Company lists · Data refreshed September 2026

Top 25 Solar thermal systems integrators worldwide

Name: Solar thermal systems integrators worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 26,194 companies tracked

RevenueBase identified 26,194 solar thermal systems integrators worldwide as of September 2026 and tracks 184,537 professional contacts across them, including 37,232 with verified work emails. The United States is the largest market and Lahore the largest hub.

This list covers solar thermal systems integrators worldwide, 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 29, 2026. Country and city lists for solar thermal systems integrators follow the table.

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 29, 2026 86% judged on-target in blind review

26,194Companies

184,537Contacts tracked

37,232Verified emails

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The 25 largest solar thermal systems integrators worldwide

Ranked by team size

Top 25 of 26,194 solar thermal systems integrators worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to solar thermal systems integrators: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Premier Energies Limited	Partial evidence	Secunderabad, IndiaHQ checked Sep 29, 2026	501-1,000	1,854 contacts →
	Partial evidence “INDIA'S FIRST LEED GOLD-RATED SOLAR MANUFACTURING FACILITY- The year was 1995, when Shri Surendarpal Singh Saluja established Premier Energies with the goal to harness the sun’s…” Source: RevenueBase Database · checked Sep 29, 2026
2	Solarsquare	Partial evidence	Mumbai, IndiaHQ checked Sep 29, 2026	1,001-5,000	1,812 contacts →
	Partial evidence “At SolarSquare, we make going solar simple, reliable, and worry-free.” Source: RevenueBase Database · checked Sep 29, 2026
3	Trinity Solar	Partial evidence	Wall Township, NJ, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,794 contacts →
	Partial evidence “Trinity Solar is one of the largest privately held residential solar companies in the nation.” Source: RevenueBase Database · checked Sep 29, 2026
4	Blue Raven Solar	Strong evidence	Orem, UT, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,168 contacts →
	Strong evidence “Blue Raven Solar, a SunPower Company, is a retailer of residential home solar systems.” Source: RevenueBase Database · checked Sep 29, 2026
5	EDF Solutions Solaires	Indirect evidence	Limonest, FranceHQ checked Sep 29, 2026	1,001-5,000	1,085 contacts →
	Indirect evidence “EDF solutions solaires est une filiale à 100% du groupe EDF et leader de l'autoconsommation solaire chez les particuliers depuis plus de 20 ans.” Source: RevenueBase Database · checked Sep 29, 2026
6	ION Solar	Partial evidence	Provo, UT, United StatesHQ checked Sep 29, 2026	501-1,000	912 contacts →
	Partial evidence “Ion Solar is a premium, full-service solar provider.” Source: RevenueBase Database · checked Sep 29, 2026
7	BAXI	Indirect evidence	Warwick, United KingdomHQ checked Sep 29, 2026	1,001-5,000	850 contacts →
	Indirect evidence “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Source: RevenueBase Database · checked Sep 29, 2026
8	Feenstra	Indirect evidence	Lelystad, NetherlandsHQ checked Sep 29, 2026	1,001-5,000	781 contacts →
	Indirect evidence “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Source: RevenueBase Database · checked Sep 29, 2026
9	Ilumisol Energia Solar	Partial evidence	Cascavel, BrazilHQ checked Sep 29, 2026	n/a	709 contacts →
	Partial evidence “Na Ilumisol Energia Solar, acreditamos que sustentabilidade e economia andam juntas.” Source: RevenueBase Database · checked Sep 29, 2026
10	Depcom Power, INC	Partial evidence	Scottsdale, AZ, United StatesHQ checked Sep 29, 2026	1,001-5,000	624 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 29, 2026
11	Nexamp	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	201-500	607 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 29, 2026
12	Greentech Renewables	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	595 contacts →
	Indirect evidence “As Greentech Renewables, we prioritize our commitment to providing customers with exceptional service and top-tier products from prominent renewable energy manufacturers.” Source: RevenueBase Database · checked Sep 29, 2026
13	Grupotec	Indirect evidence	Valencia, SpainHQ checked Sep 29, 2026	501-1,000	538 contacts →
	Indirect evidence “GRUPOTEC - Empresa multidisciplinar de ingeniería y arquitectura y líder en el sector de la energía fotovoltaica.” Source: RevenueBase Database · checked Sep 29, 2026
14	Fotus Distribuidora Solar	Partial evidence	Vila Velha, BrazilHQ checked Sep 29, 2026	501-1,000	496 contacts →
	Partial evidence “A Fotus Distribuidora Solar é uma distribuidora nacional de soluções em energia fotovoltaica, criada para impulsionar o crescimento sustentável do mercado solar no Brasil.” Source: RevenueBase Database · checked Sep 29, 2026
15	Freedom Solar Pros LLC	Partial evidence	Chandler, AZ, United StatesHQ checked Sep 29, 2026	51-200	484 contacts →
	Partial evidence “The future of Solar Sales” Source: RevenueBase Database · checked Sep 29, 2026
16	Wolf Gmbh	Partial evidence	Mainburg, GermanyHQ checked Sep 29, 2026	1,001-5,000	484 contacts →
	Partial evidence “As a leading supplier of heating and air handling systems, we are perfectly in tune with you.” Source: RevenueBase Database · checked Sep 29, 2026
17	REC Solar	Partial evidence	San Luis Obispo, CA, United StatesHQ checked Sep 29, 2026	n/a	471 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 29, 2026
18	Korra Energi	Indirect evidence	Cairo, EgyptHQ checked Sep 29, 2026	1,001-5,000	469 contacts →
	Indirect evidence “Korra Energi is a proud Egyptian leader in energy efficiency and construction services, backed by over 25 years of expertise and a vision of "Growth and Prosperity"(إعمار الأرض).” Source: RevenueBase Database · checked Sep 29, 2026
19	Sunpower Philippines Manufacturing Limited	Partial evidence	3rd Street, PhilippinesHQ checked Sep 29, 2026	201-500	459 contacts →
	Partial evidence “Go solar, reduce your energy bills and discover why SunPower is a world standard in solar solutions for homes, businesses and utilities.” Source: RevenueBase Database · checked Sep 29, 2026
20	Titan Solar Power	Partial evidence	Santa Ana, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	459 contacts →
	Partial evidence “EnergyAid acquired Titan Solar Power's intellectual property (IP) in March of 2025 through bankruptcy court.” Source: RevenueBase Database · checked Sep 29, 2026
21	Freyr Energy Services PVT LTD	Partial evidence	Hyderabad, IndiaHQ checked Sep 29, 2026	501-1,000	397 contacts →
	Partial evidence “Freyr Energy provides simplified solar solutions for homes & businesses, making clean energy accessible & affordable.” Source: RevenueBase Database · checked Sep 29, 2026
22	Energyscape Renewables	Indirect evidence	Denver, United StatesHQ checked Sep 29, 2026	501-1,000	379 contacts →
	Indirect evidence “Established in 2019.” Source: RevenueBase Database · checked Sep 29, 2026
23	ORB Energy	Partial evidence	Bengaluru, IndiaHQ checked Sep 29, 2026	201-500	377 contacts →
	Partial evidence “Orb Energy is a vertically integrated solar energy solutions provider - including manufacturing solar photovoltaic panels in Bengaluru and financing SME customers.” Source: RevenueBase Database · checked Sep 29, 2026
24	Supernova	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 29, 2026	201-500	370 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 29, 2026
25	Semper Solaris	Partial evidence	El Cajon, CA, United StatesHQ checked Sep 29, 2026	501-1,000	337 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 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: solar thermal systems integrators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names solar thermal systems integrators.
Partial evidence: Its own public description names part of solar thermal systems integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name solar thermal systems integrators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 26,194 solar thermal systems integrators worldwide

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Solar thermal systems integrators worldwide at a glance

As of Sep 29, 2026

20.2%Verified-email coverage

7.0Average contacts per company

1-10Median size (employees)

0.6%Largest-city concentration · Lahore

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

13,173

11-50

9,645

51-200

2,372

201-500

444

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 thermal systems integrators, 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.
Coverage: Every country. Country and city lists for solar thermal systems integrators are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “solar thermal systems integrators”. 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 thermal systems integrators), 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 thermal systems integrators, and records with no verified work email.
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, 37,232 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 29, 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.

Solar thermal systems integrators by location

79 lists · largest first

Every Solar thermal systems integrators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 thermal systems integrators, 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 thermal systems integrators are there worldwide?

RevenueBase identified 26,194 solar thermal systems integrators worldwide 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?

Premier Energies Limited, headquartered in Secunderabad, tops this list with the largest team on record.

Which country has the most solar thermal systems integrators?

The United States leads with 2,656 companies, followed by Brazil (2,081) and Germany (2,053). Every solar thermal systems integrators list by country and city is linked on this page.

Which city has the most solar thermal systems integrators?

Lahore leads with 145 headquartered companies, followed by Madrid (132) and Sao Paulo (130).

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 37,232 verified decision-maker contacts tracked across these 26,194 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 29, 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.