Company lists · Data refreshed September 2026

Top 25 Residential solar designers based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 307 companies tracked

RevenueBase identified 307 residential solar designers headquartered in Spain as of September 2026 and tracks 1,991 professional contacts across them, including 190 with verified work emails. Madrid is the largest hub.

This list covers residential solar designers 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

307Companies

1,991Contacts tracked

190Verified emails

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The 25 largest residential solar designers based in Spain

Ranked by team size

Top 25 of 307 residential solar designers 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 solar designers: 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	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
2	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
3	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
4	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
5	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
6	1komma5 ES	Indirect evidence	Cerdanyola Del Vallès, SpainHQ checked Sep 17, 2026	51-200	39 contacts →
	Indirect evidence “Nuestra visión es hacer que todos podamos vivir de las energías renovables para siempre y gratis.” Source: RevenueBase Database · checked Sep 17, 2026
7	Solartradex	Partial evidence	Mataró, SpainHQ checked Sep 17, 2026	51-200	38 contacts →
	Partial evidence “Ingeniería e instaladora de energía solar fotovoltaica.” Source: RevenueBase Database · checked Sep 17, 2026
8	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
9	Quetzal Ingeniería	Indirect evidence	Alicante, SpainHQ checked Sep 17, 2026	1-10	24 contacts →
	Indirect evidence “Tenemos un método, lo hemos conseguido, proyectamos y legalizamos cualquier instalación fotovoltaica de una manera eficaz y rápida.” Source: RevenueBase Database · checked Sep 17, 2026
10	Pavener	Indirect evidence	Quart De Poblet, SpainHQ checked Sep 17, 2026	11-50	20 contacts →
	Indirect evidence “Pavener, servicios energéticos, somos especialistas en energía, incorporamos ingeniería, instalación, y mantenimiento.” Source: RevenueBase Database · checked Sep 17, 2026
11	Wikitel Asesores	Partial evidence	Sevilla, SpainHQ checked Sep 17, 2026	11-50	17 contacts →
	Partial evidence “Servicios de consultoría energética e instalación de Placas Solares para particulares y empresas.” Source: RevenueBase Database · checked Sep 17, 2026
12	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
13	Soluxions	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “Nuestra visión no es solo la de una economía sostenible, sino también la de la propia empresa que busca ser más competitiva.” Source: RevenueBase Database · checked Sep 17, 2026
14	Soportes Solares S.L	Indirect evidence	San Isidro, SpainHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “nace en la década de los 90 para cubrir una necesidad en el emergente mercado de la producción fotovoltaica, la de proveer a los profesionales en el sector de estructuras acordes…” Source: RevenueBase Database · checked Sep 17, 2026
15	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
16	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
17	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
18	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
19	Fotovol Solar	Indirect evidence	Girona, SpainHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “Fotovol som una empresa d’enginyeria i instal·lació de sistemes de generació d’energia fotovoltaica dedicada a la projecció i execució d’instal·lacions sobre cobertes, sòl i…” Source: RevenueBase Database · checked Sep 17, 2026
20	Praxia PV Mounting Systems	Indirect evidence	Oviedo, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “below] Fixed Photovoltaic Structures.” Source: RevenueBase Database · checked Sep 17, 2026
21	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
22	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
23	Solarea Tech	Partial evidence	Alicante, SpainHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Somos una empresa de ingeniería especializa en la energía solar.” Source: RevenueBase Database · checked Sep 17, 2026
24	Efecte Fotovoltaic	Partial evidence	Cardedeu, SpainHQ checked Sep 17, 2026	1-10	5 contacts →
	Partial evidence “Efecte fotovoltaic s’ha procurat la màxima experiència professional amb persones provinents del sector de l’energia solar fotovoltaica, oferint així una expertesa contrastada de…” Source: RevenueBase Database · checked Sep 17, 2026
25	Nucli Solar	Partial evidence	Celrà, SpainHQ checked Sep 17, 2026	11-50	4 contacts →
	Partial evidence “A Nucli Solar compartim la preocupació cap el medi ambient i la situació de pobresa energètica que es pateix arreu del territori.” 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 solar designers. 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 solar designers.
Partial evidence: Its own public description names part of residential solar designers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name residential solar designers. 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 307 residential solar designers based in Spain

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Residential solar designers based in Spain at a glance

As of Sep 17, 2026

9.5%Verified-email coverage

6.5Average contacts per company

1-10Median size (employees)

11.7%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

172

11-50

107

51-200

201-500

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 307 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 solar designers, 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 solar designers”. 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 solar designers), 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 solar designers, 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, 190 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 solar designers by metro

Residential solar designers in Madrid36

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 solar designers, 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 solar designers are there based in Spain?

RevenueBase identified 307 residential solar designers 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?

ESR Energy Solutions, headquartered in Sant Boi De Llobregat, tops this list with the largest team on record.

Which city has the most residential solar designers?

Madrid leads with 36 headquartered companies, followed by Barcelona (18) and Valencia (9).

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 190 verified decision-maker contacts tracked across these 307 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.