Company lists · Data refreshed September 2026

Top 25 Power generation facilities based in Spain

Name: Power generation facilities based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 111 companies tracked

RevenueBase identified 111 power generation facilities headquartered in Spain as of September 2026 and tracks 20,258 professional contacts across them, including 1,202 with verified work emails. Madrid is the largest hub.

This list covers power generation facilities 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 20, 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 20, 2026 86% judged on-target in blind review

111Companies

20,258Contacts tracked

1,202Verified emails

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The 25 largest power generation facilities based in Spain

Ranked by team size

Top 25 of 111 power generation facilities based in Spain, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to power generation facilities: 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	Iberdrola	Partial evidence	Bilbao, SpainHQ checked Sep 20, 2026	10001+	7,598 contacts →
	Partial evidence “With more than 180 years of history, Iberdrola is today a global energy leader, the leading wind power producer and one of the largest electricity companies in the world in terms…” Source: RevenueBase Database · checked Sep 20, 2026
2	GAS Natural Fenosa	Partial evidence	Barcelona, SpainHQ checked Sep 20, 2026	10001+	3,951 contacts →
	Partial evidence “Gas Natural Fenosa is a leading multi-national in the gas and power sectors.” Source: RevenueBase Database · checked Sep 20, 2026
3	Lanco Infratech Limited	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	1,001-5,000	314 contacts →
	Indirect evidence “LANCO INFRATECH LIMITED is an oil and energy company based out of Calle Laguna del Marquesado Nª 19, Nave 16 Edificio Adriana 1ª Planta, Polígono Industrial La Resina…” Source: RevenueBase Database · checked Sep 20, 2026
4	Nexus Energía	Indirect evidence	Barcelona, SpainHQ checked Sep 20, 2026	201-500	202 contacts →
	Indirect evidence “Nexus Energía es una empresa energética cuyo buque insignia es la comercialización de electricidad y gas natural.” Source: RevenueBase Database · checked Sep 20, 2026
5	Tradivel	Indirect evidence	Alcorcón, SpainHQ checked Sep 20, 2026	501-1,000	166 contacts →
	Indirect evidence “En Tradivel llevamos más de 20 años ofreciendo una amplia gama de servicios energéticos poniendo foco en la calidad del servicio y la satisfacción de nuestros clientes.” Source: RevenueBase Database · checked Sep 20, 2026
6	Grupo Neoelectra	Indirect evidence	Sant Just Desvern, SpainHQ checked Sep 20, 2026	201-500	92 contacts →
	Indirect evidence “Neoelectra es un grupo empresarial especializado en aportar soluciones energéticas eficientes a la industria.” Source: RevenueBase Database · checked Sep 20, 2026
7	Enso Energy Environment & Sustainability	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	51-200	72 contacts →
	Indirect evidence “ENSO Energy Environment and Sustainability se dedica al desarrollo, promoción, construcción y operación de plantas de generación eléctrica y térmica.” Source: RevenueBase Database · checked Sep 20, 2026
8	Planea Energía	Indirect evidence	Albacete, SpainHQ checked Sep 20, 2026	51-200	51 contacts →
	Indirect evidence “Somos comercializadora y generadores de energía renovable, ofrecemos propuestas claras, trato directo y servicio a tu medida, sin rodeos ni letra pequeña.” Source: RevenueBase Database · checked Sep 20, 2026
9	Integra Energía	Indirect evidence	Oviedo, SpainHQ checked Sep 20, 2026	51-200	49 contacts →
	Indirect evidence “Somos una comercializadora de energía eléctrica, gas y autoconsumo.” Source: RevenueBase Database · checked Sep 20, 2026
10	Iner Energía	Indirect evidence	Albacete, SpainHQ checked Sep 20, 2026	51-200	41 contacts →
	Indirect evidence “Iner, la energía con personalidad propia.” Source: RevenueBase Database · checked Sep 20, 2026
11	CYE Energía	Indirect evidence	Valencia, SpainHQ checked Sep 20, 2026	n/a	31 contacts →
	Indirect evidence “Proveedor de energía eléctrica que nace de un grupo de empresas del sector de las energías renovables, por ello, manteniendo siempre el principio de generación eléctrica…” Source: RevenueBase Database · checked Sep 20, 2026
12	Cogen Energía España	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 20, 2026	51-200	25 contacts →
	Indirect evidence “En COGEN nace con el objetivo de desarrollar y explotar proyectos de cogeneración y con el compromiso de ayudar a la industria a reducir sus costes energéticos, así como a mejorar…” Source: RevenueBase Database · checked Sep 20, 2026
13	Ascia Renovables S.L	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
14	Icoenergia Soluciones Energeticas SA	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “ICOENERGIA SOLUCIONES ENERGETICAS SA es una compañía con mas de 18 años de trayectoria profesional acreditada por la satisfacción de los Clientes que consideramos "Socios" por el…” Source: RevenueBase Database · checked Sep 20, 2026
15	Krilinex Power Solutions	Partial evidence	Bilbao, SpainHQ checked Sep 20, 2026	11-50	17 contacts →
	Partial evidence “You are Power.” Source: RevenueBase Database · checked Sep 20, 2026
16	REINS	Indirect evidence	Valencia, SpainHQ checked Sep 20, 2026	51-200	17 contacts →
	Indirect evidence “Nuestros principales clientes son empresas transportistas y distribuidoras de gas natural y electricidad, para las que se está trabajando a nivel internacional, y colaborando en…” Source: RevenueBase Database · checked Sep 20, 2026
17	PEUSA	Indirect evidence	La Seu D'urgell (lleida), SpainHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “PEUSA és una empresa elèctrica que produeix, distribueix i comercialitza energia.” Source: RevenueBase Database · checked Sep 20, 2026
18	Genelek	Indirect evidence	Zumaia, SpainHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Especializados en el área de generación de la energía: grupos de emergencia, plantas de cogeneración/trigeneración, centrales hidráulicas y de biomasa, district-heating.” Source: RevenueBase Database · checked Sep 20, 2026
19	Avangreen Energy Solutions, SA	Indirect evidence	San Agustín De Guadalix, SpainHQ checked Sep 20, 2026	51-200	13 contacts →
	Indirect evidence “Energy Management Energy plants Construction, Operation and Maintenance (renewable and conventional) Energy Efficiency Based in Spain, operates in Europe, Africa, America and…” Source: RevenueBase Database · checked Sep 20, 2026
20	Casa Márquez S.A	Indirect evidence	Sevilla, SpainHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Casa Márquez es una empresa sevillana cuyo origen se remonta a 1932, año en que se crea el nombre comercial de Casa Márquez, dedicada desde sus inicios a las instalaciones…” Source: RevenueBase Database · checked Sep 20, 2026
21	Aseprel	Indirect evidence	Murcia, SpainHQ checked Sep 20, 2026	11-50	12 contacts →
	Indirect evidence “Aseprel desarrolla su actividad en el campo de la gestión informatizada y el control de la energía eléctrica desde hace más de 25 años.” Source: RevenueBase Database · checked Sep 20, 2026
22	Solcam Energia	Indirect evidence	Riudoms, SpainHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Impulsamos la transición energética del sector industrial con soluciones integrales y de gran escala.” Source: RevenueBase Database · checked Sep 20, 2026
23	Soltec Integral Solutions SL	Indirect evidence	Zaragoza, SpainHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “SOLTEC INTEGRAL SOLUTIONS SL is an utilities company based out of PASEO DE LA INDEPENDENCIA, 19, ZARAGOZA, Spain.” Source: RevenueBase Database · checked Sep 20, 2026
24	Bahia DE Bizkaia Electricidad S.L	Indirect evidence	Zierbena, SpainHQ checked Sep 20, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
25	Esasur Energía	Indirect evidence	Sevilla, SpainHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “ESASUR fue creada como empresa del Grupo VISASUR, con la idea de concentrar y potenciar la actividad del mismo en el área de ingeniería e instalaciones, prestando servicios…” Source: RevenueBase Database · checked Sep 20, 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: power generation facilities. 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 power generation facilities.
Partial evidence: Its own public description names part of power generation facilities, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name power generation facilities. 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 111 power generation facilities based in Spain

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Power generation facilities based in Spain at a glance

As of Sep 20, 2026

5.9%Verified-email coverage

182.5Average contacts per company

11-50Median size (employees)

20.7%Largest-city concentration · Madrid

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

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 111 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 power generation facilities, 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 “power generation facilities”. 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 power generation facilities), 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 power generation facilities, 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, 1,202 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 20, 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.

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 power generation facilities, 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 power generation facilities are there based in Spain?

RevenueBase identified 111 power generation facilities 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?

Iberdrola, headquartered in Bilbao, tops this list with the largest team on record.

Which city has the most power generation facilities?

Madrid leads with 23 headquartered companies, followed by Granada (5) and Barcelona (4).

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 1,202 verified decision-maker contacts tracked across these 111 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 20, 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.