Company lists · Data refreshed September 2026

Top 25 Off grid solar system providers based in Spain

Name: Off grid solar system providers based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 379 companies tracked

RevenueBase identified 379 off grid solar system providers headquartered in Spain as of September 2026 and tracks 4,612 professional contacts across them, including 1,087 with verified work emails. Madrid is the largest hub.

This list covers off grid solar system providers 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 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

379Companies

4,612Contacts tracked

1,087Verified emails

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The 25 largest off grid solar system providers based in Spain

Ranked by team size

Top 25 of 379 off grid solar system providers based in Spain, 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Power Electronics	Partial evidence	Llíria, SpainHQ checked Sep 17, 2026	1,001-5,000	2,007 contacts →
	Partial evidence “Power Electronics is the leading manufacturer of solar inverters in Europe, Oceania, and America, and the global leader in energy storage inverter solutions.” Source: RevenueBase Database · checked Sep 17, 2026
2	Gransolar Group	Partial evidence	Alcobendas, SpainHQ checked Sep 17, 2026	1,001-5,000	295 contacts →
	Partial evidence “Gransolar is a group of vertically integrated companies specialized in photovoltaic solar energy.” Source: RevenueBase Database · checked Sep 17, 2026
3	ESR Energy Solutions	Partial evidence	Sant Boi De Llobregat, SpainHQ checked Sep 17, 2026	51-200	125 contacts →
	Partial evidence “Somos ESR Energy Solutions y llevamos más de 10 años llevando la energía solar a miles de hogares.” Source: RevenueBase Database · checked Sep 17, 2026
4	EAVE	Indirect evidence	Sta Cruz De Tenerife, SpainHQ checked Sep 17, 2026	51-200	113 contacts →
	Indirect evidence “Somos un equipo de profesionales especializados en energías renovables.” Source: RevenueBase Database · checked Sep 17, 2026
5	Ampere Energy	Indirect evidence	Puzol, SpainHQ checked Sep 17, 2026	51-200	56 contacts →
	Indirect evidence “Welcome to the new energy model.” Source: RevenueBase Database · checked Sep 17, 2026
6	IASOL	Partial evidence	Zaragoza, SpainHQ checked Sep 17, 2026	51-200	54 contacts →
	Partial evidence “Ingeniería y Aplicaciones Solares 2005 Zaragoza, S.L.(IASOL) es una empresa líder en Aragón en el desarrollo de energías limpias, que trabaja por el desarrollo sostenible y…” Source: RevenueBase Database · checked Sep 17, 2026
7	LRP Energy	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	52 contacts →
	Indirect evidence “Apostando por soluciones ecológicas, ofrecemos servicios que proporcionan independencia energética.” Source: RevenueBase Database · checked Sep 17, 2026
8	Solar360 DE Repsol Y Movistar	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	48 contacts →
	Partial evidence “Esto es inteligencia solar En Repsol y Movistar hemos unido nuestra experiencia en innovación y tecnología para crear una nueva solución de autoconsumo.” Source: RevenueBase Database · checked Sep 17, 2026
9	Geesol Renovables	Partial evidence	Salteras, SpainHQ checked Sep 17, 2026	51-200	42 contacts →
	Partial evidence “Empresa de planificación y ejecución de instalaciones fotovoltaicas (para autoconsumo, aisladas o de bombeo solar)” Source: RevenueBase Database · checked Sep 17, 2026
10	Comunidad Solar	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	35 contacts →
	Indirect evidence “Acercamos la energía renovable a tu hogar: Construimos un nuevo modelo de relación entre la energía y las personas.” Source: RevenueBase Database · checked Sep 17, 2026
11	SMA Ibérica	Indirect evidence	Sant Cugat Del Vallés, SpainHQ checked Sep 17, 2026	11-50	33 contacts →
	Indirect evidence “Energy that Changes El Grupo SMA, con un volumen de ventas de 1904 millones de euros en el año 2023, es la principal empresa de inversores fotovoltaicos a escala mundial, un…” Source: RevenueBase Database · checked Sep 17, 2026
12	Ijes Solar	Indirect evidence	Castalla, SpainHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence “Somos especialistas en el diseño e instalación de proyectos fotovoltaicos.” Source: RevenueBase Database · checked Sep 17, 2026
13	Plug & Play Energy	Indirect evidence	11, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “Somos una empresa española dedicada a la distribución de sistemas fotovoltaicos para aisladas, revamping o autoconsumo.” Source: RevenueBase Database · checked Sep 17, 2026
14	Solenver Soluciones Energéticas	Indirect evidence	Sudanell, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “SOLENVER está formado por un equipo cualificado y con amplia experiencia en el sector energético.” Source: RevenueBase Database · checked Sep 17, 2026
15	Techno SUN	Partial evidence	Paterna, SpainHQ checked Sep 17, 2026	11-50	22 contacts →
	Partial evidence “Distribuidores mayoristas especializados en energía solar fotovoltaica.” Source: RevenueBase Database · checked Sep 17, 2026
16	Seis Solar Fotovoltaica	Partial evidence	Móstoles, SpainHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “Distribuimos módulos solares, inversores fotovoltaicos, baterías, cargadores EV, estructuras y todo lo necesario para el instalador fotovoltaico.” Source: RevenueBase Database · checked Sep 17, 2026
17	Solarprat	Indirect evidence	Sant Boi De Llobregat, SpainHQ checked Sep 17, 2026	51-200	15 contacts →
	Indirect evidence “Ofrecemos un servicio integral para que el autoconsumo tanto en hogares como en empresas sea una realidad.” Source: RevenueBase Database · checked Sep 17, 2026
18	Silvasol, S.A	Partial evidence	Jávea, SpainHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Nuestra empresa es pionera en España en el aprovechamiento de la energía solar, sector en el que se inició su actividad en 1972.” Source: RevenueBase Database · checked Sep 17, 2026
19	Alfa Global	Partial evidence	Valencia, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “Somos una empresa con más de 25 años en el sector, especializada en el diseño de proyectos, tramitación, instalación y mantenimiento de instalaciones solares fotovoltaicas y…” Source: RevenueBase Database · checked Sep 17, 2026
20	ENDEF	Partial evidence	Zaragoza, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “ENDEF is a company born in 2012 that is committed to solar technological innovation through the offer of innovative solutions focused on renewable energies and energy efficiency.” Source: RevenueBase Database · checked Sep 17, 2026
21	Voltaic Renovables S.L.U	Indirect evidence	Olot, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Indirect evidence “En Voltaic somos especialistas en soluciones de energía renovable para hogares e industrias.” Source: RevenueBase Database · checked Sep 17, 2026
22	Solaryou	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “En SolarYou trabajamos para acelerar la transición hacia un modelo energético más sostenible, haciendo que el acceso a la energía solar sea sencillo, eficiente y sin…” Source: RevenueBase Database · checked Sep 17, 2026
23	Solarcasa Energy	Indirect evidence	Llagostera, SpainHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Som una companyia basada en la sostenibilitat i l'eficiència energètica, cercant tant el benefici econòmic com el el mediambiental.” Source: RevenueBase Database · checked Sep 17, 2026
24	Arconi Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Arconi Solutions is an international engineering firm incorporated in 2007 under the laws of Spain.” Source: RevenueBase Database · checked Sep 17, 2026
25	Westing Management LLC	Indirect evidence	Bilbao, SpainHQ checked Sep 17, 2026	51-200	9 contacts →
	Indirect evidence “WM – Westing Management LLC is a company that specializes in EPC (engineering, procurement and construction) services for the “green” energy sector.” Source: RevenueBase Database · checked Sep 17, 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: off grid solar system providers. 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 off grid solar system providers.
Partial evidence: Its own public description names part of off grid solar system providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name off grid solar system providers. 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 379 off grid solar system providers based in Spain

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Off grid solar system providers based in Spain at a glance

As of Sep 17, 2026

23.6%Verified-email coverage

12.2Average contacts per company

1-10Median size (employees)

9.2%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

205

11-50

142

51-200

201-500

1,001-5,000

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 379 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 Spain 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 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, 1,087 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.

Off grid solar system providers by metro

Off grid solar system providers in Madrid35

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 Spain?

RevenueBase identified 379 off grid solar system providers 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?

Power Electronics, headquartered in Lliria, tops this list with the largest team on record.

Which city has the most off grid solar system providers?

Madrid leads with 35 headquartered companies, followed by Barcelona (17) and Valencia (12).

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 1,087 verified decision-maker contacts tracked across these 379 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.