Company lists · Data refreshed September 2026

Top 25 Residential renewable energy companies based in the United States

Name: Residential renewable energy 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 3,580 companies tracked

RevenueBase identified 3,580 residential renewable energy companies headquartered in the United States as of September 2026 and tracks 113,846 professional contacts across them, including 38,568 with verified work emails. Houston is the largest hub.

This list covers residential renewable energy companies 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 17, 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 17, 2026 86% judged on-target in blind review

3,580Companies

113,846Contacts tracked

38,568Verified emails

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

Ranked by team size

Top 25 of 3,580 residential renewable energy companies based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to residential renewable energy companies: 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	Constellation	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 17, 2026	10001+	9,458 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
2	DTE Energy	Partial evidence	Detroit, MI, United StatesHQ checked Sep 17, 2026	10001+	9,087 contacts →
	Partial evidence “DTE is one of the largest Fortune 500 diversified energy companies, proudly serving Michigan for over a century.” Source: RevenueBase Database · checked Sep 17, 2026
3	Sunrun	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	10001+	7,974 contacts →
	Partial evidence “Life runs on clean energy.” Source: RevenueBase Database · checked Sep 17, 2026
4	Enphase Energy	Partial evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,130 contacts →
	Partial evidence “Enphase Energy is a global energy technology company and the world’s leading supplier of microinverter-based solar and battery systems.” Source: RevenueBase Database · checked Sep 17, 2026
5	Sunpower Corporation	Partial evidence	Richmond, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,675 contacts →
	Partial evidence “We believe clean energy and backup storage should be accessible to everybody.” Source: RevenueBase Database · checked Sep 17, 2026
6	Fluence	Partial evidence	Arlington, VA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,863 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
7	Freedom Forever	Partial evidence	Temecula, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,830 contacts →
	Partial evidence “Freedom Forever is a residential solar installation company that partners with solar sales companies in the industry.” Source: RevenueBase Database · checked Sep 17, 2026
8	Trinity Solar	Partial evidence	Wall Township, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,794 contacts →
	Partial evidence “Trinity Solar is one of the largest privately held residential solar companies in the nation.” Source: RevenueBase Database · checked Sep 17, 2026
9	Just Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,645 contacts →
	Partial evidence “Established in 1997, Just Energy has been a leading retail energy provider serving markets across the United States and Canada.” Source: RevenueBase Database · checked Sep 17, 2026
10	IGS Energy	Partial evidence	Dublin, OH, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,388 contacts →
	Partial evidence “IGS Energy has been a trusted energy advisor since 1989, growing into one of the nation’s top energy retailers.” Source: RevenueBase Database · checked Sep 17, 2026
11	Solv Energy	Strong evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,286 contacts →
	Strong 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 17, 2026
12	Powur, PBC	Partial evidence	San Diego, United StatesHQ checked Sep 17, 2026	n/a	1,199 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
13	Blue Raven Solar	Partial evidence	Orem, UT, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,168 contacts →
	Partial evidence “Blue Raven Solar, a SunPower Company, is a retailer of residential home solar systems.” Source: RevenueBase Database · checked Sep 17, 2026
14	Goodleap	Partial evidence	Roseville, CA, United StatesHQ checked Sep 17, 2026	501-1,000	1,143 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
15	Qcells North America	Partial evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	501-1,000	954 contacts →
	Partial evidence “Qcells is a renowned complete energy solutions provider in solar cell and module, energy storage, downstream project business and energy retail.” Source: RevenueBase Database · checked Sep 17, 2026
16	Wanzek Construction, Inc., A Mastec Company	Strong evidence	Fargo, ND, United StatesHQ checked Sep 17, 2026	1,001-5,000	933 contacts →
	Strong 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 17, 2026
17	ION Solar	Indirect evidence	Provo, UT, United StatesHQ checked Sep 17, 2026	501-1,000	912 contacts →
	Indirect evidence “Ion Solar is a premium, full-service solar provider.” Source: RevenueBase Database · checked Sep 17, 2026
18	Sunnova Energy	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	906 contacts →
	Partial evidence “Sunnova Energy International Inc.(NYSE: NOVA) is an industry-leading energy services company focused on making clean energy more accessible, reliable, and affordable for…” Source: RevenueBase Database · checked Sep 17, 2026
19	Clearway Energy Group	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	501-1,000	795 contacts →
	Partial evidence “Clearway Energy Group’s vision is a world powered by clean energy.” Source: RevenueBase Database · checked Sep 17, 2026
20	Pattern Energy	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 17, 2026	501-1,000	755 contacts →
	Partial 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 17, 2026
21	LUMIO	Indirect evidence	Lehi, UT, United StatesHQ checked Sep 17, 2026	5,001-10,000	719 contacts →
	Indirect evidence “We’re on a mission to make power personal.” Source: RevenueBase Database · checked Sep 17, 2026
22	Dynegy	Partial evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	705 contacts →
	Partial evidence “At Dynegy, we deliver more than just power to residential, municipal, commercial, and industrial customers across several states.” Source: RevenueBase Database · checked Sep 17, 2026
23	Nexamp	Partial evidence	Boston, MA, United StatesHQ checked Sep 17, 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 17, 2026
24	Greentech Renewables	Strong evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	595 contacts →
	Strong evidence “As Greentech Renewables, we prioritize our commitment to providing customers with exceptional service and top-tier products from prominent renewable energy manufacturers.” Source: RevenueBase Database · checked Sep 17, 2026
25	Apex Clean Energy	Partial evidence	Charlottesville, VA, United StatesHQ checked Sep 17, 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 17, 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: residential renewable energy companies. 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 residential renewable energy companies.
Partial evidence: Its own public description names part of residential renewable energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential renewable energy companies. 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 3,580 residential renewable energy companies based in the United States

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Residential renewable energy companies based in the United States at a glance

As of Sep 17, 2026

33.9%Verified-email coverage

31.8Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

1,416

11-50

1,447

51-200

505

201-500

108

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 3,580 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 residential renewable energy companies, 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 “residential renewable energy companies”. 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 residential renewable energy companies), 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 residential renewable energy companies, 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, 38,568 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 17, 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.

Residential renewable energy companies 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 residential renewable energy companies, 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 residential renewable energy companies are there based in the United States?

RevenueBase identified 3,580 residential renewable energy companies 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?

Constellation, headquartered in Baltimore, tops this list with the largest team on record.

Which city has the most residential renewable energy companies?

Houston leads with 74 headquartered companies, followed by San Diego (71) and New York (68).

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 38,568 verified decision-maker contacts tracked across these 3,580 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 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 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.