Company lists · Data refreshed September 2026

Top 25 Photovoltaic materials companies based in the United States

RevenueBase identified 480 photovoltaic materials companies headquartered in the United States as of September 2026 and tracks 17,252 professional contacts across them, including 5,252 with verified work emails. San Francisco is the largest hub.

This list covers photovoltaic materials 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
480Companies
17,252Contacts tracked
5,252Verified emails
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The 25 largest photovoltaic materials companies based in the United States

Ranked by team size
Top 25 of 480 photovoltaic materials 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 photovoltaic materials 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 evidenceTempe, AZ, United StatesHQ checked Sep 16, 20265,001-10,0005,581 contacts →

Indirect evidence

“First Solar, Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
2Indirect evidenceIrvine, CA, United StatesHQ checked Sep 16, 2026501-1,000954 contacts →

Indirect 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
3Indirect evidenceHemlock, MI, United StatesHQ checked Sep 16, 20261,001-5,000791 contacts →

Indirect evidence

“About Hemlock Semiconductor Hemlock Semiconductor Operations (HSC) is a leading provider of hyper-pure polycrystalline silicon (polysilicon) and other silicon-based products used…”

Source: RevenueBase Database · checked Sep 16, 2026
4Indirect evidenceScottsdale, AZ, United StatesHQ checked Sep 16, 20261,001-5,000624 contacts →

Indirect 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
5Indirect evidenceBoston, MA, United StatesHQ checked Sep 16, 2026201-500607 contacts →

Indirect 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
6Indirect evidenceAlbuquerque, NM, United StatesHQ checked Sep 16, 202651-200525 contacts →

Indirect evidence

“We’re reshaping the solar landscape with faster installs, stronger systems, and real support that helps pros work smarter.”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidencePataskala, OH, United StatesHQ checked Sep 16, 20261,001-5,000315 contacts →

Indirect evidence

“Illuminate USA is an American leader in advanced clean energy manufacturing, dedicated to delivering cutting-edge solar panel technology and sustainable energy solutions.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceHillsboro, OR, United StatesHQ checked Sep 16, 20261,001-5,000270 contacts →

Indirect evidence

“SolarWorld manufactures and sells solar power solutions and in doing so contributes to a cleaner energy supply worldwide.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceSunnyvale, CA, United StatesHQ checked Sep 16, 202651-200221 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
10Indirect evidenceAustin, TX, United StatesHQ checked Sep 16, 202651-200163 contacts →

Indirect evidence

“T1 Energy (NYSE: TE) is building an integrated U.S.”

Source: RevenueBase Database · checked Sep 16, 2026
11Indirect evidenceMountain Iron, MN, United StatesHQ checked Sep 16, 2026501-1,000159 contacts →

Indirect evidence

“Founded in 2010, Heliene is an American manufacturer of high-quality solar modules with a commitment to U.S.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceManteca, CA, United StatesHQ checked Sep 16, 2026201-500153 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceFremont, CA, United StatesHQ checked Sep 16, 2026501-1,000151 contacts →

Partial evidence

“Solyndra designs and manufactures photovoltaic systems, comprised of panels and mounting hardware, for the commercial rooftop market.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceBoise, ID, United StatesHQ checked Sep 16, 2026201-500128 contacts →

Partial evidence

“NxEdge delivers engineered materials and coating solutions for industrial thin-film, semiconductor, and solar energy applications worldwide.”

Source: RevenueBase Database · checked Sep 16, 2026
15Indirect evidenceSan Antonio, TX, United StatesHQ checked Sep 16, 202651-200122 contacts →

Indirect evidence

“Mission Solar Energy is America's Module Company.”

Source: RevenueBase Database · checked Sep 16, 2026
16Indirect evidenceGreenwood, SC, United StatesHQ checked Sep 16, 2026201-500114 contacts →

Indirect evidence

“ES Foundry is the only US-based pure play solar foundry that provides Domestic Content Bonus ITC compliant product solutions for US end customers.”

Source: RevenueBase Database · checked Sep 16, 2026
17Indirect evidenceSanta Clara, CA, United StatesHQ checked Sep 16, 2026201-50091 contacts →

Indirect evidence

“MiaSolé is a producer of lightweight, flexible and power solar cells.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceRichmond, CA, United StatesHQ checked Sep 16, 2026201-50086 contacts →

Indirect evidence

“Good Energy.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceHouston, TX, United StatesHQ checked Sep 16, 2026201-50086 contacts →

Indirect evidence

“Founded in 2021, SEG is a leading vertically integrated PV manufacturer headquartered in Houston, Texas, U.S, and is dedicated to delivering reliable and cost-effective solar…”

Source: RevenueBase Database · checked Sep 16, 2026
20Indirect evidenceJackson, MI, United StatesHQ checked Sep 16, 202651-20084 contacts →

Indirect evidence

“Harvest Solar is an innovative and growing Michigan-based company leading the clean energy transition in the Midwest.”

Source: RevenueBase Database · checked Sep 16, 2026
21Indirect evidenceSimi Valley, CA, United StatesHQ checked Sep 16, 202651-20084 contacts →

Indirect evidence

“Fortune Energy is a leading nationwide wholesale distributor of top-tier solar products we provide from our warehouses.”

Source: RevenueBase Database · checked Sep 16, 2026
22Indirect evidenceThornton, CO, United StatesHQ checked Sep 16, 202651-20080 contacts →

Indirect evidence

“We bring together 40 years of R&D, 15 years of manufacturing, numerous awards and extensive patent protection to cement our leadership as the leading provider of CIGS thin-film…”

Source: RevenueBase Database · checked Sep 16, 2026
23Indirect evidenceBrookshire, TX, United StatesHQ checked Sep 16, 2026201-50078 contacts →

Indirect evidence

“Waaree is a global leader in solar energy, boasting the largest presence outside of China.”

Source: RevenueBase Database · checked Sep 16, 2026
24Indirect evidenceSaugerties, NY, United StatesHQ checked Sep 16, 202651-20075 contacts →

Indirect evidence

“Ceres Technologies, Inc.”

Source: RevenueBase Database · checked Sep 16, 2026
25Indirect evidenceAliso Viejo, CA, United StatesHQ checked Sep 16, 202611-5074 contacts →

Indirect evidence

“Cenergy Power is a California-based national solar company comprised of seasoned power system professionals and financial experts focused on one thing: delivering unmatched value…”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 480 photovoltaic materials companies based in the United States

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Photovoltaic materials companies based in the United States at a glance

As of Sep 16, 2026
30.4%Verified-email coverage
35.9Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · San Francisco
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
147
11-50
170
51-200
88
201-500
38
501-1,000
16
1,001-5,000
12
5,001-10,000
2
10001+
6

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 480 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 photovoltaic materials 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 “photovoltaic materials 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 photovoltaic materials 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 photovoltaic materials 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, 5,252 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 photovoltaic materials 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 photovoltaic materials companies are there based in the United States?

RevenueBase identified 480 photovoltaic materials 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?

First Solar, headquartered in Tempe, tops this list with the largest team on record.

Which city has the most photovoltaic materials companies?

San Francisco leads with 10 headquartered companies, followed by San Jose (10) and Houston (8).

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 5,252 verified decision-maker contacts tracked across these 480 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.