Company lists · Data refreshed September 2026

Top 25 Renewable energy tech companies based in the United States

Name: Renewable energy tech companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,787 companies tracked

RevenueBase identified 2,787 company matches for renewable energy tech companies associated with the United States as of September 2026 and tracks 205,165 professional contacts across them, including 80,491 with verified work emails. New York is the largest hub.

This list covers company matches for renewable energy tech 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 17, 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 17, 2026 How this list was built

2,787Companies

205,165Contacts tracked

80,491Verified emails

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The 25 largest renewable energy tech companies based in the United States

Ranked by team size

Top 25 of 2,787 company matches for renewable energy tech companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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	TESLA	Exact match	Austin, TX, United StatesHQ recorded Sep 17, 2026	10001+	64,646 contacts →
	Exact match “Tesla is accelerating the world’s transition to sustainable abundance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	GE Vernova	Exact match	Boston, MA, United StatesHQ recorded Sep 17, 2026	10001+	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 17, 2026 · View company records in RevenueBase
3	Constellation	Exact match	Baltimore, MD, United StatesHQ recorded Sep 17, 2026	10001+	9,458 contacts →
	Exact match “Constellation Energy Corporation (Nasdaq: CEG), a Fortune 200 company headquartered in Baltimore, is the nation’s largest producer of reliable, emissions-free energy and a leading…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Sunrun	Exact match	San Francisco, CA, United StatesHQ recorded Sep 17, 2026	10001+	7,974 contacts →
	Exact match “Life runs on clean energy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	First Solar	Exact match	Tempe, AZ, United StatesHQ recorded Sep 17, 2026	5,001-10,000	5,581 contacts →
	Exact match “First Solar, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Enphase Energy	Exact match	Fremont, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	3,130 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 17, 2026 · View company records in RevenueBase
7	Sunpower Corporation	Exact match	Richmond, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,675 contacts →
	Exact match “We believe clean energy and backup storage should be accessible to everybody.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	CF Industries	Exact match	Northbrook, IL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	2,539 contacts →
	Exact match “At CF Industries, our mission is to provide clean energy to feed and fuel the world sustainably.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Babcock & Wilcox	Exact match	Akron, OH, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
10	Fluence	Exact match	Arlington, VA, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
11	Mitsubishi Power Americas	Exact match	Lake Mary, FL, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,859 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 17, 2026 · View company records in RevenueBase
12	Trinity Solar	Exact match	Wall Township, NJ, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,794 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 17, 2026 · View company records in RevenueBase
13	Solarcity	Exact match	San Mateo, CA, United StatesHQ recorded Sep 17, 2026	10001+	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 17, 2026 · View company records in RevenueBase
14	Solv Energy	Exact match	San Diego, CA, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,286 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 17, 2026 · View company records in RevenueBase
15	Ormat Technologies, INC	Exact match	Reno, NV, United StatesHQ recorded Sep 17, 2026	1,001-5,000	1,281 contacts →
	Exact match “With over five decades of experience, Ormat Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Goodleap	Exact match	Roseville, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	1,143 contacts →
	Exact match “GoodLeap is a technology company delivering best-in-class financing and software products for sustainable solutions, from solar panels and batteries to energy-efficient HVAC, heat…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Qcells North America	Exact match	Irvine, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	954 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 17, 2026 · View company records in RevenueBase
18	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Sep 17, 2026	1,001-5,000	933 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 17, 2026 · View company records in RevenueBase
19	Recurrent Energy	Exact match	Austin, United StatesHQ recorded Sep 17, 2026	501-1,000	931 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 17, 2026 · View company records in RevenueBase
20	d.light	Exact match	San Francisco, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	908 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 17, 2026 · View company records in RevenueBase
21	Sunnova Energy	Exact match	Houston, TX, United StatesHQ recorded Sep 17, 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 17, 2026 · View company records in RevenueBase
22	Form Energy	Exact match	Somerville, MA, United StatesHQ recorded Sep 17, 2026	501-1,000	807 contacts →
	Exact match “Form Energy is an American company driving innovation in energy technology and manufacturing.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Clearway Energy Group	Exact match	San Francisco, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	795 contacts →
	Exact match “Clearway Energy Group’s vision is a world powered by clean energy.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Pattern Energy	Exact match	San Francisco, CA, United StatesHQ recorded Sep 17, 2026	501-1,000	755 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 17, 2026 · View company records in RevenueBase
25	Powersecure, INC	Exact match	Durham, NC, United StatesHQ recorded Sep 17, 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 17, 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 “renewable energy tech companies”. 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 2,787 renewable energy tech companies based in the United States

See the full list, filter by size, metro and specialty, and access 80,491 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Renewable energy tech companies based in the United States at a glance

As of Sep 17, 2026

39.2%Verified-email coverage

73.6Average contacts per company

11-50Median size (employees)

3.3%Largest-city concentration · New York

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,139

11-50

1,015

51-200

396

201-500

109

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 2,787 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 “renewable energy tech 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 80,491 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 17, 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.

Renewable energy tech companies 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 “renewable energy tech companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 2,787 company matches for renewable energy tech 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?

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

Which city has the most renewable energy tech companies?

New York leads with 93 company records, followed by Houston (79) and Austin (60).

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 80,491 professional contacts with verified work emails tracked across these 2,787 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 17, 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.