Company lists · Data refreshed September 2026

Top 25 Photovoltaic installation companies based in the United States

Name: Photovoltaic installation 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 16, 2026 4,478 companies tracked

RevenueBase identified 4,478 company matches for photovoltaic installation companies associated with the United States as of September 2026 and tracks 104,591 professional contacts across them, including 34,233 with verified work emails. San Diego is the largest hub.

This list covers company matches for photovoltaic installation 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 16, 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 16, 2026 How this list was built

4,478Companies

104,591Contacts tracked

34,233Verified emails

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The 25 largest photovoltaic installation companies based in the United States

Ranked by team size

Top 25 of 4,478 company matches for photovoltaic installation companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 16, 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	Sunrun	Exact match	San Francisco, CA, United StatesHQ recorded Sep 16, 2026	10001+	7,974 contacts →
	Exact match “Life runs on clean energy.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
2	First Solar	Exact match	Tempe, AZ, United StatesHQ recorded Sep 16, 2026	5,001-10,000	5,581 contacts →
	Exact match “First Solar, Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
3	Enphase Energy	Exact match	Fremont, CA, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
4	Sunpower Corporation	Exact match	Richmond, CA, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
5	Freedom Forever	Exact match	Temecula, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,830 contacts →
	Exact match “Freedom Forever is a residential solar installation company that partners with solar sales companies in the industry.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
6	Trinity Solar	Exact match	Wall Township, NJ, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
7	Solv Energy	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
8	Blue Raven Solar	Exact match	Orem, UT, United StatesHQ recorded Sep 16, 2026	1,001-5,000	1,168 contacts →
	Exact match “Blue Raven Solar, a SunPower Company, is a retailer of residential home solar systems.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
9	Qcells North America	Exact match	Irvine, CA, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
10	Wanzek Construction, Inc., A Mastec Company	Exact match	Fargo, ND, United StatesHQ recorded Sep 16, 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 16, 2026 · View company records in RevenueBase
11	ION Solar	Exact match	Provo, UT, United StatesHQ recorded Sep 16, 2026	501-1,000	912 contacts →
	Exact match “Ion Solar is a premium, full-service solar provider.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
12	Grid Alternatives	Exact match	Oakland, CA, United StatesHQ recorded Sep 16, 2026	201-500	731 contacts →
	Exact match “GRID Alternatives is a national leader in bringing affordable solar power, clean mobility, and energy storage to underserved communities while creating pathways to life-changing…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
13	SEL Construction Corporation	Exact match	Loomis, CA, United StatesHQ recorded Sep 16, 2026	n/a	722 contacts →
	Exact match “Experienced commercial contractor specializing in renewable energy, electrical, and roofing projects for privately-owned buildings as well as state/local government buildings in…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
14	LUMIO	Exact match	Lehi, UT, United StatesHQ recorded Sep 16, 2026	5,001-10,000	719 contacts →
	Exact match “We’re on a mission to make power personal.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
15	Baker Electric	Exact match	Escondido, CA, United StatesHQ recorded Sep 16, 2026	501-1,000	680 contacts →
	Exact match “Baker Electric is a full-service electrical contractor and energy infrastructure expert headquartered in Escondido, California.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
16	Novasource Power Services	Exact match	Chandler, AZ, United StatesHQ recorded Sep 16, 2026	501-1,000	631 contacts →
	Exact match “NovaSource Power Services (“NovaSource”), a portfolio company of Clairvest Group Inc.(“Clairvest”, TSX: CVG) and OMERS Private Equity, the private equity arm of OMERS, is the…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
17	Depcom Power, INC	Exact match	Scottsdale, AZ, United StatesHQ recorded Sep 16, 2026	1,001-5,000	624 contacts →
	Exact match “DEPCOM Power, a Koch Engineered Solutions Company, is a leading solar energy solutions partner providing Development Support, Engineering, Procurement & Construction (EPC)…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
18	Nexamp	Exact match	Boston, MA, United StatesHQ recorded Sep 16, 2026	201-500	607 contacts →
	Exact match “Nexamp is leading the transformation to the new energy economy with proven solutions for the deployment and operation of solar energy assets.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
19	Greentech Renewables	Exact match	San Diego, CA, United StatesHQ recorded Sep 16, 2026	1,001-5,000	595 contacts →
	Exact match “As Greentech Renewables, we prioritize our commitment to providing customers with exceptional service and top-tier products from prominent renewable energy manufacturers.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
20	Apex Clean Energy	Exact match	Charlottesville, VA, United StatesHQ recorded Sep 16, 2026	201-500	594 contacts →
	Exact match “Apex Clean Energy was founded with a singular focus: to accelerate the shift to clean energy.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
21	Palmetto	Exact match	Charlotte, NC, United StatesHQ recorded Sep 16, 2026	201-500	539 contacts →
	Exact match “Palmetto is a leading clean tech company on a mission to accelerate the transition to a clean energy future.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
22	Unirac	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 16, 2026	51-200	525 contacts →
	Exact match “We’re reshaping the solar landscape with faster installs, stronger systems, and real support that helps pros work smarter.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
23	Posigen	Exact match	St. Rose, LA, United StatesHQ recorded Sep 16, 2026	501-1,000	507 contacts →
	Exact match “PosiGen is the nation's leading residential solar and energy efficiency provider.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
24	Freedom Solar Pros LLC	Exact match	Chandler, AZ, United StatesHQ recorded Sep 16, 2026	51-200	484 contacts →
	Exact match “The future of Solar Sales” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase
25	Noresco	Exact match	Westborough, MA, United StatesHQ recorded Sep 16, 2026	201-500	481 contacts →
	Exact match “NORESCO, a part of Carrier Global Corporation, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Recorded in the RevenueBase company graph · Sep 16, 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 “photovoltaic installation 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 4,478 photovoltaic installation companies based in the United States

See the full list, filter by size, metro and specialty, and access 34,233 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Photovoltaic installation companies based in the United States at a glance

As of Sep 16, 2026

32.7%Verified-email coverage

23.4Average 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

1,680

11-50

1,886

51-200

648

201-500

139

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 4,478 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 “photovoltaic installation 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 34,233 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 16, 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.

Photovoltaic installation 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 “photovoltaic installation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many photovoltaic installation companies are there based in the United States?

RevenueBase identified 4,478 company matches for photovoltaic installation 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?

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

Which city has the most photovoltaic installation companies?

San Diego leads with 87 company records, followed by Houston (72) and New York (64).

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 34,233 professional contacts with verified work emails tracked across these 4,478 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 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 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.