Company lists · Data refreshed September 2026

Top 25 Rooftop solar companies based in Spain

Name: Rooftop solar companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,276 companies tracked

RevenueBase identified 1,276 rooftop solar companies headquartered in Spain as of September 2026 and tracks 13,012 professional contacts across them, including 1,233 with verified work emails. Madrid is the largest hub.

This list covers rooftop solar 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 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

1,276Companies

13,012Contacts tracked

1,233Verified emails

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The 25 largest rooftop solar companies based in Spain

Ranked by team size

Top 25 of 1,276 rooftop solar companies 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 rooftop solar 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Grupotec	Indirect evidence	Valencia, SpainHQ checked Sep 17, 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 17, 2026
2	Holaluz	Partial evidence	Barcelona, SpainHQ checked Sep 17, 2026	201-500	345 contacts →
	Partial evidence “Building the most impactful green energy community in Europe by unleashing the full potential of electrifying energy demand by scaling distributed Solar and Storage.” Source: RevenueBase Database · checked Sep 17, 2026
3	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
4	Enerland	Partial evidence	Zaragoza, SpainHQ checked Sep 17, 2026	51-200	262 contacts →
	Partial 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 17, 2026
5	Resgreen Europe SL	Indirect evidence	Alcorcón, SpainHQ checked Sep 17, 2026	201-500	253 contacts →
	Indirect evidence “Nacemos en enero de 2014 con vocación de ser un referente en el desarrollo de las áreas de servicios de empresas de energía renovable a nivel nacional e internacional.” Source: RevenueBase Database · checked Sep 17, 2026
6	ID Energy Group	Partial evidence	Ciudad Real, SpainHQ checked Sep 17, 2026	201-500	210 contacts →
	Partial evidence “ID Energy Group is an international corporate group that is dedicated to renewable energy and specialised in solar photovoltaic energy.” Source: RevenueBase Database · checked Sep 17, 2026
7	Enerside Energy	Partial evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	205 contacts →
	Partial evidence “Enerside is a fast-growing, fully integrated solar photovoltaic platform with a global presence and headquarters in Barcelona, Spain.” Source: RevenueBase Database · checked Sep 17, 2026
8	Solarprofit	Partial evidence	Llinars Del Vallès, SpainHQ checked Sep 17, 2026	501-1,000	199 contacts →
	Partial evidence “SolarProfit es la compañía líder especializada en energías renovables, como energía solar fotovoltaica y sistemas de aerotermia.” Source: RevenueBase Database · checked Sep 17, 2026
9	Lowind	Indirect evidence	Huarte, SpainHQ checked Sep 17, 2026	51-200	199 contacts →
	Indirect evidence “Somos una compañía especializada en instalación y mantenimiento de aerogeneradores, plantas fotovoltáicas e instalaciones eléctricas en edificios y plantas industriales.” Source: RevenueBase Database · checked Sep 17, 2026
10	Rioglass	Partial evidence	Mieres, SpainHQ checked Sep 17, 2026	501-1,000	155 contacts →
	Partial 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 17, 2026
11	Cansol Energy Solutions	Indirect evidence	Granada, SpainHQ checked Sep 17, 2026	51-200	151 contacts →
	Indirect evidence “CANSOL ENERGY SOLUTIONS, construyendo un futuro sostenible.” Source: RevenueBase Database · checked Sep 17, 2026
12	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
13	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
14	POWEN	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	103 contacts →
	Partial 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 17, 2026
15	Autosolar Energy Solutions	Partial evidence	Alcàsser, SpainHQ checked Sep 17, 2026	51-200	98 contacts →
	Partial evidence “AutoSolar es la tienda solar líder en España.” Source: RevenueBase Database · checked Sep 17, 2026
16	Ríos Renovables	Indirect evidence	Fustiñana, SpainHQ checked Sep 17, 2026	201-500	95 contacts →
	Indirect evidence “RÍOS Renovables Group es un grupo empresarial consolidado en el mercado de las energías renovables.” Source: RevenueBase Database · checked Sep 17, 2026
17	Grupo Zaragozá	Indirect evidence	Valencia, SpainHQ checked Sep 17, 2026	51-200	88 contacts →
	Indirect evidence “We have history, we’re present, creating future” Zaragozá Group is a group that has grown and adapted to the business opportunities that have arisen.” Source: RevenueBase Database · checked Sep 17, 2026
18	Diverxia	Indirect evidence	Valencia, SpainHQ checked Sep 17, 2026	51-200	83 contacts →
	Indirect evidence “Diverxia is a global company focused on the development and execution of large-scale renewable projects.” Source: RevenueBase Database · checked Sep 17, 2026
19	solfy.net	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	73 contacts →
	Indirect evidence “Solfy quiere revolucionar el modelo energético actual, ofreciendo a cada persona y empresa la posibilidad de producir y autoconsumir su propia energía, ahorrando dinero y…” Source: RevenueBase Database · checked Sep 17, 2026
20	Atersa Elecnor	Partial evidence	Ribarroja Del Túria, SpainHQ checked Sep 17, 2026	201-500	73 contacts →
	Partial evidence “Fruto de la fusión de las empresas ELECSOL y ATESOL, fundadas en 1979 y especializadas en la distribución de material solar fotovoltaico, nace APLICACIONES TÉCNICAS DE LA ENERGÍA…” Source: RevenueBase Database · checked Sep 17, 2026
21	ELTEX	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	71 contacts →
	Indirect evidence “Empresa experta en autoconsumo e instaladores de sistemas fotovoltaicos y aerotermia.” Source: RevenueBase Database · checked Sep 17, 2026
22	Im2	Partial evidence	Valencia, SpainHQ checked Sep 17, 2026	51-200	63 contacts →
	Partial 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 17, 2026
23	Baywa R.E. Solar Distribution ES	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	55 contacts →
	Indirect evidence “Electricidad y sol: lo que nos representa.” Source: RevenueBase Database · checked Sep 17, 2026
24	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
25	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

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: rooftop solar 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 rooftop solar companies.
Partial evidence: Its own public description names part of rooftop solar companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name rooftop solar 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 1,276 rooftop solar companies based in Spain

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Rooftop solar companies based in Spain at a glance

As of Sep 17, 2026

9.5%Verified-email coverage

10.2Average contacts per company

1-10Median size (employees)

11.5%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

667

11-50

471

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,276 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 rooftop solar 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 “rooftop solar 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 rooftop solar 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 rooftop solar 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, 1,233 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.

Rooftop solar companies by metro

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 rooftop solar 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 rooftop solar companies are there based in Spain?

RevenueBase identified 1,276 rooftop solar 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?

Grupotec, headquartered in Valencia, tops this list with the largest team on record.

Which city has the most rooftop solar companies?

Madrid leads with 147 headquartered companies, followed by Barcelona (55) and Valencia (44).

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 1,233 verified decision-maker contacts tracked across these 1,276 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.