Company lists · Data refreshed September 2026

Top 25 Solar energy software companies based in the United States

RevenueBase identified 3,716 solar energy software companies headquartered in the United States as of September 2026 and tracks 85,892 professional contacts across them, including 28,815 with verified work emails and 26,776 with mobile numbers. San Diego is the largest hub.

This list covers solar energy software 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 6, 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 6, 2026 86% judged on-target in blind review
3,716Companies
85,892Contacts tracked
28,815Verified emails
26,776Mobile numbers
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The 25 largest solar energy software companies based in the United States

Ranked by team size
Top 25 of 3,716 solar energy software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to solar energy software 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
1Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 6, 202610001+7,974 contacts →

“Life runs on clean energy.”

Source: company website · checked Sep 6, 2026
2Partial evidenceTempe, AZ, United StatesHQ checked Sep 6, 20265,001-10,0005,581 contacts →

“First Solar, Inc.”

Source: company website · checked Sep 6, 2026
3Strong evidenceFremont, CA, United StatesHQ checked Sep 6, 20261,001-5,0003,130 contacts →

“Enphase Energy is a global energy technology company and the world’s leading supplier of microinverter-based solar and battery systems.”

Source: company website · checked Sep 6, 2026
4Partial evidenceArlington, VA, United StatesHQ checked Sep 6, 20261,001-5,0001,863 contacts →

“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: company website · checked Sep 6, 2026
5Partial evidenceWall Township, NJ, United StatesHQ checked Sep 6, 20261,001-5,0001,794 contacts →

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

Source: company website · checked Sep 6, 2026
6Strong evidenceSan Ramon, CA, United StatesHQ checked Sep 6, 20261,001-5,0001,763 contacts →

“At GE Digital, our focus is clear: delivering software that accelerates a new era of energy.”

Source: company website · checked Sep 6, 2026
7Strong evidenceHouston, TX, United StatesHQ checked Sep 6, 20261,001-5,0001,563 contacts →

“Quorum Software is a leading provider of energy software worldwide powering growth and profitability for energy businesses by connecting people, workflows, and systems with…”

Source: company website · checked Sep 6, 2026
8Partial evidenceOrem, UT, United StatesHQ checked Sep 6, 20261,001-5,0001,168 contacts →

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

Source: company website · checked Sep 6, 2026
9Strong evidenceIrvine, CA, United StatesHQ checked Sep 6, 2026501-1,000954 contacts →

“Qcells is a renowned complete energy solutions provider in solar cell and module, energy storage, downstream project business and energy retail.”

Source: company website · checked Sep 6, 2026
10Partial evidenceFremont, CA, United StatesHQ checked Sep 6, 2026501-1,000944 contacts →

“Since day one, Nextracker’s mission has been to transition the world to affordable, renewable power, by developing the highest-performing and resilient solar tracking technologies…”

Source: company website · checked Sep 6, 2026
11Partial evidenceProvo, UT, United StatesHQ checked Sep 6, 2026501-1,000912 contacts →

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

Source: company website · checked Sep 6, 2026
12Indirect evidenceLehi, UT, United StatesHQ checked Sep 6, 20265,001-10,000719 contacts →

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

Source: company website · checked Sep 6, 2026
13Partial evidenceSalt Lake City, UT, United StatesHQ checked Sep 6, 2026501-1,000699 contacts →

“In an era where the world is rapidly advancing towards a cleaner future through decarbonization, Energy Exemplar’s mission lies in ‘Empowering Transformative Energy Decisions’🪫…”

Source: company website · checked Sep 6, 2026
14Strong evidenceScottsdale, AZ, United StatesHQ checked Sep 6, 20261,001-5,000624 contacts →

“DEPCOM Power, a Koch Engineered Solutions Company, is a leading solar energy solutions partner providing Development Support, Engineering, Procurement & Construction (EPC)…”

Source: company website · checked Sep 6, 2026
15Strong evidenceBoston, MA, United StatesHQ checked Sep 6, 2026201-500607 contacts →

“Nexamp is leading the transformation to the new energy economy with proven solutions for the deployment and operation of solar energy assets.”

Source: company website · checked Sep 6, 2026
16Partial evidenceCharlotte, NC, United StatesHQ checked Sep 6, 2026201-500539 contacts →

“Palmetto is a leading clean tech company on a mission to accelerate the transition to a clean energy future.”

Source: company website · checked Sep 6, 2026
17Strong evidenceSt. Rose, LA, United StatesHQ checked Sep 6, 2026501-1,000507 contacts →

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

Source: company website · checked Sep 6, 2026
18Strong evidenceWaltham, MA, United StatesHQ checked Sep 6, 2026501-1,000494 contacts →

“Power Factors delivers renewable energy asset management software for global portfolios.”

Source: company website · checked Sep 6, 2026
19Partial evidenceChandler, AZ, United StatesHQ checked Sep 6, 202651-200484 contacts →

“The future of Solar Sales”

Source: company website · checked Sep 6, 2026
20Partial evidenceSan Luis Obispo, CA, United StatesHQ checked Sep 6, 2026n/a471 contacts →

“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: company website · checked Sep 6, 2026
21Strong evidenceSanta Ana, CA, United StatesHQ checked Sep 6, 20261,001-5,000459 contacts →

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

Source: company website · checked Sep 6, 2026
22Partial evidenceSandy, UT, United StatesHQ checked Sep 6, 2026201-500422 contacts →

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

Source: company website · checked Sep 6, 2026
23Partial evidenceHouston, TX, United StatesHQ checked Sep 6, 2026501-1,000417 contacts →

“At Stem, we’re reimagining technology to drive the energy transition.”

Source: company website · checked Sep 6, 2026
24Indirect evidenceDenver, United StatesHQ checked Sep 6, 2026501-1,000379 contacts →

“Established in 2019.”

Source: company website · checked Sep 6, 2026
25Partial evidenceIrvine, CA, United StatesHQ checked Sep 6, 2026201-500370 contacts →

“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: company website · checked Sep 6, 2026

Showing 25 of 3,716 solar energy software companies based in the United States

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Solar energy software companies based in the United States at a glance

As of Sep 6, 2026
33.5%Verified-email coverage
31.2%Mobile-number coverage
23.1Average contacts per company
11-50Median size (employees)
2.0%Largest-city concentration · San Diego
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
1,514
11-50
1,506
51-200
503
201-500
100
501-1,000
37
1,001-5,000
30
5,001-10,000
9
10001+
6

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 solar energy software 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 “solar energy software 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 solar energy software 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 solar energy software 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, 28,815 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 6, 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 solar energy software 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 solar energy software companies are there based in the United States?

RevenueBase identified 3,716 solar energy software 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 solar energy software companies?

San Diego leads with 73 headquartered companies, followed by Houston (65) and Austin (64).

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 28,815 verified decision-maker contacts tracked across these 3,716 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 6, 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.