Company lists · Data refreshed September 2026

Top 25 Energy transition companies based in the United States

RevenueBase identified 3,841 company matches for energy transition companies associated with the United States as of September 2026 and tracks 160,238 professional contacts across them, including 61,034 with verified work emails. New York is the largest hub.

This list covers company matches for energy transition companies 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 15, 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 15, 2026 How this list was built
3,841Companies
160,238Contacts tracked
61,034Verified emails
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The 25 largest energy transition companies based in the United States

Ranked by team size
Top 25 of 3,841 company matches for energy transition companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 15, 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 matchBoston, MA, United StatesHQ recorded Sep 15, 202610001+29,528 contacts →

Exact match

“GE Vernova is a purpose-built energy technology company on a mission to electrify to thrive and decarbonize the world.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
2Exact matchSan Francisco, CA, United StatesHQ recorded Sep 15, 202610001+7,974 contacts →

Exact match

“Life runs on clean energy.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
3Exact matchJuno Beach, FL, United StatesHQ recorded Sep 15, 202610001+6,221 contacts →

Exact match

“NextEra Energy Resources, LLC, together with its affiliated entities,("NextEra Energy Resources") is one of the largest energy infrastructure companies in North America.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
4Exact matchWaukesha, WI, United StatesHQ recorded Sep 15, 20265,001-10,0003,797 contacts →

Exact match

“Generac is the total energy solutions company powering a smarter world.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
5Exact matchFremont, CA, United StatesHQ recorded Sep 15, 20261,001-5,0003,130 contacts →

Exact match

“Enphase Energy is a global energy technology company and the world’s leading supplier of microinverter-based solar and battery systems.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
6Exact matchMenasha, WI, United StatesHQ recorded Sep 15, 20261,001-5,0002,741 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 15, 2026 · View company records in RevenueBase
7Exact matchRichmond, CA, United StatesHQ recorded Sep 15, 20261,001-5,0002,675 contacts →

Exact match

“We believe clean energy and backup storage should be accessible to everybody.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
8Exact matchChicago, IL, United StatesHQ recorded Sep 15, 20261,001-5,0002,408 contacts →

Exact match

“Invenergy is North America’s largest privately held developer, owner, and operator of innovative, reliable power infrastructure.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
9Exact matchAustin, TX, United StatesHQ recorded Sep 15, 20261,001-5,0002,121 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 15, 2026 · View company records in RevenueBase
10Exact matchArlington, VA, United StatesHQ recorded Sep 15, 20261,001-5,0001,863 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 15, 2026 · View company records in RevenueBase
11Exact matchLake Mary, FL, United StatesHQ recorded Sep 15, 20261,001-5,0001,859 contacts →

Exact match

“Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
12Exact matchWall Township, NJ, United StatesHQ recorded Sep 15, 20261,001-5,0001,794 contacts →

Exact match

“Trinity Solar is one of the largest privately held residential solar companies in the nation.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
13Exact matchSan Mateo, CA, United StatesHQ recorded Sep 15, 202610001+1,756 contacts →

Exact match

“SolarCity was acquired by Tesla in 2016 and is now Tesla Energy Operations, Inc.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
14Exact matchFramingham, MA, United StatesHQ recorded Sep 15, 20261,001-5,0001,383 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 15, 2026 · View company records in RevenueBase
15Exact matchSan Diego, CA, United StatesHQ recorded Sep 15, 20261,001-5,0001,286 contacts →

Exact match

“SOLV Energy is a renewable energy solutions provider for utility solar, energy storage, and high voltage projects in North America.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
16Exact matchSan Diego, United StatesHQ recorded Sep 15, 2026n/a1,199 contacts →

Exact match

“The Powur Mission: Accelerate the adoption of clean energy worldwide We're empowering our community of homeowners and advisors to thrive in the global shift to sustainable energy.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
17Exact matchIrvine, CA, United StatesHQ recorded Sep 15, 2026501-1,000954 contacts →

Exact match

“Qcells is a renowned complete energy solutions provider in solar cell and module, energy storage, downstream project business and energy retail.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
18Exact matchFargo, ND, United StatesHQ recorded Sep 15, 20261,001-5,000933 contacts →

Exact match

“Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
19Exact matchAustin, United StatesHQ recorded Sep 15, 2026501-1,000931 contacts →

Exact match

“Recurrent Energy, a subsidiary of Canadian Solar Inc, is one of the world's largest and most geographically diversified utility-scale solar and energy storage project development…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
20Exact matchSan Francisco, CA, United StatesHQ recorded Sep 15, 2026501-1,000908 contacts →

Exact match

“d.light is a global leader and pioneer in delivering affordable solar-powered solutions designed for the two billion people in the developing world without access to reliable…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Sep 15, 2026501-1,000906 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 15, 2026 · View company records in RevenueBase
22Exact matchPineville, LA, United StatesHQ recorded Sep 15, 20261,001-5,000867 contacts →

Exact match

“At Cleco, we consider it an honor to provide the next generation with the resources they need for personal and professional success through sustainable, clean and safe energy…”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
23Exact matchSan Francisco, CA, United StatesHQ recorded Sep 15, 2026501-1,000795 contacts →

Exact match

“Clearway Energy Group’s vision is a world powered by clean energy.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
24Exact matchSan Francisco, CA, United StatesHQ recorded Sep 15, 2026501-1,000755 contacts →

Exact match

“Pattern Energy is one of the world’s largest privately-owned developers and operators of wind, solar, transmission, and energy storage projects.”

Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase
25Exact matchDurham, NC, United StatesHQ recorded Sep 15, 2026501-1,000740 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 15, 2026 · View company records in RevenueBase

Showing 25 of 3,841 energy transition companies based in the United States

See the full list, filter by size, metro and specialty, and access 61,034 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Energy transition companies based in the United States at a glance

As of Sep 15, 2026
38.1%Verified-email coverage
41.7Average contacts per company
11-50Median size (employees)
3.7%Largest-city concentration · New York
Sep 15, 2026Page data refreshed

Companies by employee count

1-10
1,618
11-50
1,439
51-200
530
201-500
128
501-1,000
52
1,001-5,000
50
5,001-10,000
9
10001+
10

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 3,841 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 companies” 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 61,034 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 15, 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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 3,841 company matches for energy transition companies 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?

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

Which city has the most energy transition companies?

New York leads with 142 company records, followed by Houston (126) and Austin (78).

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 61,034 professional contacts with verified work emails tracked across these 3,841 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 15, 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.