Company lists · Data refreshed September 2026

Top 25 Utility infrastructure companies based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 94 companies tracked

RevenueBase identified 94 utility infrastructure companies headquartered in Spain as of September 2026 and tracks 5,025 professional contacts across them, including 273 with verified work emails. Madrid is the largest hub.

This list covers utility infrastructure 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 22, 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 22, 2026 86% judged on-target in blind review

94Companies

5,025Contacts tracked

273Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest utility infrastructure companies based in Spain

Ranked by team size

Top 25 of 94 utility infrastructure companies based in Spain, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to utility infrastructure 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	Isolux Corsan	Partial evidence	Madrid, SpainHQ checked Sep 22, 2026	5,001-10,000	1,649 contacts →
	Partial 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 22, 2026
2	Grupo Lantania	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	1,001-5,000	475 contacts →
	Indirect 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 22, 2026
3	Facsa. Ciclo Integral DEL Agua	Indirect evidence	Castellón De La Plana, SpainHQ checked Sep 22, 2026	1,001-5,000	305 contacts →
	Indirect evidence “Facsa, empresa ‘origen’ de Nealis, es una referencia en el territorio nacional en la gestión global de los recursos hídricos.” Source: RevenueBase Database · checked Sep 22, 2026
4	Gestión Y Técnicas DEL Agua S.A. Gestagua	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	201-500	143 contacts →
	Indirect evidence “En Gestagua, filial española del grupo Saur, los Municipios encuentran no sólo un operador eficiente para todas las fases del Ciclo del Agua, sino un socio activo para la gestión…” Source: RevenueBase Database · checked Sep 22, 2026
5	Acsa Obras E Infraestructuras, S.A	Indirect evidence	Barcelona, SpainHQ checked Sep 22, 2026	1,001-5,000	97 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
6	Emurtel	Indirect evidence	El Palmar (murcia), SpainHQ checked Sep 22, 2026	51-200	92 contacts →
	Indirect evidence “Emurtel es una compañía líder de ingeniería y consultoría multidisciplinar orientada a la gestión integral de proyectos, ofreciendo soluciones de valor añadido en el diseño…” Source: RevenueBase Database · checked Sep 22, 2026
7	Aguas DE Alicante	Indirect evidence	Alicante, SpainHQ checked Sep 22, 2026	201-500	85 contacts →
	Indirect evidence “Aguas Municipalizadas de Alicante, Empresa Mixta (Aguas de Alicante), cuya sede social está ubicada en la calle Alona 31 de Alicante (España), está participada en un 50 % por el…” Source: RevenueBase Database · checked Sep 22, 2026
8	Geocontrol S.A	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	78 contacts →
	Indirect evidence “GEOCONTROL es una ingeniería fundada en 1982 especializada en obra civil e instalaciones de seguridad de Obras Subterráneas que ofrece soluciones técnicas avanzadas a través de su…” Source: RevenueBase Database · checked Sep 22, 2026
9	Aguas DE Córdoba	Indirect evidence	Córdoba, SpainHQ checked Sep 22, 2026	201-500	47 contacts →
	Indirect evidence “Aguas de Córdoba es la nueva imagen comercial con la que la Diputación de Córdoba, a través de su empresa gestora EMPROACSA con 25 años de experiencia, sigue avanzando en la tarea…” Source: RevenueBase Database · checked Sep 22, 2026
10	GAROC	Indirect evidence	Ciudad Real, SpainHQ checked Sep 22, 2026	201-500	35 contacts →
	Indirect evidence “GAROC (GRUPO DE ARQUITECTURA Y OBRA CIVIL), nace en mayo de 2003 en Ciudad Real donde tiene su sede Social.” Source: RevenueBase Database · checked Sep 22, 2026
11	Aigües DE Mataró SA	Indirect evidence	Mataro, SpainHQ checked Sep 22, 2026	51-200	28 contacts →
	Indirect evidence “Aigües de Mataró, SA (AMSA) és una societat municipal amb domicili al carrer Pitàgores, 1-7 de Mataró propietat de l’Ajuntament de Mataró, que s’encarrega de la gestió integral de…” Source: RevenueBase Database · checked Sep 22, 2026
12	Telecso	Indirect evidence	Castellon, SpainHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “TELECSO es una compañía especializada en la prestación de servicios técnicos y tecnológicos, que desarrolla las actividades de construcción, suministro, instalación y montaje…” Source: RevenueBase Database · checked Sep 22, 2026
13	Ogisa Infraestructuras S.A	Indirect evidence	Zaragoza, SpainHQ checked Sep 22, 2026	51-200	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
14	Citracc Rail	Indirect evidence	Coslada, SpainHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “Somos una compañía especializada en ingeniería, fabricación, instalación y mantenimiento de infraestructuras críticas para los sectores ferroviario y energético.” Source: RevenueBase Database · checked Sep 22, 2026
15	Gen. Grupo Energético DE Puerto Real S.A	Indirect evidence	Puerto Real, SpainHQ checked Sep 22, 2026	51-200	17 contacts →
	Indirect evidence “Grupo Energético de Puerto Real, SA (GEN) es una sociedad de capital íntegramente municipal y medio propio del Ayuntamiento de Puerto Real responsable de los principales servicios…” Source: RevenueBase Database · checked Sep 22, 2026
16	Comoli, S.L	Indirect evidence	Málaga, SpainHQ checked Sep 22, 2026	11-50	17 contacts →
	Indirect evidence “Empresa constructora en Málaga con más de 40 años de experiencia en la realización de proyectos.” Source: RevenueBase Database · checked Sep 22, 2026
17	Alonso LUZ Y GAS	Indirect evidence	Sariñena, SpainHQ checked Sep 22, 2026	51-200	14 contacts →
	Indirect evidence “Alonso Luz y Gas, especialistas en instalaciones de gas en pisos, casas y edificios.” Source: RevenueBase Database · checked Sep 22, 2026
18	Proyelec	Indirect evidence	Ciudad Real, SpainHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Esta empresa nace a principios de los años 80, con carácter unipersonal, dedicada al montaje de instalaciones eléctricas, públicas y privadas, principalmente de media y baja…” Source: RevenueBase Database · checked Sep 22, 2026
19	Ipejma Servicios Electricos SL	Indirect evidence	Las Torres De Cotillas, SpainHQ checked Sep 22, 2026	51-200	13 contacts →
	Indirect evidence “IPEJMA SERVICIOS ELECTRICOS SL is a construction company based out of Carril Los Matias n8, La Loma - Las Torres de Cotillas Murcia, Spain.” Source: RevenueBase Database · checked Sep 22, 2026
20	Segade Saelco SA	Indirect evidence	Ourense, SpainHQ checked Sep 22, 2026	51-200	11 contacts →
	Indirect evidence “Somos una empresa con más de 40 años de experiencia en la construcción de Líneas Eléctricas Aéreas y Subterráneas de Alta Tensión, en constante crecimiento y desarrollo.” Source: RevenueBase Database · checked Sep 22, 2026
21	Prodaisa	Indirect evidence	Girona, SpainHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “Proveïments d’Aigua SA, Prodaisa, neix l’any 1990 per gestionar el cicle integral de l’aigua a petites poblacions de les comarques de Girona.” Source: RevenueBase Database · checked Sep 22, 2026
22	Soltec Integral Solutions SL	Partial evidence	Zaragoza, SpainHQ checked Sep 22, 2026	11-50	10 contacts →
	Partial evidence “SOLTEC INTEGRAL SOLUTIONS SL is an utilities company based out of PASEO DE LA INDEPENDENCIA, 19, ZARAGOZA, Spain.” Source: RevenueBase Database · checked Sep 22, 2026
23	I-Mbt Ingenieria E Instalaciones	Indirect evidence	Madrid, SpainHQ checked Sep 22, 2026	11-50	9 contacts →
	Indirect evidence “i-MBT” es una empresa de servicios de ingeniería enfocada a las redes de distribución de energía de media y baja tensión, que además cuenta con personal para la ejecución de…” Source: RevenueBase Database · checked Sep 22, 2026
24	Esasur Energía	Indirect evidence	Sevilla, SpainHQ checked Sep 22, 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 22, 2026
25	Inypsa Infrastructures	Partial evidence	Madrid, SpainHQ checked Sep 22, 2026	51-200	6 contacts →
	Partial evidence “Founded in 1970 and with a team of over 180 professionals, INYPSA is constantly searching for and implementing best practices to provide infrastructures and public services in the…” Source: RevenueBase Database · checked Sep 22, 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: utility infrastructure 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 utility infrastructure companies.
Partial evidence: Its own public description names part of utility infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility infrastructure 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 94 utility infrastructure companies based in Spain

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 273 reachable decision-makers.

Free signup · no credit card

View the full list →

Utility infrastructure companies based in Spain at a glance

As of Sep 22, 2026

5.4%Verified-email coverage

53.5Average contacts per company

11-50Median size (employees)

16.0%Largest-city concentration · Madrid

Sep 22, 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

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 94 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 utility infrastructure 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 “utility infrastructure 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 utility infrastructure 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 utility infrastructure 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, 273 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 22, 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 utility infrastructure 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 utility infrastructure companies are there based in Spain?

RevenueBase identified 94 utility infrastructure 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?

Isolux Corsan, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most utility infrastructure companies?

Madrid leads with 15 headquartered companies, followed by Barcelona (7) and Zaragoza (5).

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 273 verified decision-maker contacts tracked across these 94 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 22, 2026.

Ready to reach these companies? Verified emails and direct dials for all 94 utility infrastructure companies based in Spain. Start with a free account, no credit card.

Download this list →

Related lists

Utility infrastructure companies by geography

Browse the directory

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.