Company lists · Data refreshed September 2026

Top 25 Utility contractors based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 167 companies tracked

RevenueBase identified 167 utility contractors headquartered in Spain as of September 2026 and tracks 2,932 professional contacts across them, including 147 with verified work emails. Barcelona is the largest hub.

This list covers utility contractors 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 19, 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 19, 2026 86% judged on-target in blind review

167Companies

2,932Contacts tracked

147Verified emails

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The 25 largest utility contractors based in Spain

Ranked by team size

Top 25 of 167 utility contractors based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to utility contractors: 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	Grupo Lantania	Indirect evidence	Madrid, SpainHQ checked Sep 19, 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 19, 2026
2	Aguas DE Alicante	Indirect evidence	Alicante, SpainHQ checked Sep 19, 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 19, 2026
3	Swap Energia S.A	Indirect evidence	Donostia-san Sebastian, SpainHQ checked Sep 19, 2026	201-500	66 contacts →
	Indirect evidence “SWAP ENERGIA, Somos la compañía eléctrica de los profesionales.” Source: RevenueBase Database · checked Sep 19, 2026
4	Polaroo	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “We save tons of hours and money in the management of recurrent expenses like electricity, gas, water, telephone, Internet, insurance, alarms and others for companies, and we seek…” Source: RevenueBase Database · checked Sep 19, 2026
5	OPS Infraestructuras Y Servicios Hidraulicos SL	Indirect evidence	Humanes De Madrid, SpainHQ checked Sep 19, 2026	51-200	25 contacts →
	Indirect evidence “OPS INFRAESTRUCTURAS Y SERVICIOS HIDRAULICOS SL is a construction company based out of CALLE DALIA, 4, MADRID, Madrid, Spain.” Source: RevenueBase Database · checked Sep 19, 2026
6	Ogisa Infraestructuras S.A	Indirect evidence	Zaragoza, SpainHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
7	Gilabert Miró S.A	Indirect evidence	Reus, SpainHQ checked Sep 19, 2026	51-200	19 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
8	Comoli, S.L	Indirect evidence	Málaga, SpainHQ checked Sep 19, 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 19, 2026
9	Proyectos Y Mantenimientos DE Instrumentacion Y Electricidad S.A	Indirect evidence	Puertollano, SpainHQ checked Sep 19, 2026	501-1,000	16 contacts →
	Indirect evidence “MEISA (nombre comercial de PROYECTOS Y MANTENIMIENTOS DE INSTRUMENTACION Y ELECTRICIDAD S.A) es una empresa de servicios cuya actividad principal se centra en el montaje y…” Source: RevenueBase Database · checked Sep 19, 2026
10	Alonso LUZ Y GAS	Indirect evidence	Sariñena, SpainHQ checked Sep 19, 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 19, 2026
11	Proyelec	Indirect evidence	Ciudad Real, SpainHQ checked Sep 19, 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 19, 2026
12	Segade Saelco SA	Indirect evidence	Ourense, SpainHQ checked Sep 19, 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 19, 2026
13	Villa Flores Martín	Indirect evidence	Carmona, SpainHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “Para conocer los orígenes de Villa Flores Martín debemos remontarnos al año 1981: cuando tres profesionales con larga experiencia en el montaje eléctrico se unieron para crear la…” Source: RevenueBase Database · checked Sep 19, 2026
14	Soltec Integral Solutions SL	Partial evidence	Zaragoza, SpainHQ checked Sep 19, 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 19, 2026
15	Fisersa	Indirect evidence	Figueres, SpainHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
16	Enerpime	Indirect evidence	Mataró, SpainHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “En Projectes Instal·lacions i Manteniments Energètics, S.L.” Source: RevenueBase Database · checked Sep 19, 2026
17	Doica Gestión S.L	Indirect evidence	Barbera Del Vallés, SpainHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “Operamos en instalaciones grandes y medianas de alta tensión, centros de transformación, medida y protección; naves industriales, edificios, locales u otras instalaciones de baja…” Source: RevenueBase Database · checked Sep 19, 2026
18	ARCON	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Arcon, empresa con una larga experiencia en la Gestión, Seguimiento y Coordinación del proceso que culmina con la contratación y puesta en marcha de los suministros de agua…” Source: RevenueBase Database · checked Sep 19, 2026
19	Munar Fullana	Indirect evidence	Palma De Mallorca, SpainHQ checked Sep 19, 2026	51-200	4 contacts →
	Indirect evidence “80 años de experiencia en desatasco de tuberías, limpiezas industriales y gestión de residuos.” Source: RevenueBase Database · checked Sep 19, 2026
20	Contratas Y Servicios Cosersa SA	Indirect evidence	Arganda Del Rey, SpainHQ checked Sep 19, 2026	11-50	4 contacts →
	Indirect evidence “CONTRATAS Y SERVICIOS COSERSA SA es una empresa especializada en todo tipo de trabajos en la Red de saneamiento (desatrancos, limpiezas, inspección con cámara de CCTV…” Source: RevenueBase Database · checked Sep 19, 2026
21	Sermanred S.L	Indirect evidence	Coslada, SpainHQ checked Sep 19, 2026	11-50	3 contacts →
	Indirect evidence “Sermanred fue constituida en el año 2003 desarrollando su actividad en el sector servicios y construcción logrando en sus últimos años un gran abanico de especialidades como-…” Source: RevenueBase Database · checked Sep 19, 2026
22	Joan Romeu, S.L	Indirect evidence	Sant Pere De Riudebitlles, SpainHQ checked Sep 19, 2026	11-50	3 contacts →
	Indirect evidence “Joan Romeu S.L.” Source: RevenueBase Database · checked Sep 19, 2026
23	Serlial S.L	Indirect evidence	Alcobendas, SpainHQ checked Sep 19, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
24	MP Construcciones Y Montajes SL	Indirect evidence	Vilanova I La Geltru, SpainHQ checked Sep 19, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Geselectric Martia, S.L	Indirect evidence	Marchena, SpainHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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 contractors. 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 contractors.
Partial evidence: Its own public description names part of utility contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility contractors. 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 167 utility contractors based in Spain

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Utility contractors based in Spain at a glance

As of Sep 19, 2026

5.0%Verified-email coverage

17.6Average contacts per company

11-50Median size (employees)

9.0%Largest-city concentration · Barcelona

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 167 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 contractors, 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 contractors”. 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 contractors), 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 contractors, 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, 147 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 19, 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 contractors, 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 contractors are there based in Spain?

RevenueBase identified 167 utility contractors 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?

Grupo Lantania, headquartered in Madrid, tops this list with the largest team on record.

Which city has the most utility contractors?

Barcelona leads with 15 headquartered companies, followed by Madrid (13) and Malaga (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 147 verified decision-maker contacts tracked across these 167 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 19, 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.