Company lists · Data refreshed September 2026

Top 25 Off grid solar system providers based in the United States

RevenueBase identified 2,251 off grid solar system providers headquartered in the United States as of September 2026 and tracks 47,806 professional contacts across them, including 14,086 with verified work emails. San Diego is the largest hub.

This list covers off grid solar system providers 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
2,251Companies
47,806Contacts tracked
14,086Verified emails
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The 25 largest off grid solar system providers based in the United States

Ranked by team size
Top 25 of 2,251 off grid solar system providers 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 off grid solar system providers: 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 17, 202610001+7,974 contacts →

Indirect evidence

“Life runs on clean energy.”

Source: RevenueBase Database · checked Sep 17, 2026
2Indirect evidenceRichmond, CA, United StatesHQ checked Sep 17, 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 17, 2026
3Strong evidenceOrem, UT, United StatesHQ checked Sep 17, 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 17, 2026
4Partial evidenceProvo, UT, United StatesHQ checked Sep 17, 2026501-1,000912 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
5Indirect evidenceLehi, UT, United StatesHQ checked Sep 17, 20265,001-10,000719 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
6Partial evidenceScottsdale, AZ, United StatesHQ checked Sep 17, 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 17, 2026
7Partial evidenceBoston, MA, United StatesHQ checked Sep 17, 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 17, 2026
8Partial evidenceChandler, AZ, United StatesHQ checked Sep 17, 202651-200484 contacts →

Partial evidence

“The future of Solar Sales”

Source: RevenueBase Database · checked Sep 17, 2026
9Partial evidenceSan Luis Obispo, CA, United StatesHQ checked Sep 17, 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 17, 2026
10Indirect evidenceDenver, United StatesHQ checked Sep 17, 2026501-1,000379 contacts →

Indirect evidence

“Established in 2019.”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceIrvine, CA, United StatesHQ checked Sep 17, 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 17, 2026
12Indirect evidencePhoenix, AZ, United StatesHQ checked Sep 17, 2026201-500351 contacts →

Indirect evidence

“https://ourworldenergy.com/”

Source: RevenueBase Database · checked Sep 17, 2026
13Partial evidenceEl Cajon, CA, United StatesHQ checked Sep 17, 2026501-1,000337 contacts →

Partial 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 17, 2026
14Strong evidenceLaurel, MD, United StatesHQ checked Sep 17, 2026501-1,000337 contacts →

Strong 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 17, 2026
15Indirect evidenceRocklin, CA, United StatesHQ checked Sep 17, 2026201-500332 contacts →

Indirect evidence

“Innovative and sustainable key technologies are prerequisites for renewable energy supply.”

Source: RevenueBase Database · checked Sep 17, 2026
16Partial evidenceAsbury Park, NJ, United StatesHQ checked Sep 17, 2026201-500328 contacts →

Partial evidence

Solar Landscape is the nation’s leading distributed energy infrastructure company, transforming commercial real estate into a source of new power by deploying solar and storage at…”

Source: RevenueBase Database · checked Sep 17, 2026
17Partial evidenceMedford, OR, United StatesHQ checked Sep 17, 202651-200300 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
18Partial evidenceVerona, WI, United StatesHQ checked Sep 17, 202651-200294 contacts →

Partial evidence

“Everlight Solar provides homeowners with simple and affordable clean energy.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidencePensacola, FL, United StatesHQ checked Sep 17, 20261,001-5,000275 contacts →

Indirect evidence

“People.”

Source: RevenueBase Database · checked Sep 17, 2026
20Partial evidenceAustin, TX, United StatesHQ checked Sep 17, 2026501-1,000259 contacts →

Partial evidence

“Freedom Solar Power is the leader in turnkey solar installations in Texas, Colorado, Florida, Virginia and North Carolina, providing high quality, cost-effective, reliable solar…”

Source: RevenueBase Database · checked Sep 17, 2026
21Partial evidenceLincoln, CA, United StatesHQ checked Sep 17, 2026501-1,000222 contacts →

Partial evidence

“Even though it’s been decades since its invention, there’s still a lot of misinformation surrounding solar energy.”

Source: RevenueBase Database · checked Sep 17, 2026
22Partial evidenceSt Paul, MN, United StatesHQ checked Sep 17, 2026201-500218 contacts →

Partial evidence

“Novel Energy delivers solar energy solutions helping provide sustainable options to meet evolving energy needs.”

Source: RevenueBase Database · checked Sep 17, 2026
23Partial evidenceIsanti, MN, United StatesHQ checked Sep 17, 2026201-500207 contacts →

Partial evidence

“Wolf River Electric is a leading electrical and solar installation company established in 2014.”

Source: RevenueBase Database · checked Sep 17, 2026
24Indirect evidenceCumming, GA, United StatesHQ checked Sep 17, 202651-200188 contacts →

Indirect evidence

“RavenVolt Inc, An ABM Company provides turn-key microgrid solutions.”

Source: RevenueBase Database · checked Sep 17, 2026
25Partial evidenceBrooklyn, MD, United StatesHQ checked Sep 17, 2026201-500182 contacts →

Partial evidence

“Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 2,251 off grid solar system providers based in the United States

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Off grid solar system providers based in the United States at a glance

As of Sep 17, 2026
29.5%Verified-email coverage
21.2Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · San Diego
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
871
11-50
955
51-200
311
201-500
55
501-1,000
25
1,001-5,000
15
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 2,251 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 off grid solar system providers, 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 “off grid solar system providers”. 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 off grid solar system providers), 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 off grid solar system providers, 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, 14,086 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.

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 off grid solar system providers, 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 off grid solar system providers are there based in the United States?

RevenueBase identified 2,251 off grid solar system providers 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 off grid solar system providers?

San Diego leads with 43 headquartered companies, followed by Houston (40) and Los Angeles (31).

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 14,086 verified decision-maker contacts tracked across these 2,251 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.