Company lists · Data refreshed September 2026

Top 25 Energy recovery consulting firms based in Spain

Name: Energy recovery consulting 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 526 companies tracked

RevenueBase identified 526 energy recovery consulting firms headquartered in Spain as of September 2026 and tracks 4,738 professional contacts across them, including 405 with verified work emails. Madrid is the largest hub.

This list covers energy recovery consulting 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

526Companies

4,738Contacts tracked

405Verified emails

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The 25 largest energy recovery consulting firms based in Spain

Ranked by team size

Top 25 of 526 energy recovery consulting 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 recovery consulting 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	Inerco	Indirect evidence	Sevilla, SpainHQ checked Sep 28, 2026	1,001-5,000	688 contacts →
	Indirect evidence “INERCO, with 30 years of experience, offers comprehensive services and develops advanced technologies that contribute to sustainable industrial development, acting as a leader in…” Source: RevenueBase Database · checked Sep 28, 2026
2	AESA	Partial evidence	Barcelona, SpainHQ checked Sep 28, 2026	n/a	351 contacts →
	Partial 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 28, 2026
3	Sólida	Strong evidence	Madrid, SpainHQ checked Sep 28, 2026	201-500	298 contacts →
	Strong 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 28, 2026
4	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
5	Grupo Trebol Energia	Partial evidence	Sant Joan Despi, SpainHQ checked Sep 28, 2026	51-200	84 contacts →
	Partial evidence “We are one of the leading energy business consultancies in Spain.” Source: RevenueBase Database · checked Sep 28, 2026
6	NESS	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	11-50	81 contacts →
	Partial evidence “NESS, empresa de servicios energéticos especializada en la gestión y ahorro energético.” Source: RevenueBase Database · checked Sep 28, 2026
7	Vivendio Grupo Aconser	Partial evidence	Granada, SpainHQ checked Sep 28, 2026	51-200	73 contacts →
	Partial evidence “En Vivendio, empresa perteneciente a Grupo Aconser, nos dedicamos a la eficiencia y rehabilitación energética.” Source: RevenueBase Database · checked Sep 28, 2026
8	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
9	Solideo ECO Systems	Strong evidence	Sant Cugat Del Vallès, SpainHQ checked Sep 28, 2026	51-200	44 contacts →
	Strong evidence “We are an engineering and consulting company specialised in solar energy and energy efficiency.” Source: RevenueBase Database · checked Sep 28, 2026
10	Grupo Emececuadrado	Partial evidence	Badajoz, SpainHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “Emececuadrado es una de las principales compañías del sector energético, especializada en el asesoramiento y la optimización de recursos energéticos para empresas, organismos…” Source: RevenueBase Database · checked Sep 28, 2026
11	Naturelek Energía E Ingeniería	Partial evidence	Derio, SpainHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial 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 28, 2026
12	Ge&pe	Partial evidence	Sevilla, SpainHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “GE & PE was created in 1983 with the purpose of covering the needs and increasingly complex management and efficiency tasks related to the supply and consumption of energy by…” Source: RevenueBase Database · checked Sep 28, 2026
13	Energy Tools	Partial evidence	Olot, SpainHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “A Energy Tools, empresa líder en el mercat, ajudem, de manera ètica i transparent, les empreses amb grans consums energètics a prendre les millors decisions.” Source: RevenueBase Database · checked Sep 28, 2026
14	EDE Ingenieros	Partial evidence	SpainHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Empresa de servicios de Ingeniería y Consultoría Energética e Industrial, que desarrolla su actividad en las áreas de:* Generación y Uso Racional de la Energía en la Industria y…” Source: RevenueBase Database · checked Sep 28, 2026
15	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
16	Enertika	Strong evidence	Barcelona, SpainHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong evidence “Enertika is a leading consulting company in the Spanish market about Energy Efficiency.” Source: RevenueBase Database · checked Sep 28, 2026
17	Letter Ingenieros	Strong evidence	Granada, SpainHQ checked Sep 28, 2026	11-50	27 contacts →
	Strong evidence “We offer companies efficient solutions with the best consulting and engineering services in: Energy Management Energy certification and qualification of buildings Energy…” Source: RevenueBase Database · checked Sep 28, 2026
18	Soltec Ingenieros S.L	Partial evidence	Vigo, SpainHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial 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
19	Cavo Energías	Partial evidence	Valencia, SpainHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “Empresa de servicios energéticos, especializada en diversas disciplinas en materia de ahorro energético y con una amplia formación derivada de sus más de 15 años de experiencia en…” Source: RevenueBase Database · checked Sep 28, 2026
20	Indelcasa	Partial evidence	Ortuella, SpainHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Desde 1972, INDELCASA ha mantenido un compromiso, poner a su disposición las más modernas técnicas orientadas a la mejora energética de las instalaciones- Intercambiadores de…” Source: RevenueBase Database · checked Sep 28, 2026
21	KW Solutions	Partial evidence	Málaga, SpainHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Desarrollamos soluciones de eficiencia energética.” Source: RevenueBase Database · checked Sep 28, 2026
22	Eficae Soluciones	Indirect evidence	Badajoz, SpainHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Eficae Soluciones was founded in 2016 from the collaboration between three industrial engineers graduated from the University of Extremadura forming a multidisciplinary team in…” Source: RevenueBase Database · checked Sep 28, 2026
23	Ergonia Business Solutions, S.L	Partial evidence	Fuenlabrada, SpainHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “Asesores energéticos especialistas en la optimización de la factura energética.” Source: RevenueBase Database · checked Sep 28, 2026
24	Ingebau Soluciones DE Ingeniería SL	Partial evidence	Sevilla, SpainHQ checked Sep 28, 2026	1-10	14 contacts →
	Partial evidence “Servicios de Ingeniería y Consultoría en general y Energía en Particular.” Source: RevenueBase Database · checked Sep 28, 2026
25	Energétikos	Partial evidence	Murcia, SpainHQ checked Sep 28, 2026	1-10	13 contacts →
	Partial evidence “Hola, somos Energétikos, una empresa de ingeniería y consultoría energética que te consigue la mejor tarifa de luz, adaptada a tu estilo de vida.” 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 recovery consulting 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 recovery consulting firms.
Partial evidence: Its own public description names part of energy recovery consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy recovery consulting 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 526 energy recovery consulting firms based in Spain

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Energy recovery consulting firms based in Spain at a glance

As of Sep 28, 2026

8.5%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

18.6%Largest-city concentration · Madrid

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

340

11-50

147

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 526 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 recovery consulting 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 recovery consulting 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 recovery consulting 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 recovery consulting 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, 405 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 recovery consulting 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 recovery consulting 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 recovery consulting firms are there based in Spain?

RevenueBase identified 526 energy recovery consulting 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?

Inerco, headquartered in Sevilla, tops this list with the largest team on record.

Which city has the most energy recovery consulting firms?

Madrid leads with 98 headquartered companies, followed by Barcelona (35) and Sevilla (26).

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 405 verified decision-maker contacts tracked across these 526 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.