Company lists · Data refreshed September 2026

Top 25 Energy infrastructure law firms based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 294 companies tracked

RevenueBase identified 294 energy infrastructure law firms headquartered in Spain as of September 2026 and tracks 3,208 professional contacts across them, including 467 with verified work emails. Madrid is the largest hub.

This list covers energy infrastructure law firms 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 28, 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 28, 2026 86% judged on-target in blind review

294Companies

3,208Contacts tracked

467Verified emails

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The 25 largest energy infrastructure law firms based in Spain

Ranked by team size

Top 25 of 294 energy infrastructure law firms based in Spain, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to energy infrastructure law firms: 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	Esteyco	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	201-500	268 contacts →
	Indirect evidence “Desde 1970 ESTEYCO ha desarrollado internacionalmente más de 1.300 estudios y proyectos.” Source: RevenueBase Database · checked Sep 28, 2026
2	Ecointegral Ingeniería, SL	Partial evidence	Córdoba, SpainHQ checked Sep 28, 2026	201-500	234 contacts →
	Partial evidence “ECOINTEGRAL INGENIERÍA is an independent company of advanced engineering and consulting firm that operates in 3 areas of expertise: Energy, Telecommunications and Environment.” Source: RevenueBase Database · checked Sep 28, 2026
3	MAI Group	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	51-200	152 contacts →
	Partial evidence “MAI has been in international consultancy for over 25 years driving energy and environmental project around the world, helping to design and plan reliable supply systems based on…” Source: RevenueBase Database · checked Sep 28, 2026
4	Vestel Ingenieros	Indirect evidence	Paterna, SpainHQ checked Sep 28, 2026	51-200	135 contacts →
	Indirect evidence “Vestel Ingenieros es una empresa con 20 años de experiencia que tiene el propósito de convertirse en la ingeniería eléctrica nº1 de España.” Source: RevenueBase Database · checked Sep 28, 2026
5	Voltae Engineering	Indirect evidence	Sevilla, SpainHQ checked Sep 28, 2026	51-200	132 contacts →
	Indirect evidence “Somos una compañía de ingeniería y consultoría altamente especializada, ofreciendo servicios integrales de alto valor en proyectos de transmisión, distribución y generación de…” Source: RevenueBase Database · checked Sep 28, 2026
6	Maio Legal	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	51-200	108 contacts →
	Partial evidence “MAIO Legal is a law firm founded in 2011.” Source: RevenueBase Database · checked Sep 28, 2026
7	Azigrene Energy Consulting	Partial evidence	Valencia/valència, SpainHQ checked Sep 28, 2026	51-200	58 contacts →
	Partial evidence “Azigrene es una empresa de servicios de Consultoría e Ingeniería Energética, que desarrolla su actividad en- Reducción del coste: Definición de la mejor estrategia de compra…” Source: RevenueBase Database · checked Sep 28, 2026
8	G-Advisory	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	45 contacts →
	Partial evidence “G-advisory - Consultoría estratégica en Energía y ESG Filial de Garrigues que ofrece asesoramiento técnico, económico y estratégico en todo tipo de energías y servicios de ESG.” Source: RevenueBase Database · checked Sep 28, 2026
9	Itecla Ingeniería S.L	Partial evidence	Baena, SpainHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “ITECLA es una ingeniería especializada en infraestructuras eléctricas de alta y media tensión y en proyectos de energías renovables a escala utility.” Source: RevenueBase Database · checked Sep 28, 2026
10	Blas DE Lezo	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Blas de Lezo Abogados ofrece una solución adecuada a las necesidades de su negocio.” Source: RevenueBase Database · checked Sep 28, 2026
11	Energía Local	Partial evidence	Barcelona, SpainHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “Somos una consultora especializada en el ámbito energético y sostenibilidad.” Source: RevenueBase Database · checked Sep 28, 2026
12	C&p Abogados	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Despacho de abogados especializado en los sectores bancario, financiero, asegurador y construcción, con más de 25 años de experiencia en el asesoramiento y la representación de…” Source: RevenueBase Database · checked Sep 28, 2026
13	Soltec Ingenieros S.L	Indirect evidence	Vigo, SpainHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Soltec Ingenieros SL, founded in 2001, is an independent engineering and consulting firm based in Vigo, Spain.” Source: RevenueBase Database · checked Sep 28, 2026
14	Ogisa Infraestructuras S.A	Indirect evidence	Zaragoza, SpainHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	Deurza Consulting	Indirect evidence	Zaragoza, SpainHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Deurza es una consultora integral especializada en servicios técnicos y legales de urbanismo, arquitectura, ingeniería y legal.” Source: RevenueBase Database · checked Sep 28, 2026
16	Rivero & Gustafson Abogados	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Rivero & Gustafson Abogados, fundado en 1997 por Sebastián Rivero y John R.” Source: RevenueBase Database · checked Sep 28, 2026
17	Emberiza	Partial evidence	La Coruña, SpainHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “EMBERIZA es la consultoría ambiental especialista en tramitación de infraestructuras de energías renovables.” Source: RevenueBase Database · checked Sep 28, 2026
18	Grupo Ureka	Partial evidence	Alcorcón, SpainHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “Grupo UREKA es líder en la gestión de obras, infraestructuras, energías renovables servicios.” Source: RevenueBase Database · checked Sep 28, 2026
19	MRC Consultants And Transaction Advisers	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “MRC Consultants and Transaction Advisers is a consultancy, based in Spain, and started in 2014.” Source: RevenueBase Database · checked Sep 28, 2026
20	Vision Grid Energy	Partial evidence	Seville, SpainHQ checked Sep 28, 2026	51-200	20 contacts →
	Partial evidence “Vision Grid Energy is an independent engineering and technical advisory firm specialized in structuring bankable renewable and green hydrogen projects.” Source: RevenueBase Database · checked Sep 28, 2026
21	Worldwide Recruitment Energy	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Your Strategic Partner in Energy Transformation At Worldwide Recruitment Energy (WRE), we connect the most innovative energy companies with the right talent to drive their growth.” Source: RevenueBase Database · checked Sep 28, 2026
22	Fabregat Perulles Sales Abogados	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	11-50	18 contacts →
	Indirect evidence “At Fabregat Perulles Sales, Abogados we have, since our foundation in been advising clients effectively, practically, commercially and dynamically at both a national and an…” Source: RevenueBase Database · checked Sep 28, 2026
23	SBS Simon I Blanco, SL	Indirect evidence	Barcelona, SpainHQ checked Sep 28, 2026	11-50	17 contacts →
	Indirect evidence “Somos una consultoría de edificación, infraestructuras y medio ambiente integrada por profesionales con una dilatada experiencia en los ámbitos públicos y privados.” Source: RevenueBase Database · checked Sep 28, 2026
24	Iter LAW	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “ITER Law is a law firm with a sector-focused specialisation.” Source: RevenueBase Database · checked Sep 28, 2026
25	E3g Ingeniería Y Energía	Partial evidence	Lleida, SpainHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Som una empresa amb una trajectòria de més de 25 anys d’experiència, especialitzada en projectes d’instal·lacions i industrials, gestió energètica i enginyeria legal.” Source: RevenueBase Database · checked Sep 28, 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 law firms. 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 law firms.
Partial evidence: Its own public description names part of energy infrastructure law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy infrastructure law firms. 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 294 energy infrastructure law firms based in Spain

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Energy infrastructure law firms based in Spain at a glance

As of Sep 28, 2026

14.6%Verified-email coverage

10.9Average contacts per company

1-10Median size (employees)

26.2%Largest-city concentration · Madrid

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

176

11-50

51-200

201-500

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 294 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 law firms, 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 law firms”. 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 law firms), 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 law firms, 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, 467 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 28, 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 law firms by metro

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 law firms, 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 law firms are there based in Spain?

RevenueBase identified 294 energy infrastructure law firms 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?

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

Which city has the most energy infrastructure law firms?

Madrid leads with 77 headquartered companies, followed by Barcelona (30) and Valencia (13).

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 467 verified decision-maker contacts tracked across these 294 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 28, 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.