Company lists · Data refreshed September 2026

Top 25 Sustainable energy developers based in the United States

Name: Sustainable energy developers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 2,985 companies tracked

RevenueBase identified 2,985 sustainable energy developers headquartered in the United States as of September 2026 and tracks 79,530 professional contacts across them, including 28,809 with verified work emails. New York is the largest hub.

This list covers sustainable energy developers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 18, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 18, 2026 86% judged on-target in blind review

2,985Companies

79,530Contacts tracked

28,809Verified emails

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The 25 largest sustainable energy developers based in the United States

Ranked by team size

Top 25 of 2,985 sustainable energy developers based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable energy developers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Sunrun	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 18, 2026	10001+	7,974 contacts →
	Partial evidence “Life runs on clean energy.” Source: RevenueBase Database · checked Sep 18, 2026
2	FTI	Partial evidence	Menasha, WI, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,741 contacts →
	Partial evidence “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Source: RevenueBase Database · checked Sep 18, 2026
3	Mckinstry	Partial evidence	Seattle, WA, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,213 contacts →
	Partial evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 18, 2026
4	Mitsubishi Power Americas	Indirect evidence	Lake Mary, FL, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,859 contacts →
	Indirect evidence “Mitsubishi Power Americas is creating a future that works for people and the planet through innovative power generation technology and solutions.” Source: RevenueBase Database · checked Sep 18, 2026
5	Solv Energy	Partial evidence	San Diego, CA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,286 contacts →
	Partial evidence “SOLV Energy is a renewable energy solutions provider for utility solar, energy storage, and high voltage projects in North America.” Source: RevenueBase Database · checked Sep 18, 2026
6	Wanzek Construction, Inc., A Mastec Company	Partial evidence	Fargo, ND, United StatesHQ checked Sep 18, 2026	1,001-5,000	933 contacts →
	Partial evidence “Wanzek Construction, Inc, a MasTec Renewables company, is a leading general construction contractor and clean energy services company headquartered in Fargo, North Dakota.” Source: RevenueBase Database · checked Sep 18, 2026
7	d.light	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 18, 2026	501-1,000	908 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 18, 2026
8	Pattern Energy	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 18, 2026	501-1,000	755 contacts →
	Strong evidence “Pattern Energy is one of the world’s largest privately-owned developers and operators of wind, solar, transmission, and energy storage projects.” Source: RevenueBase Database · checked Sep 18, 2026
9	SEL Construction Corporation	Partial evidence	Loomis, CA, United StatesHQ checked Sep 18, 2026	n/a	722 contacts →
	Partial evidence “Experienced commercial contractor specializing in renewable energy, electrical, and roofing projects for privately-owned buildings as well as state/local government buildings in…” Source: RevenueBase Database · checked Sep 18, 2026
10	LUMIO	Indirect evidence	Lehi, UT, United StatesHQ checked Sep 18, 2026	5,001-10,000	719 contacts →
	Indirect evidence “We’re on a mission to make power personal.” Source: RevenueBase Database · checked Sep 18, 2026
11	Baker Electric	Partial evidence	Escondido, CA, United StatesHQ checked Sep 18, 2026	501-1,000	680 contacts →
	Partial evidence “Baker Electric is a full-service electrical contractor and energy infrastructure expert headquartered in Escondido, California.” Source: RevenueBase Database · checked Sep 18, 2026
12	Strata Clean Energy	Partial evidence	Durham, NC, United StatesHQ checked Sep 18, 2026	501-1,000	631 contacts →
	Partial evidence “Strata Clean Energy is a fully integrated energy infrastructure company serving utilities, independent power producers, and hyperscalers navigating the rapid transformation of the…” Source: RevenueBase Database · checked Sep 18, 2026
13	Depcom Power, INC	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 18, 2026	1,001-5,000	624 contacts →
	Partial evidence “DEPCOM Power, a Koch Engineered Solutions Company, is a leading solar energy solutions partner providing Development Support, Engineering, Procurement & Construction (EPC)…” Source: RevenueBase Database · checked Sep 18, 2026
14	Nexamp	Partial evidence	Boston, MA, United StatesHQ checked Sep 18, 2026	201-500	607 contacts →
	Partial evidence “Nexamp is leading the transformation to the new energy economy with proven solutions for the deployment and operation of solar energy assets.” Source: RevenueBase Database · checked Sep 18, 2026
15	Apex Clean Energy	Partial evidence	Charlottesville, VA, United StatesHQ checked Sep 18, 2026	201-500	594 contacts →
	Partial evidence “Apex Clean Energy was founded with a singular focus: to accelerate the shift to clean energy.” Source: RevenueBase Database · checked Sep 18, 2026
16	APR Energy	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 18, 2026	201-500	502 contacts →
	Partial evidence “APR Energy delivers reliable electricity, fast.” Source: RevenueBase Database · checked Sep 18, 2026
17	Atlas Renewable Energy	Partial evidence	Miami, FL, United StatesHQ checked Sep 18, 2026	201-500	500 contacts →
	Partial evidence “Atlas Renewable Energy delivers clean energy at scale.” Source: RevenueBase Database · checked Sep 18, 2026
18	RRC Companies	Partial evidence	Round Rock, TX, United StatesHQ checked Sep 18, 2026	201-500	494 contacts →
	Partial evidence “RRC is a top-tier designer of utility-scale wind, solar, energy storage, data center, and oil & gas projects in the US and select international markets.” Source: RevenueBase Database · checked Sep 18, 2026
19	Noresco	Partial evidence	Westborough, MA, United StatesHQ checked Sep 18, 2026	201-500	481 contacts →
	Partial evidence “NORESCO, a part of Carrier Global Corporation, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Source: RevenueBase Database · checked Sep 18, 2026
20	Babcock Power	Indirect evidence	Danvers, MA, United StatesHQ checked Sep 18, 2026	501-1,000	476 contacts →
	Indirect evidence “Finding a single capable partner to support both large- and small-scale power generation needs can be challenging.” Source: RevenueBase Database · checked Sep 18, 2026
21	REC Solar	Indirect evidence	San Luis Obispo, CA, United StatesHQ checked Sep 18, 2026	n/a	471 contacts →
	Indirect evidence “Founded in 1997, REC Solar has emerged as a leader in the solar industry, installing 800+ solar and storage solutions for commercial and public sector customers nationwide.” Source: RevenueBase Database · checked Sep 18, 2026
22	Enfinity Global	Indirect evidence	Miami, FL, United StatesHQ checked Sep 18, 2026	201-500	428 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
23	EDP Renewables North America	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	425 contacts →
	Partial evidence “EDP Renewables North America LLC (EDPR NA), its affiliates, and its subsidiaries develop, construct, own, and operate wind farms, solar parks, and energy storage systems…” Source: RevenueBase Database · checked Sep 18, 2026
24	Signal Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	409 contacts →
	Partial evidence “Signal Energy is a leading full service design/build contractor providing Engineering, Procurement, and Construction (EPC) services for renewable energy & infrastructure projects.” Source: RevenueBase Database · checked Sep 18, 2026
25	Energy Systems Group ESG	Partial evidence	Newburgh, IN, United StatesHQ checked Sep 18, 2026	201-500	398 contacts →
	Partial evidence “Energy Systems Group (ESG) is a leading provider of performance-driven energy and infrastructure solutions nationwide.” Source: RevenueBase Database · checked Sep 18, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: sustainable energy developers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names sustainable energy developers.
Partial evidence: Its own public description names part of sustainable energy developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable energy developers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,985 sustainable energy developers based in the United States

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Sustainable energy developers based in the United States at a glance

As of Sep 18, 2026

36.2%Verified-email coverage

26.6Average contacts per company

11-50Median size (employees)

3.0%Largest-city concentration · New York

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

1,209

11-50

1,184

51-200

405

201-500

100

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 2,985 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among sustainable energy developers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “sustainable energy developers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names sustainable energy developers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among sustainable energy developers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 28,809 across the full list. 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 18, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Sustainable energy developers by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names sustainable energy developers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many sustainable energy developers are there based in the United States?

RevenueBase identified 2,985 sustainable energy developers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Sunrun, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most sustainable energy developers?

New York leads with 89 headquartered companies, followed by Houston (74) and Austin (51).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 28,809 verified decision-maker contacts tracked across these 2,985 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 18, 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 Smart Search, 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.