Company lists · Data refreshed November 2026

Top 25 Utility contractors and suppliers based in Spain

RevenueBase identified 175 company matches for utility contractors and suppliers associated with Spain as of November 2026 and tracks 5,299 professional contacts across them, including 469 with verified work emails. Madrid is the largest hub.

This list covers company matches for utility contractors and suppliers associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
175Companies
5,299Contacts tracked
469Verified emails
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The 25 largest utility contractors and suppliers based in Spain

Ranked by team size
Top 25 of 175 company matches for utility contractors and suppliers based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMadrid, SpainHQ recorded Nov 6, 20261,001-5,000863 contacts →

Exact match

“Created in 1919, SEMI is a leading company in the electricity and industrial sector.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Nov 6, 20261,001-5,000528 contacts →

Exact match

“MASA interviene en toda la cadena de actividades en la vida de las instalaciones e infraestructuras, desde su fase de proyecto, hasta la construcción y montaje de la instalación…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchMadrid, SpainHQ recorded Nov 6, 20261,001-5,000254 contacts →

Exact match

“With an international focus, since its inception, The Elsamex group (Grupo Elsamex) has developed its business in Spain, Latin America and Portugal.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchAlcorcón, SpainHQ recorded Nov 6, 2026501-1,000199 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMadrid, SpainHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“Grupo Maipú nace en España en 1995.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBilbao, SpainHQ recorded Nov 6, 202651-20098 contacts →

Exact match

“SITER INGENIERÍA DE INFRAESTRUCTURAS es una compañía con más de 25 años de historia, que opera dando soporte a operadores y empresas relacionadas con el desarrollo de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchEl Palmar (murcia), SpainHQ recorded Nov 6, 202651-20096 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAviles, SpainHQ recorded Nov 6, 202651-20095 contacts →

Exact match

“Electroinnova instalaciones y mantenimientos S.L es una empresa asturiana con una clara voación de expansión internacional que nace con el objetivo de ofrecer y solucionar…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchPaterna, SpainHQ recorded Nov 6, 202651-20079 contacts →

Exact match

“GENERA Q es una empresa especializada en el diseño, ejecución y mantenimiento de instalaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBarcelona, SpainHQ recorded Nov 6, 2026201-50075 contacts →

Exact match

“LYMET, con más de 30 años de existencia, es la sociedad de cabecera de un grupo de empresas, formado actualmente por la propia LYMET, por LYMET Energía, LYMET Obra Civil, LYMET…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchGranada, SpainHQ recorded Nov 6, 202651-20064 contacts →

Exact match

“GRULOP es una constructora de ámbito nacional especializada en ejecutar proyectos de obra civil, infraestructuras y edificación de alta complejidad, transformando cada reto…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSiero, SpainHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Somos distribuidores de los principales fabricantes nacionales y extranjeros de productos para obra civil, con la oferta más amplia de tuberías, accesorios, registros, arquetas y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchValladolid, SpainHQ recorded Nov 6, 202651-20052 contacts →

Exact match

“SYLTEC es una empresa independiente, constituída con el objetivo de ofrecer servicios integrales de ingeniería, consultoría y formación a nivel nacional.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMolina De Segura, SpainHQ recorded Nov 6, 2026201-50045 contacts →

Exact match

“En Comercial Industrial García, desde nuestra creación en el año 1962, tratamos de dar un servicio de suministro a la industria basado en tres principios fundamentales.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“TDI Sistemas es una compañía de capital privado íntegramente español.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5034 contacts →

Exact match

“Alsamasa nace en 2005 de la fusión de dos empresas especializadas en construcción e instalaciones.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLas Rozas De Madrid, SpainHQ recorded Nov 6, 202611-5033 contacts →

Exact match

“i3 Ingenieros es una compañía especializada en ingeniería, instalaciones y mantenimiento, con un modelo de trabajo integral orientado al control técnico, la ejecución real y la…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAlfafar, SpainHQ recorded Nov 6, 202651-20033 contacts →

Exact match

“VAINSA INFRAESTRUCTURAS SL es una empresa multidisciplinar con sede central en Valencia y con una clara orientación al cliente.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMarbella, SpainHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“En 1992 comenzó la andadura de Diego Díaz López como almacén distribuidor de material eléctrico y desde entonces el objetivo se ha mantenido intacto: ofrecer lo mejor a nuestros…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchHumanes De Madrid, SpainHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“OPS INFRAESTRUCTURAS Y SERVICIOS HIDRAULICOS SL is a construction company based out of CALLE DALIA, 4, MADRID, Madrid, Spain.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“CGM Telecomunicaciones, fundada en 1993, es una empresa de ingeniería versátil enfocada al desarrollo de servicios de valor añadido que cubran las necesidades de los clientes, a…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchCastellon, SpainHQ recorded Nov 6, 202611-5024 contacts →

Exact match

“TELECSO es una compañía especializada en la prestación de servicios técnicos y tecnológicos, que desarrolla las actividades de construcción, suministro, instalación y montaje…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchZaragoza, SpainHQ recorded Nov 6, 202651-20023 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchBarcelona, SpainHQ recorded Nov 6, 202651-20023 contacts →

Exact match

“IPSUM Proyectos Industriales S.L.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchAlmargen, SpainHQ recorded Nov 6, 202651-20019 contacts →

Exact match

“El grupo ONZAGA combina actividades tan diversas como la extracción de áridos, la fabricación y suministro de hormigones y asfaltos, o la obra civil y el mantenimiento de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 175 utility contractors and suppliers based in Spain

See the full list, filter by size, metro and specialty, and access 469 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Utility contractors and suppliers based in Spain at a glance

As of Nov 6, 2026
8.9%Verified-email coverage
30.3Average contacts per company
11-50Median size (employees)
13.1%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
37
11-50
78
51-200
45
201-500
4
501-1,000
3
1,001-5,000
7

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 175 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “utility contractors and suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 469 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “utility contractors and suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many utility contractors and suppliers are there based in Spain?

RevenueBase identified 175 company matches for utility contractors and suppliers associated with Spain as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

SEMI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most utility contractors and suppliers?

Madrid leads with 23 company records, followed by Barcelona (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 limited free results with 500 credits to start. Upgrading provides access to the 469 professional contacts with verified work emails tracked across these 175 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.