Company lists · Data refreshed September 2026

Top 25 Energy technology consulting firms based in the United States

Name: Energy technology consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,917 companies tracked

RevenueBase identified 3,917 company matches for energy technology consulting firms associated with the United States as of September 2026 and tracks 136,107 professional contacts across them, including 54,837 with verified work emails. Houston is the largest hub.

This list covers company matches for energy technology consulting firms 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 September 21, 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 Sep 21, 2026 How this list was built

3,917Companies

136,107Contacts tracked

54,837Verified emails

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The 25 largest energy technology consulting firms based in the United States

Ranked by team size

Top 25 of 3,917 company matches for energy technology consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	TRANE	Exact match	Davidson, NC, United StatesHQ recorded Sep 21, 2026	10001+	10,272 contacts →
	Exact match “Trane is the building technology and energy solutions leader who deploys a depth and breadth of expertise, backgrounds, and perspectives to innovate new technologies and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	DTE Energy	Exact match	Detroit, MI, United StatesHQ recorded Sep 21, 2026	10001+	9,087 contacts →
	Exact match “DTE is one of the largest Fortune 500 diversified energy companies, proudly serving Michigan for over a century.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	The AES Corporation	Exact match	Arlington, VA, United StatesHQ recorded Sep 21, 2026	5,001-10,000	5,387 contacts →
	Exact match “The world no longer thinks of energy as a matter of supply and demand.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Mortenson	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 21, 2026	5,001-10,000	5,298 contacts →
	Exact match “Mortenson is a U.S-based, top-25 builder, developer and provider of energy and engineering services committed to helping organizations move their strategies forward.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Sargent & Lundy	Exact match	Chicago, WY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	4,156 contacts →
	Exact match “Sargent & Lundy is one of the world’s longest-standing full-service architect engineering firms.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Hubbell Incorporated	Exact match	Shelton, CT, United StatesHQ recorded Sep 21, 2026	10001+	4,053 contacts →
	Exact match “Hubbell Incorporated is a leading manufacturer of utility and electrical solutions that help build more reliable, resilient, and renewable energy infrastructure.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Generac	Exact match	Waukesha, WI, United StatesHQ recorded Sep 21, 2026	5,001-10,000	3,797 contacts →
	Exact match “Generac is the total energy solutions company powering a smarter world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Entrust Solutions Group	Exact match	Lisle, IL, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,966 contacts →
	Exact match “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	FTI	Exact match	Menasha, WI, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
10	Babcock & Wilcox	Exact match	Akron, OH, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,340 contacts →
	Exact match “Babcock & Wilcox, based in Akron, Ohio, USA is a global leader in energy and environmental technologies and services for power, renewable and industrial markets.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
12	Enercon Services, INC	Exact match	Kennesaw, GA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,865 contacts →
	Exact match “ENERCON is a multi-discipline engineering and environmental engineering support services firm focused on delivering safe and efficient solutions for the power, data center and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Fluence	Exact match	Arlington, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,863 contacts →
	Exact match “To achieve our mission, we design, deploy, and operate the world’s most advanced modular energy storage products, comprehensive lifecycle services, and AI-enabled asset management…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Enverus	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,694 contacts →
	Exact match “Enverus is a single source platform for management, development and acquisition, within the entire energy value chain.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Westwood Professional Services	Exact match	Plano, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,661 contacts →
	Exact match “At Westwood, our purpose is to create a better world for people through our work.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	IGS Energy	Exact match	Dublin, OH, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,388 contacts →
	Exact match “IGS Energy has been a trusted energy advisor since 1989, growing into one of the nation’s top energy retailers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
18	Gulf Companies	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,046 contacts →
	Exact match “At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Sunnova Energy	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	906 contacts →
	Exact match “Sunnova Energy International Inc.(NYSE: NOVA) is an industry-leading energy services company focused on making clean energy more accessible, reliable, and affordable for…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Willdan	Exact match	Anaheim, CA, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
21	Energy Solutions	Exact match	Oakland, CA, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
22	Cleveland Integrity Services	Exact match	Cleveland, OK, United StatesHQ recorded Sep 21, 2026	1,001-5,000	761 contacts →
	Exact match “Cleveland Integrity Services offers support services to companies in the Energy, Telecommunications, and Power industries.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	PAE	Exact match	Portland, OR, United StatesHQ recorded Sep 21, 2026	201-500	744 contacts →
	Exact match “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Powersecure, INC	Exact match	Durham, NC, United StatesHQ recorded Sep 21, 2026	501-1,000	740 contacts →
	Exact match “PowerSecure, a Southern Company subsidiary, is a leading provider of innovative energy solutions to electric utilities and their industrial, institutional, and commercial…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Resource Innovations	Exact match	Half Moon Bay, CA, United StatesHQ recorded Sep 21, 2026	501-1,000	733 contacts →
	Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Sep 21, 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 technology 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 3,917 energy technology consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 54,837 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy technology consulting firms based in the United States at a glance

As of Sep 21, 2026

40.3%Verified-email coverage

34.7Average contacts per company

1-10Median size (employees)

6.3%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,120

11-50

1,167

51-200

408

201-500

107

501-1,000

1,001-5,000

5,001-10,000

10001+

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 3,917 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 technology 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. 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 54,837 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 September 21, 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 technology consulting firms by metro

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

How many energy technology consulting firms are there based in the United States?

RevenueBase identified 3,917 company matches for energy technology consulting firms associated with the United States as of September 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?

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

Which city has the most energy technology consulting firms?

Houston leads with 248 company records, followed by New York (121) and Austin (67).

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 54,837 professional contacts with verified work emails tracked across these 3,917 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 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 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.