Company lists · Data refreshed September 2026

Top 25 Residential solar panel companies based in the United States

RevenueBase identified 4,054 residential solar panel companies headquartered in the United States as of September 2026 and tracks 74,199 professional contacts across them, including 21,993 with verified work emails. San Diego is the largest hub.

This list covers residential solar panel 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 16, 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 16, 2026 86% judged on-target in blind review
4,054Companies
74,199Contacts tracked
21,993Verified emails
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The 25 largest residential solar panel companies based in the United States

Ranked by team size
Top 25 of 4,054 residential solar panel companies based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to residential solar panel 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 16, 202610001+7,974 contacts →

Indirect evidence

“Life runs on clean energy.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidenceFremont, CA, United StatesHQ checked Sep 16, 20261,001-5,0003,130 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 16, 2026
3Indirect evidenceRichmond, CA, United StatesHQ checked Sep 16, 20261,001-5,0002,675 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
4Strong evidenceTemecula, CA, United StatesHQ checked Sep 16, 20261,001-5,0001,830 contacts →

Strong evidence

“Freedom Forever is a residential solar installation company that partners with solar sales companies in the industry.”

Source: RevenueBase Database · checked Sep 16, 2026
5Strong evidenceWall Township, NJ, United StatesHQ checked Sep 16, 20261,001-5,0001,794 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 16, 2026
6Strong evidenceOrem, UT, United StatesHQ checked Sep 16, 20261,001-5,0001,168 contacts →

Strong evidence

“Blue Raven Solar, a SunPower Company, is a retailer of residential home solar systems.”

Source: RevenueBase Database · checked Sep 16, 2026
7Partial evidenceIrvine, CA, United StatesHQ checked Sep 16, 2026501-1,000954 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 16, 2026
8Partial evidenceProvo, UT, United StatesHQ checked Sep 16, 2026501-1,000912 contacts →

Partial evidence

“Ion Solar is a premium, full-service solar provider.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceLoomis, CA, United StatesHQ checked Sep 16, 2026n/a722 contacts →

Indirect 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 16, 2026
10Indirect evidenceLehi, UT, United StatesHQ checked Sep 16, 20265,001-10,000719 contacts →

Indirect evidence

“We’re on a mission to make power personal.”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceScottsdale, AZ, United StatesHQ checked Sep 16, 20261,001-5,000624 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 16, 2026
12Partial evidenceBoston, MA, United StatesHQ checked Sep 16, 2026201-500607 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 16, 2026
13Strong evidenceSt. Rose, LA, United StatesHQ checked Sep 16, 2026501-1,000507 contacts →

Strong evidence

“PosiGen is the nation's leading residential solar and energy efficiency provider.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceChandler, AZ, United StatesHQ checked Sep 16, 202651-200484 contacts →

Partial evidence

“The future of Solar Sales”

Source: RevenueBase Database · checked Sep 16, 2026
15Partial evidenceSan Luis Obispo, CA, United StatesHQ checked Sep 16, 2026n/a471 contacts →

Partial 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 16, 2026
16Partial evidenceSanta Ana, CA, United StatesHQ checked Sep 16, 20261,001-5,000459 contacts →

Partial evidence

“EnergyAid acquired Titan Solar Power's intellectual property (IP) in March of 2025 through bankruptcy court.”

Source: RevenueBase Database · checked Sep 16, 2026
17Partial evidenceSandy, UT, United StatesHQ checked Sep 16, 2026201-500422 contacts →

Partial evidence

“We don’t settle at Sunder, so you can expect exceptional service from start to finish in your switch to solar.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceDenver, United StatesHQ checked Sep 16, 2026501-1,000379 contacts →

Indirect evidence

“Established in 2019.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceIrvine, CA, United StatesHQ checked Sep 16, 2026201-500370 contacts →

Indirect evidence

“Supernova embodies the spirit of innovation and dedication to a sustainable future, making it a shining example of what it means to be a leader in the renewable energy industry.”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceEl Dorado Hills, CA, United StatesHQ checked Sep 16, 2026201-500368 contacts →

Indirect evidence

“V3 was founded as a response to the stagnation within the energy industry.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidencePhoenix, AZ, United StatesHQ checked Sep 16, 2026201-500351 contacts →

Indirect evidence

“https://ourworldenergy.com/”

Source: RevenueBase Database · checked Sep 16, 2026
22Strong evidenceEl Cajon, CA, United StatesHQ checked Sep 16, 2026501-1,000337 contacts →

Strong evidence

“Ranked #1 in Solar + Battery Installation in America by "Solar Power World" Go Solar American Style!#1 Veteran Owned Solar Company in California Solar Panels.”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidenceLaurel, MD, United StatesHQ checked Sep 16, 2026501-1,000337 contacts →

Partial evidence

“With tens of thousands of customers, Solar Energy World is the fastest growing solar and battery system installation company in our region, serving Delaware, Florida, Maryland…”

Source: RevenueBase Database · checked Sep 16, 2026
24Strong evidenceMedford, OR, United StatesHQ checked Sep 16, 202651-200300 contacts →

Strong evidence

“Founded in 2017, Purelight Power has quickly grown to be one of the nations largest residential solar installer.”

Source: RevenueBase Database · checked Sep 16, 2026
25Partial evidenceAuburn, MA, United StatesHQ checked Sep 16, 20261,001-5,000298 contacts →

Partial evidence

“Between all of us here at Bright Planet, we have unmatched experience with solar installation, sales partner support, and years in the customer service field.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 4,054 residential solar panel companies based in the United States

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Residential solar panel companies based in the United States at a glance

As of Sep 16, 2026
29.6%Verified-email coverage
18.3Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · San Diego
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
1,625
11-50
1,720
51-200
542
201-500
92
501-1,000
30
1,001-5,000
20
5,001-10,000
6
10001+
2

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 4,054 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 solar panel 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 solar panel 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 solar panel 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 solar panel 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, 21,993 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 16, 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.

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 solar panel 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 solar panel companies are there based in the United States?

RevenueBase identified 4,054 residential solar panel 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?

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

Which city has the most residential solar panel companies?

San Diego leads with 78 headquartered companies, followed by Houston (59) and Los Angeles (53).

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 21,993 verified decision-maker contacts tracked across these 4,054 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 16, 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.