Company lists · Data refreshed September 2026

Top 25 Residential renewable energy companies based in Spain

Name: Residential renewable energy 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 780 companies tracked

RevenueBase identified 780 residential renewable energy companies headquartered in Spain as of September 2026 and tracks 11,867 professional contacts across them, including 1,357 with verified work emails. Madrid is the largest hub.

This list covers residential renewable 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 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

780Companies

11,867Contacts tracked

1,357Verified emails

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The 25 largest residential renewable energy companies based in Spain

Ranked by team size

Top 25 of 780 residential renewable energy 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 residential renewable energy 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	Grenergy	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	501-1,000	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 17, 2026
2	IGNIS	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	501-1,000	533 contacts →
	Partial evidence “We are a vertically integrated energy company and offer tailored solutions for large consumers and for new energy demands, such as data centers.” Source: RevenueBase Database · checked Sep 17, 2026
3	X-Elio	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	466 contacts →
	Strong evidence “X-ELIO: global leader in the development of renewable energy projects.” Source: RevenueBase Database · checked Sep 17, 2026
4	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
5	Fotowatio Renewable Ventures FRV	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	339 contacts →
	Strong evidence “We are world leaders in providing comprehensive renewable energy solutions.” Source: RevenueBase Database · checked Sep 17, 2026
6	Solaria Energía Y Medio Ambiente	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	305 contacts →
	Partial 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 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	Elawan Energy	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	189 contacts →
	Partial evidence “With more than 200 employees and a growing workforce, Elawan Energy provides integrated solutions across the clean energy lifecycle, from the promotion, development, and…” Source: RevenueBase Database · checked Sep 17, 2026
10	Greening	Strong evidence	Granada, SpainHQ checked Sep 17, 2026	501-1,000	175 contacts →
	Strong evidence “Greening is a global, vertically integrated renewable energy company that not only generates and markets its own green energy, but does so through a diversified portfolio of…” Source: RevenueBase Database · checked Sep 17, 2026
11	Rioglass	Strong evidence	Mieres, SpainHQ checked Sep 17, 2026	501-1,000	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 17, 2026
12	Cansol Energy Solutions	Partial evidence	Granada, SpainHQ checked Sep 17, 2026	51-200	151 contacts →
	Partial evidence “CANSOL ENERGY SOLUTIONS, construyendo un futuro sostenible.” Source: RevenueBase Database · checked Sep 17, 2026
13	Ecoener	Partial evidence	La Coruña, SpainHQ checked Sep 17, 2026	51-200	128 contacts →
	Partial evidence “Ecoener es una multinacional española especializada en energía renovables, con 37 años de experiencia en el desarrollo de proyectos que buscan una perfecta integración ambiental y…” Source: RevenueBase Database · checked Sep 17, 2026
14	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
15	EAVE	Partial evidence	Sta Cruz De Tenerife, SpainHQ checked Sep 17, 2026	51-200	113 contacts →
	Partial evidence “Somos un equipo de profesionales especializados en energías renovables.” Source: RevenueBase Database · checked Sep 17, 2026
16	Contigo Energía	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	110 contacts →
	Partial evidence “En Contigo Energía tenemos la vocación de acompañar a nuestros clientes en la transición hacia un futuro energético más responsable con el medio ambiente y por eso solo ofrecemos…” Source: RevenueBase Database · checked Sep 17, 2026
17	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
18	Autosolar Energy Solutions	Indirect evidence	Alcàsser, SpainHQ checked Sep 17, 2026	51-200	98 contacts →
	Indirect evidence “AutoSolar es la tienda solar líder en España.” Source: RevenueBase Database · checked Sep 17, 2026
19	Greenalia S.A	Strong evidence	A Coruña, SpainHQ checked Sep 17, 2026	51-200	87 contacts →
	Strong evidence “Greenalia is an independent renewable energy producer.” Source: RevenueBase Database · checked Sep 17, 2026
20	Diverxia	Partial evidence	Valencia, SpainHQ checked Sep 17, 2026	51-200	83 contacts →
	Partial evidence “Diverxia is a global company focused on the development and execution of large-scale renewable projects.” Source: RevenueBase Database · checked Sep 17, 2026
21	solfy.net	Partial evidence	Barcelona, SpainHQ checked Sep 17, 2026	51-200	73 contacts →
	Partial 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
22	Univergy Solar	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	71 contacts →
	Partial evidence “Univergy Solar es una empresa hispano-japonesa especializada en el desarrollo y construcción de proyectos de energía solar, eólica y de hidrógeno verde, incluyendo soluciones de…” Source: RevenueBase Database · checked Sep 17, 2026
23	Arena Green Power	Strong evidence	Seville, SpainHQ checked Sep 17, 2026	51-200	61 contacts →
	Strong evidence “ARENA Green Power is an independent Renewable Energy company focused in the Development, Construction and Operation of proprietary projects and also in providing turnkey…” Source: RevenueBase Database · checked Sep 17, 2026
24	Bluetree Group	Strong evidence	Madrid, SpainHQ checked Sep 17, 2026	51-200	60 contacts →
	Strong evidence “Helping investors and energy companies maximise renewable asset performance while keeping risk under control.” Source: RevenueBase Database · checked Sep 17, 2026
25	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

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: residential renewable 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 residential renewable energy companies.
Partial evidence: Its own public description names part of residential renewable energy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential renewable 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 780 residential renewable energy companies based in Spain

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Residential renewable energy companies based in Spain at a glance

As of Sep 17, 2026

11.4%Verified-email coverage

15.2Average contacts per company

1-10Median size (employees)

15.4%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

412

11-50

263

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 780 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 residential renewable 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 “residential renewable 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 residential renewable 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 residential renewable 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, 1,357 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.

Residential renewable energy companies by metro

Residential renewable energy companies in Madrid120
Residential renewable energy companies in Barcelona31

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 residential renewable 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 residential renewable energy companies are there based in Spain?

RevenueBase identified 780 residential renewable 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 residential renewable energy companies?

Madrid leads with 120 headquartered companies, followed by Barcelona (31) and Valencia (22).

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 1,357 verified decision-maker contacts tracked across these 780 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.