Company lists · Data refreshed September 2026
Top 25 Solar thermal energy companies based in Spain
RevenueBase identified 633 solar thermal energy companies headquartered in Spain as of September 2026 and tracks 6,171 professional contacts across them, including 728 with verified work emails. Madrid is the largest hub.
This list covers solar thermal energy companies headquartered in Spain, 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 18, 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.
The 25 largest solar thermal energy companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 699 contacts → | ||||
Partial evidence “The on-demand energy producer empowering ever-changing lives Grenergy is a Spanish multinational clean energy producer.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 2 | 305 contacts → | ||||
Strong evidence “Solaria Energía y Medio Ambiente is a company dedicated to selling carbon free energy generated by its solar plants.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 3 | 295 contacts → | ||||
Strong evidence “Gransolar is a group of vertically integrated companies specialized in photovoltaic solar energy.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 4 | 262 contacts → | ||||
Strong evidence “Enerland nace en España en el año 2007 con el objetivo de ser líder del mercado solar fotovoltaico internacional, proporcionando soluciones Llaves en Mano a sus clientes en…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 5 | 199 contacts → | ||||
Strong evidence “SolarProfit es la compañía líder especializada en energías renovables, como energía solar fotovoltaica y sistemas de aerotermia.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 6 | 155 contacts → | ||||
Strong evidence “Rioglass Solar is an international renewable energy company with more than 15 years of experience in the solar power industry.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 7 | 103 contacts → | ||||
Partial evidence “IMENERGY Power Plants S.L.(IMENERGY) es una compañía especializada en proyectos de generación de energía, principalmente de fuentes renovables.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 8 | 103 contacts → | ||||
Strong evidence “En POWEN Somos los especialistas en energía solar fotovoltaica para los clientes que desean una alternativa energética basada en el ahorro, respeto por el medio ambiente y el uso…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 9 | 98 contacts → | ||||
Partial evidence “AutoSolar es la tienda solar líder en España.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 10 | 71 contacts → | ||||
Indirect evidence “Empresa experta en autoconsumo e instaladores de sistemas fotovoltaicos y aerotermia.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 11 | 63 contacts → | ||||
Strong evidence “IM2 Energía Solar, especialista en soluciones energéticas, realiza proyectos de inversión en energía solar desde 2003, posicionándose actualmente como empresa referente en el…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 12 | 60 contacts → | ||||
Indirect evidence “Since 1976 we are dedicated to the production and sale of products aimed at the hvac and comfort.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 13 | 52 contacts → | ||||
Partial evidence “Apostando por soluciones ecológicas, ofrecemos servicios que proporcionan independencia energética.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 14 | 44 contacts → | ||||
Strong evidence “We are an engineering and consulting company specialised in solar energy and energy efficiency.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 15 | 42 contacts → | ||||
Partial evidence “Especialistas en ahorro energético y eficiencia energética.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 16 | 39 contacts → | ||||
Partial evidence “Nuestra visión es hacer que todos podamos vivir de las energías renovables para siempre y gratis.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 17 | 38 contacts → | ||||
Strong evidence “Ingeniería e instaladora de energía solar fotovoltaica.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 18 | 38 contacts → | ||||
Strong evidence “Fundada en 2006 Norsol es una compañía especializada en energía solar fotovoltaica.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 19 | 37 contacts → | ||||
Partial evidence “Alter Enersun fue fundada en 2009, somos una de las empresas de referencia en el sector de las energías renovables, específicamente en la producción de energía fotovoltaica…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 20 | 35 contacts → | ||||
Partial evidence “Empresa dedicada al diseño y ejecución de instalaciones de climatización, calefacción, solar térmica y fotovoltaica, extracción de aire, cocinas industriales, lavandería…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 21 | 34 contacts → | ||||
Indirect evidence “Sistemas de Calor es una empresa especializada en el diseño, ejecución llave en mano, mantenimiento y servicio de asistencia técnica 24/7.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 22 | 33 contacts → | ||||
Strong evidence “Empresa netamente canaria en el sector de la Energía Solar Fotovoltáica - Energías Renovables.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 23 | 23 contacts → | ||||
Partial evidence “SOLENVER está formado por un equipo cualificado y con amplia experiencia en el sector energético.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 24 | 22 contacts → | ||||
Strong evidence “Solar energy & multisectorial technology experts.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 25 | 22 contacts → | ||||
Indirect evidence “Colaborador Oficial de Iberdrola- Solprolux, ubicada en Boadilla del Monte, la sede principal, y con dos puntos más de atención al cliente en Leganés y Moratalaz, además de varios…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
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 energy companies. 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 energy companies.
- Partial evidence
- Its own public description names part of solar thermal energy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name solar thermal energy companies. 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 633 solar thermal energy companies based in Spain
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Solar thermal energy companies based in Spain at a glance
As of Sep 18, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 633 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 solar thermal energy 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 Spain whose own description of what they do matches “solar thermal energy 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 thermal energy 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 thermal energy companies, and records with no verified work email. Companies headquartered outside Spain 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, 728 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 18, 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 energy companies by metro
- Solar thermal energy companies in Madrid81
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 energy 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 thermal energy companies are there based in Spain?
RevenueBase identified 633 solar thermal energy companies headquartered in Spain 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?
Grenergy, headquartered in Madrid, tops this list with the largest team on record.
Which city has the most solar thermal energy companies?
Madrid leads with 81 headquartered companies, followed by Barcelona (19) and Malaga (15).
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 728 verified decision-maker contacts tracked across these 633 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 18, 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.
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