Company lists · Data refreshed September 2026

Top 25 Off-grid energy system providers based in Spain

Name: Off-grid energy 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 241 companies tracked

RevenueBase identified 241 off-grid energy system providers headquartered in Spain as of September 2026 and tracks 3,748 professional contacts across them, including 232 with verified work emails. Madrid is the largest hub.

This list covers off-grid energy 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

241Companies

3,748Contacts tracked

232Verified emails

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The 25 largest off-grid energy system providers based in Spain

Ranked by team size

Top 25 of 241 off-grid energy 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 energy 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	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
2	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
3	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
4	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
5	Hesstec Hybrid Energy Storage Solutions LTD	Partial evidence	Paterna, SpainHQ checked Sep 17, 2026	11-50	61 contacts →
	Partial evidence “Hybrid Energy Storage Solution Ltd.(hereinafter called HESS Ltd.) is a technological solution provider, pioneer in creating hybrid energy storage solutions (HESS), optimized in…” Source: RevenueBase Database · checked Sep 17, 2026
6	Ampere Energy	Partial evidence	Puzol, SpainHQ checked Sep 17, 2026	51-200	56 contacts →
	Partial evidence “Welcome to the new energy model.” Source: RevenueBase Database · checked Sep 17, 2026
7	LRP Energy	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	201-500	52 contacts →
	Partial evidence “Apostando por soluciones ecológicas, ofrecemos servicios que proporcionan independencia energética.” Source: RevenueBase Database · checked Sep 17, 2026
8	Comunidad Solar	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	35 contacts →
	Partial 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
9	Sumsol	Partial evidence	Getafe, SpainHQ checked Sep 17, 2026	11-50	27 contacts →
	Partial evidence “Distribution of photovoltaic solar energy equipment” Source: RevenueBase Database · checked Sep 17, 2026
10	Awergy	Partial evidence	Elda, SpainHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “Somos AWERGY, una empresa de ingeniería especializada en energías renovables.” Source: RevenueBase Database · checked Sep 17, 2026
11	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
12	Solenver Soluciones Energéticas	Partial evidence	Sudanell, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Partial evidence “SOLENVER está formado por un equipo cualificado y con amplia experiencia en el sector energético.” Source: RevenueBase Database · checked Sep 17, 2026
13	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
14	Sonnen Spain	Partial evidence	Olot, SpainHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “La energía limpia y asequible para todos es uno de los mayores desafíos de nuestro tiempo.” Source: RevenueBase Database · checked Sep 17, 2026
15	Efiwatt	Partial evidence	Palma De Mallorca, SpainHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Impulsamos la energía del futuro en las Islas Baleares.” Source: RevenueBase Database · checked Sep 17, 2026
16	Pebblex	Partial evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “En Pebblex diseñamos y desplegamos sistemas de almacenamiento energético que hacen la transición renovable posible.” Source: RevenueBase Database · checked Sep 17, 2026
17	Voltaic Renovables S.L.U	Partial evidence	Olot, SpainHQ checked Sep 17, 2026	11-50	12 contacts →
	Partial evidence “En Voltaic somos especialistas en soluciones de energía renovable para hogares e industrias.” Source: RevenueBase Database · checked Sep 17, 2026
18	Solcam Energia	Partial evidence	Riudoms, SpainHQ checked Sep 17, 2026	11-50	10 contacts →
	Partial evidence “Impulsamos la transición energética del sector industrial con soluciones integrales y de gran escala.” Source: RevenueBase Database · checked Sep 17, 2026
19	Solarcasa Energy	Partial evidence	Llagostera, SpainHQ checked Sep 17, 2026	11-50	9 contacts →
	Partial 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
20	Solar In Spain	Partial evidence	Pedreguer, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Solar in Spain es una consultora de energías renovables con sede en Valencia.” Source: RevenueBase Database · checked Sep 17, 2026
21	Fundación EKI	Partial evidence	Getxo, SpainHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “En EKI damos acceso a la energía en África subsahariana con instalaciones solares, facilitando financiación solidaria y capacitación técnica.” Source: RevenueBase Database · checked Sep 17, 2026
22	Enersola Energía	Indirect evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “La experiencia nos avala.” Source: RevenueBase Database · checked Sep 17, 2026
23	Ethical Power Spain	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “Ethical Power Spain is a group company of Ethical Power Group.” Source: RevenueBase Database · checked Sep 17, 2026
24	Crusol Proyectos E Instalaciones, S.L	Indirect evidence	Cartagena, SpainHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Detrás de cada instalación fotovoltaica de Crusol hay algo que no se ve a simple vista, pero que lo cambia todo: ingeniería rigurosa.” Source: RevenueBase Database · checked Sep 17, 2026
25	Isgeneration Intelligent Systems Generation	Partial evidence	Puebla De Vallbona, SpainHQ checked Sep 17, 2026	1-10	7 contacts →
	Partial evidence “En Intelligent Systems Generation SLU, somos líderes en la distribución de soluciones fotovoltaicas avanzadas.” 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 energy 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 energy system providers.
Partial evidence: Its own public description names part of off-grid energy 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 energy 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 241 off-grid energy system providers based in Spain

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Off-grid energy system providers based in Spain at a glance

As of Sep 17, 2026

6.2%Verified-email coverage

15.6Average contacts per company

1-10Median size (employees)

14.1%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

139

11-50

51-200

201-500

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 241 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 energy 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 energy 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 energy 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 energy 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, 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 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 energy system providers by metro

Off-grid energy system providers in Madrid34

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 energy 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 energy system providers are there based in Spain?

RevenueBase identified 241 off-grid energy 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?

Holaluz, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most off-grid energy system providers?

Madrid leads with 34 headquartered companies, followed by Barcelona (10) and Valencia (7).

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 232 verified decision-maker contacts tracked across these 241 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.