Company lists · Data refreshed September 2026

Top 22 Energy infrastructure developers based in Spain

Name: Energy infrastructure developers based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 370 companies tracked

RevenueBase identified 370 energy infrastructure developers headquartered in Spain as of September 2026 and tracks 30,244 professional contacts across them, including 4,582 with verified work emails. Madrid is the largest hub.

This list covers energy infrastructure developers 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 16, 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 16, 2026 86% judged on-target in blind review

370Companies

30,244Contacts tracked

4,582Verified emails

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The 22 largest energy infrastructure developers based in Spain

Ranked by team size

Top 22 of 370 energy infrastructure developers based in Spain, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy infrastructure developers: 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	Tecnicas Reunidas	Indirect evidence	Madrid, SpainHQ checked Sep 16, 2026	10001+	10,588 contacts →
	Indirect evidence “TR is an international general contractor engaged in the engineering and construction of industrial facilities in the fields of-Oil & Gas -Refining & Petrochemical -Power…” Source: RevenueBase Database · checked Sep 16, 2026
2	Isolux Corsan	Strong evidence	Madrid, SpainHQ checked Sep 16, 2026	5,001-10,000	1,649 contacts →
	Strong evidence “Isolux is a global benchmark in energy, water and environmental, road and railways infrastructure with presence in more than 35 countries on four continents.” Source: RevenueBase Database · checked Sep 16, 2026
3	Dragados Offshore	Indirect evidence	11510 Puerto Real, SpainHQ checked Sep 16, 2026	1,001-5,000	1,348 contacts →
	Indirect evidence “Founded in 1972, Dragados Offshore S.A.” Source: RevenueBase Database · checked Sep 16, 2026
4	Zelestra	Indirect evidence	SpainHQ checked Sep 16, 2026	501-1,000	929 contacts →
	Indirect evidence “At Zelestra, we are on a mission to change the world by making decarbonization a reality for our partners.” Source: RevenueBase Database · checked Sep 16, 2026
5	Grupotec	Partial evidence	Valencia, SpainHQ checked Sep 16, 2026	501-1,000	538 contacts →
	Partial evidence “GRUPOTEC - Empresa multidisciplinar de ingeniería y arquitectura y líder en el sector de la energía fotovoltaica.” Source: RevenueBase Database · checked Sep 16, 2026
6	IGNIS	Partial evidence	Madrid, SpainHQ checked Sep 16, 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 16, 2026
7	Grupo Lantania	Partial evidence	Madrid, SpainHQ checked Sep 16, 2026	1,001-5,000	475 contacts →
	Partial evidence “En Lantania hacemos realidad grandes infraestructuras de transporte, agua y energía con el entusiasmo de una empresa joven y la solidez que nos aporta la experiencia.” Source: RevenueBase Database · checked Sep 16, 2026
8	Tetrace	Indirect evidence	Pamplona, SpainHQ checked Sep 16, 2026	501-1,000	441 contacts →
	Indirect evidence “TETRACE es un Grupo Empresarial dedicado a ingeniería, construcción y mantenimiento de activos renovables, constituido en 2010.” Source: RevenueBase Database · checked Sep 16, 2026
9	Isastur	Indirect evidence	Llanera, SpainHQ checked Sep 16, 2026	1,001-5,000	371 contacts →
	Indirect evidence “El holding ISASTUR está integrado por un conjunto de empresas con distintas actividades que por su tradición y experiencia están fundamentalmente vinculadas con el sector de la…” Source: RevenueBase Database · checked Sep 16, 2026
10	ELMYA	Partial evidence	Sevilla, SpainHQ checked Sep 16, 2026	501-1,000	351 contacts →
	Partial evidence “ELMYA is engaged in the renewable energy and electrical installations sector.” Source: RevenueBase Database · checked Sep 16, 2026
11	Lanco Infratech Limited	Partial evidence	Madrid, SpainHQ checked Sep 16, 2026	1,001-5,000	314 contacts →
	Partial 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 16, 2026
12	ACISA	Indirect evidence	Madrid, SpainHQ checked Sep 16, 2026	201-500	232 contacts →
	Indirect evidence “Elevate your expectations with ACISA, a proud member of the prestigious Aldesa Group, Spain's construction titan.” Source: RevenueBase Database · checked Sep 16, 2026
13	Opdenergy	Indirect evidence	Madrid, SpainHQ checked Sep 16, 2026	201-500	230 contacts →
	Indirect evidence “Opdenergy is an Independent Power Producer (IPP) with more than 20 years of experience, operating in Europe, the United States, and Latin America.” Source: RevenueBase Database · checked Sep 16, 2026
14	TCI Gecomp	Partial evidence	Almería, SpainHQ checked Sep 16, 2026	501-1,000	216 contacts →
	Partial evidence “TCI GECOMP es una empresa de Ingeniería y Construcción especializada en Energías renovables e Hidrógeno Verde con presencia en España, Perú, Chile y Argentina.” Source: RevenueBase Database · checked Sep 16, 2026
15	Enerside Energy	Partial evidence	Barcelona, SpainHQ checked Sep 16, 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 16, 2026
16	Redexis	Partial evidence	Madrid, SpainHQ checked Sep 16, 2026	201-500	205 contacts →
	Partial evidence “Grupo Redexis es un conjunto de sociedades de infraestructuras comprometidas con la transición energética, el desarrollo de los gases renovables y el crecimiento sostenible…” Source: RevenueBase Database · checked Sep 16, 2026
17	Capital Energy	Partial evidence	Pozuelo De Alarcón, SpainHQ checked Sep 16, 2026	201-500	203 contacts →
	Partial evidence “Somos una compañía española con más de 20 años en el sector energético.” Source: RevenueBase Database · checked Sep 16, 2026
18	Exus Renewables	Partial evidence	Madrid, SpainHQ checked Sep 16, 2026	51-200	193 contacts →
	Partial evidence “Exus Renewables Europe is an Energy Solutions Provider active across the full energy value chain, from development and construction to ownership, operations, and third-party asset…” Source: RevenueBase Database · checked Sep 16, 2026
19	Elawan Energy	Partial evidence	Madrid, SpainHQ checked Sep 16, 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 16, 2026
20	Greening	Partial evidence	Granada, SpainHQ checked Sep 16, 2026	501-1,000	175 contacts →
	Partial 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 16, 2026
21	Initec Energía	Partial evidence	Madrid, SpainHQ checked Sep 16, 2026	201-500	168 contacts →
	Partial evidence “INITEC Energía focuses its activity on the construction of electricity generation facilities.” Source: RevenueBase Database · checked Sep 16, 2026
22	Cansol Energy Solutions	Partial evidence	Granada, SpainHQ checked Sep 16, 2026	51-200	151 contacts →
	Partial evidence “CANSOL ENERGY SOLUTIONS, construyendo un futuro sostenible.” Source: RevenueBase Database · checked Sep 16, 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: energy infrastructure developers. 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 energy infrastructure developers.
Partial evidence: Its own public description names part of energy infrastructure developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy infrastructure developers. 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 22 of 370 energy infrastructure developers based in Spain

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Energy infrastructure developers based in Spain at a glance

As of Sep 16, 2026

15.2%Verified-email coverage

81.7Average contacts per company

11-50Median size (employees)

23.5%Largest-city concentration · Madrid

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

114

11-50

142

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 370 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 energy infrastructure developers, 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 “energy infrastructure developers”. 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 energy infrastructure developers), 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 energy infrastructure developers, 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, 4,582 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 16, 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.

Energy infrastructure developers by metro

Energy infrastructure developers in Madrid87

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 energy infrastructure developers, 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 energy infrastructure developers are there based in Spain?

RevenueBase identified 370 energy infrastructure developers 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?

Tecnicas Reunidas, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most energy infrastructure developers?

Madrid leads with 87 headquartered companies, followed by Sevilla (19) and Barcelona (17).

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 4,582 verified decision-maker contacts tracked across these 370 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 16, 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.