability Services, Inc.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
12Exact matchPittsfield, ME, United StatesHQ recorded Oct 12, 2026201-500236 contacts →

Exact match

“At Kleinschmidt, we work primarily with energy companies and government agencies in North America to protect and enhance the environment without compromising performance.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
13Exact matchFairfax, VA, United StatesHQ recorded Oct 12, 2026201-500216 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 · Oct 12, 2026 · View company records in RevenueBase
14Exact matchSeattle, WA, United StatesHQ recorded Oct 12, 2026201-500192 contacts →

Exact match

“Hargis Engineers is a mechanical, electrical, telecommunications, security, energy consulting engineering, and commissioning firm.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
15Exact matchBillings, MT, United StatesHQ recorded Oct 12, 2026201-500191 contacts →

Exact match

“EPC Services Company (EPCS) has grown into one of the largest Engineer-Procure-Construct firms in the U.S, delivering comprehensive EPC execution, electrical testing, and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
16Exact matchSeattle, WA, United StatesHQ recorded Oct 12, 2026201-500189 contacts →

Exact match

“Utilicast is more than just a consulting company.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
17Exact matchHalf Moon Bay, CA, United StatesHQ recorded Oct 12, 2026201-500189 contacts →

Exact match

“Resource Innovations now combined with Nexant is a substantially woman-owned, woman-led energy consulting firm dedicated to creating equal access to clean resources through…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
18Exact matchBrooklyn, MD, United StatesHQ recorded Oct 12, 2026201-500182 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 · Oct 12, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Oct 12, 2026201-500168 contacts →

Exact match

“TPH & Co, the energy business of Perella Weinberg, provides strategic and financial advice to investors, management teams, boards of directors, government bodies, and other…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
20Exact matchPlano, TX, United StatesHQ recorded Oct 12, 2026n/a166 contacts →

Exact match

“We're your advocates.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
21Exact matchSan Francisco, CA, United StatesHQ recorded Oct 12, 202651-200163 contacts →

Exact match

“Energy.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
22Exact matchFolsom, CA, United StatesHQ recorded Oct 12, 202651-200163 contacts →

Exact match

“Follow us to discover company developments, our energy clients' successes and employment opportunities.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
23Exact matchMount Laurel, NJ, United StatesHQ recorded Oct 12, 2026201-500161 contacts →

Exact match

“United Engineers & Constructors is an industry-leading infrastructure engineering, procurement, construction, and consulting company dedicated to improving lives by delivering the…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
24Exact matchEvanston, IL, United StatesHQ recorded Oct 12, 202651-200158 contacts →

Exact match

“Grumman|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase
25Exact matchMadison, WI, United StatesHQ recorded Oct 12, 202651-200157 contacts →

Exact match

“PSE is an electrical energy expert that provides relationship-driven engineering and consulting services for forward-thinking partners who pursue long-term energy solutions.”

Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase

Showing 25 of 1,693 energy regulatory consultants based in the United States

See the full list, filter by size, metro and specialty, and access 9,156 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy regulatory consultants based in the United States at a glance

As of Oct 12, 2026
42.4%Verified-email coverage
12.7Average contacts per company
1-10Median size (employees)
5.9%Largest-city concentration · Houston
Oct 12, 2026Page data refreshed

Companies by employee count

1-10
1,047
11-50
501
51-200
108
201-500
26
501-1,000
5
1,001-5,000
5

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 1,693 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 regulatory consultants” 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 9,156 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 12, 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 regulatory consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many energy regulatory consultants are there based in the United States?

RevenueBase identified 1,693 company matches for energy regulatory consultants associated with the United States 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?

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

Which city has the most energy regulatory consultants?

Houston leads with 100 company records, followed by New York (56) and Austin (35).

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 9,156 professional contacts with verified work emails tracked across these 1,693 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 12, 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.