Company lists · Data refreshed September 2026

Top 10 Integrated energy companies based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 65 companies tracked

RevenueBase identified 65 company matches for integrated energy companies associated with Spain as of September 2026 and tracks 11,233 professional contacts across them, including 746 with verified work emails. Madrid is the largest hub.

This list covers company matches for integrated energy companies 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 September 17, 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 Sep 17, 2026 How this list was built

65Companies

11,233Contacts tracked

746Verified emails

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The 10 largest integrated energy companies based in Spain

Ranked by team size

Top 10 of 65 company matches for integrated energy companies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	GAS Natural Fenosa	Exact match	Barcelona, SpainHQ recorded Sep 17, 2026	10001+	3,951 contacts →
	Exact match “Gas Natural Fenosa is a leading multi-national in the gas and power sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Nexus Energía	Exact match	Barcelona, SpainHQ recorded Sep 17, 2026	201-500	202 contacts →
	Exact match “Nexus Energía es una empresa energética cuyo buque insignia es la comercialización de electricidad y gas natural.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Tradivel	Exact match	Alcorcón, SpainHQ recorded Sep 17, 2026	501-1,000	166 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 · Sep 17, 2026 · View company records in RevenueBase
4	Viroque Energy	Exact match	Madrid, SpainHQ recorded Sep 17, 2026	11-50	36 contacts →
	Exact match “Leaders in the international trading and supply of quality energy resources.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Celnet Comunicaciones	Exact match	Carrión De Los Céspedes, SpainHQ recorded Sep 17, 2026	11-50	16 contacts →
	Exact match “Celnet Comunicaciones es una empresa especializada en ofrecer soluciones de alto nivel tecnológico para el sector energético.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	E. Power	Exact match	Logroño, SpainHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match “E.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Esedegal	Exact match	Santiago De Compostela, SpainHQ recorded Sep 17, 2026	1-10	7 contacts →
	Exact match “ESEDEGAL SL is a energy services company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Opción Energía	Exact match	Barbera Del Valles, SpainHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “Opción Energía, somos una empresa comercializadora de energía eléctrica, gas natural y soluciones de eficiencia energética con clara orientación al cliente, dirigida a ofrecer…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Greening Energía	Exact match	Granada, SpainHQ recorded Sep 17, 2026	201-500	5 contacts →
	Exact match “Creada en 2011 con un firme compromiso con la sostenibilidad, Greening-e es una empresa de ámbito internacional especializada en el diseño, desarrollo, construcción y…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Agri-Energia, S.A	Exact match	Banyoles, SpainHQ recorded Sep 17, 2026	11-50	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “integrated energy companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 10 of 65 integrated energy companies based in Spain

See the full list, filter by size, metro and specialty, and access 746 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Integrated energy companies based in Spain at a glance

As of Sep 17, 2026

6.6%Verified-email coverage

172.8Average contacts per company

11-50Median size (employees)

24.6%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 65 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 “integrated energy companies” 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 746 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 September 17, 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 “integrated energy companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many integrated energy companies are there based in Spain?

RevenueBase identified 65 company matches for integrated energy companies associated with Spain as of September 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?

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

Which city has the most integrated energy companies?

Madrid leads with 16 company records, followed by Barcelona (3) and Santiago De Compostela (3).

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 746 professional contacts with verified work emails tracked across these 65 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 September 17, 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.