Company lists · Data refreshed September 2026

Top 25 Geothermal consultants based in Spain

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 841 companies tracked

RevenueBase identified 841 geothermal consultants headquartered in Spain as of September 2026 and tracks 7,619 professional contacts across them, including 802 with verified work emails. Madrid is the largest hub.

This list covers geothermal consultants 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 20, 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 20, 2026 86% judged on-target in blind review

841Companies

7,619Contacts tracked

802Verified emails

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The 25 largest geothermal consultants based in Spain

Ranked by team size

Top 25 of 841 geothermal consultants based in Spain, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal consultants: 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	Revergy	Indirect evidence	Seville, SpainHQ checked Sep 20, 2026	501-1,000	502 contacts →
	Indirect evidence “REVERGY nace mediante un proyecto de profesionales procedentes de diferentes ámbitos del sector de las energías renovables con el fin de presentar un proyecto marcado por la…” Source: RevenueBase Database · checked Sep 20, 2026
2	Enertis Applus	Partial evidence	Madrid, SpainHQ checked Sep 20, 2026	201-500	379 contacts →
	Partial evidence “Enertis Applus+ is a global engineering consultancy firm with extensive expertise in the renewable energy and BESS industry.” Source: RevenueBase Database · checked Sep 20, 2026
3	AESA	Indirect evidence	Barcelona, SpainHQ checked Sep 20, 2026	n/a	351 contacts →
	Indirect evidence “Ingeniería y Consultoría Energética orientada a la búsqueda y el desarrollo de soluciones energéticas de alta eficiencia para sus Clientes.” Source: RevenueBase Database · checked Sep 20, 2026
4	Sólida	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	201-500	298 contacts →
	Indirect evidence “SÓLIDA, a Bureau Veritas Company, is an independent company founded in 2007 that provides high added-value engineering and consulting services within the renewable energy sector.” Source: RevenueBase Database · checked Sep 20, 2026
5	Ecointegral Ingeniería, SL	Indirect evidence	Córdoba, SpainHQ checked Sep 20, 2026	201-500	234 contacts →
	Indirect 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 20, 2026
6	Quadrante Izharia	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 20, 2026	1,001-5,000	178 contacts →
	Indirect evidence “Nos dedicamos a la Ingeniería de Subestaciones y Lineas de AT y MT.” Source: RevenueBase Database · checked Sep 20, 2026
7	MAI Group	Partial evidence	Madrid, SpainHQ checked Sep 20, 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 20, 2026
8	Tecnoambiente	Partial evidence	Cerdanyola Del Vallès, SpainHQ checked Sep 20, 2026	51-200	126 contacts →
	Partial evidence “Tecnoambiente, a wholly owned subsidiary of TRADEBE, is a multidisciplinary geoscience-environmental survey, subsea inspections and environmental consultancy company, with an…” Source: RevenueBase Database · checked Sep 20, 2026
9	Barlovento Applus	Indirect evidence	Logroño, SpainHQ checked Sep 20, 2026	51-200	123 contacts →
	Indirect evidence “Barlovento Applus+ is a global consulting, engineering, and testing company with extensive expertise in the wind industry.” Source: RevenueBase Database · checked Sep 20, 2026
10	Grupo Trebol Energia	Partial evidence	Sant Joan Despi, SpainHQ checked Sep 20, 2026	51-200	84 contacts →
	Partial evidence “We are one of the leading energy business consultancies in Spain.” Source: RevenueBase Database · checked Sep 20, 2026
11	Tresca Ingeniería, S.A	Indirect evidence	Léon, SpainHQ checked Sep 20, 2026	51-200	78 contacts →
	Indirect evidence “Tresca Ingeniería nace en 2001, ofreciendo a sus clientes servicios de ingeniería y consultoría en los sectores industrial, terciario y residencial.” Source: RevenueBase Database · checked Sep 20, 2026
12	Tauw Iberia	Partial evidence	Madrid, SpainHQ checked Sep 20, 2026	51-200	65 contacts →
	Partial evidence “Tauw Iberia is an independent environmental consultancy and engineering company established in 1989.” Source: RevenueBase Database · checked Sep 20, 2026
13	Sferaone	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	51-200	61 contacts →
	Indirect evidence “SferaOne, parte del Grupo Diggia, es una empresa que realiza actividades de proyección global desde 2002, especializada en la transición Energética desarrollando trabajos de…” Source: RevenueBase Database · checked Sep 20, 2026
14	Azigrene Energy Consulting	Indirect evidence	Valencia/valència, SpainHQ checked Sep 20, 2026	51-200	58 contacts →
	Indirect 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 20, 2026
15	Diagnóstiqa	Indirect evidence	Torrejón De Ardoz, SpainHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence “DiagnóstiQA se constituye en junio de 2007 con el objeto de proporcionar servicios técnicos de Consultoría, Asistencia Técnica, Supervisión, Inspección y Diagnóstico para el…” Source: RevenueBase Database · checked Sep 20, 2026
16	Veringer Engineering	Partial evidence	Santander, SpainHQ checked Sep 20, 2026	201-500	52 contacts →
	Partial evidence “Vèringer Engineering is a consultancy specialized in engineering talent solutions for complex industrial and energy projects worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
17	Catalana DE Perforacions	Indirect evidence	Santpedor, SpainHQ checked Sep 20, 2026	201-500	50 contacts →
	Indirect evidence “Catalana de Perforacions SA is a global operating company founded in 1968 and is part of the Aquacenter Group.” Source: RevenueBase Database · checked Sep 20, 2026
18	Syltec	Indirect evidence	Valladolid, SpainHQ checked Sep 20, 2026	51-200	47 contacts →
	Indirect evidence “SYLTEC es una empresa independiente, constituída con el objetivo de ofrecer servicios integrales de ingeniería, consultoría y formación a nivel nacional.” Source: RevenueBase Database · checked Sep 20, 2026
19	Solideo ECO Systems	Indirect evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 20, 2026	51-200	44 contacts →
	Indirect evidence “We are an engineering and consulting company specialised in solar energy and energy efficiency.” Source: RevenueBase Database · checked Sep 20, 2026
20	Ecos Group	Partial evidence	Las Palmas De Gran Canaria, SpainHQ checked Sep 20, 2026	11-50	39 contacts →
	Partial evidence “At ECOS Group (ECOS Estudios Ambientales y Oceanografía S.L.), we are an environmental consultancy and coastal engineering firm with over 18 years of experience, specialized in…” Source: RevenueBase Database · checked Sep 20, 2026
21	4fores	Indirect evidence	Zaragoza, SpainHQ checked Sep 20, 2026	11-50	37 contacts →
	Indirect evidence “4fores is fast-growing applied-R&D, field-testing and power electronics company working in the Renewable Energies sector (Wind Energy, Photovoltaics and CHP plants) providing to…” Source: RevenueBase Database · checked Sep 20, 2026
22	Geointec	Indirect evidence	Madrid, SpainHQ checked Sep 20, 2026	11-50	34 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
23	Geoter Geothermal Energy	Indirect evidence	S.s. Reyes, SpainHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect evidence “Energía geotérmica.” Source: RevenueBase Database · checked Sep 20, 2026
24	Naturelek Energía E Ingeniería	Indirect evidence	Derio, SpainHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect evidence “Somos una ingeniería y consultora especializada en eficiencia, gestión y transformación energética para empresas, con un enfoque técnico, integral y orientado a resultados.” Source: RevenueBase Database · checked Sep 20, 2026
25	Itecla Ingeniería S.L	Indirect evidence	Baena, SpainHQ checked Sep 20, 2026	51-200	30 contacts →
	Indirect 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 20, 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: geothermal consultants. 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 geothermal consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal consultants. 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 841 geothermal consultants based in Spain

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Geothermal consultants based in Spain at a glance

As of Sep 20, 2026

10.5%Verified-email coverage

9.1Average contacts per company

1-10Median size (employees)

15.5%Largest-city concentration · Madrid

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

544

11-50

245

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 841 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 geothermal consultants, 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 “geothermal consultants”. 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 geothermal consultants), 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 geothermal consultants, 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, 802 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 20, 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.

Geothermal consultants by metro

Geothermal consultants in Madrid130
Geothermal consultants in Barcelona52

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 geothermal consultants, 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 geothermal consultants are there based in Spain?

RevenueBase identified 841 geothermal consultants 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?

Revergy, headquartered in Seville, tops this list with the largest team on record.

Which city has the most geothermal consultants?

Madrid leads with 130 headquartered companies, followed by Barcelona (52) and Sevilla (19).

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 802 verified decision-maker contacts tracked across these 841 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 20, 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.