Company lists · Data refreshed September 2026

Top 25 Industrial decarbonization companies based in Spain

Name: Industrial decarbonization 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 117 companies tracked

RevenueBase identified 117 industrial decarbonization companies headquartered in Spain as of September 2026 and tracks 4,744 professional contacts across them, including 490 with verified work emails. Madrid is the largest hub.

This list covers industrial decarbonization companies 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 17, 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 17, 2026 86% judged on-target in blind review

117Companies

4,744Contacts tracked

490Verified emails

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The 25 largest industrial decarbonization companies based in Spain

Ranked by team size

Top 25 of 117 industrial decarbonization companies based in Spain, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to industrial decarbonization companies: 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	Zelestra	Partial evidence	SpainHQ checked Sep 17, 2026	501-1,000	929 contacts →
	Partial evidence “At Zelestra, we are on a mission to change the world by making decarbonization a reality for our partners.” Source: RevenueBase Database · checked Sep 17, 2026
2	Inerco	Partial evidence	Sevilla, SpainHQ checked Sep 17, 2026	1,001-5,000	688 contacts →
	Partial 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 17, 2026
3	TECAM	Indirect evidence	Polinyà, SpainHQ checked Sep 17, 2026	51-200	56 contacts →
	Indirect evidence “Customized solutions for waste valorization and emissions treatment.” Source: RevenueBase Database · checked Sep 17, 2026
4	Logos Energía	Indirect evidence	Santander, SpainHQ checked Sep 17, 2026	11-50	31 contacts →
	Indirect evidence “En LoGOs Energía compartimos contigo la energía que nos mueve a buscar las mejores tarifas y soluciones energéticas.” Source: RevenueBase Database · checked Sep 17, 2026
5	Inergy	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	29 contacts →
	Indirect evidence “Inergy tiene como misión contribuir al ahorro energético de sus clientes, reduciendo su factura energética, y favoreciendo al mismo tiempo la mitigación del cambio climático.” Source: RevenueBase Database · checked Sep 17, 2026
6	Centro Tecnológico Energylab	Indirect evidence	Vigo, SpainHQ checked Sep 17, 2026	11-50	28 contacts →
	Indirect evidence “Estamos comprometidos con la descarbonización a través del uso eficiente y sostenible de los recursos, y especializados en el impulso de la eficiencia y la sostenibilidad…” Source: RevenueBase Database · checked Sep 17, 2026
7	Energía Local	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	27 contacts →
	Indirect evidence “Somos una consultora especializada en el ámbito energético y sostenibilidad.” Source: RevenueBase Database · checked Sep 17, 2026
8	Grupo Zero Waste Energy	Indirect evidence	Málaga, SpainHQ checked Sep 17, 2026	51-200	27 contacts →
	Indirect evidence “Zero Waste Energy es un grupo de empresas dedicadas a la producción de energía eléctrica mediante fuentes de energía renovables y cogeneración, así como al tratamiento eficiente…” Source: RevenueBase Database · checked Sep 17, 2026
9	Ecoterrae	Indirect evidence	Sevilla, SpainHQ checked Sep 17, 2026	11-50	25 contacts →
	Indirect evidence “ECOTERRAE es una empresa creada con el objetivo de Generar Valor a proyectos Bajos en Carbono y con un Alto grado de Sostenibilidad, a través de:* Financiación del Carbono…” Source: RevenueBase Database · checked Sep 17, 2026
10	Manglai	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “An AI-powered solution committed to minimizing carbon footprints, Manglai is dedicated to empowering businesses globally to foster a more sustainable future for our planet.” Source: RevenueBase Database · checked Sep 17, 2026
11	IEQSY	Indirect evidence	Tres Cantos, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “IEQSY somos una compañía que cuenta con una tecnología única, innovadora y diferencial, como fruto de más de 30 años destinados a I+D+i en el mundo de la eficiencia energética.” Source: RevenueBase Database · checked Sep 17, 2026
12	IGU Energy	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence “iGU Energy nace con la vocación de contribuir en la transición energética global y promover una economía descarbonizada.” Source: RevenueBase Database · checked Sep 17, 2026
13	Build To Zero	Indirect evidence	Sevilla, SpainHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Our mission is to achieve a net-zero industry.” Source: RevenueBase Database · checked Sep 17, 2026
14	Reolum	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Reolum concibe y desarrolla proyectos innovadores para impulsar la descarbonización y avanzar en la transición energética.” Source: RevenueBase Database · checked Sep 17, 2026
15	Ecómetro	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	1-10	17 contacts →
	Indirect evidence “In Ecómetro we develop technologies, consulting and training to help you incorporate the measurement of the carbon footprint and the certification of buildings CO2 free emisions…” Source: RevenueBase Database · checked Sep 17, 2026
16	AELEC	Indirect evidence	Madrid, SpainHQ checked Sep 17, 2026	11-50	17 contacts →
	Indirect evidence “Somos la Asociación de Empresas de Energía Eléctrica, presentes de forma amplia en la cadena de valor de la electricidad.” Source: RevenueBase Database · checked Sep 17, 2026
17	Grupo Bikote Solar	Indirect evidence	Leioa, SpainHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “Desde el año 2006, en Grupo Bikote Solar, asesoramos y acompañamos a las empresas en su objetivo de ser más competitivas y sostenibles.” Source: RevenueBase Database · checked Sep 17, 2026
18	Hydnum Steel	Partial evidence	Puertollano, SpainHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “We drive the decarbonization of the industry by developing the steel plant of the future: digital, sustainable and fossil-free.” Source: RevenueBase Database · checked Sep 17, 2026
19	SBS	Indirect evidence	Leioa, SpainHQ checked Sep 17, 2026	1-10	10 contacts →
	Indirect evidence “Do you want to reduce your environmental footprint?” Source: RevenueBase Database · checked Sep 17, 2026
20	Airco2	Indirect evidence	Pontevedra, SpainHQ checked Sep 17, 2026	11-50	9 contacts →
	Indirect evidence “En airCO2 somos una empresa líder en la gestión integral (360º) de la huella de carbono, combinando tecnología avanzada con un enfoque personalizado para ayudar a las…” Source: RevenueBase Database · checked Sep 17, 2026
21	Km0 Energy	Indirect evidence	Terrassa, SpainHQ checked Sep 17, 2026	1-10	9 contacts →
	Indirect evidence “A Km0 Energy apliquem els nostres coneixements, esforços i experiència en el sector de l’energia per oferir solucions reals al sector públic i privat per una energia neta…” Source: RevenueBase Database · checked Sep 17, 2026
22	Ekienergy	Indirect evidence	Vitoria - Gasteiz, SpainHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “UNA VISIÓN DIFERENCIAL HACIA LA DESCARBONIZACIÓN PARA LOGRAR LA GESTIÓN INTELIGENTE DE LA ENERGÍA EKIENERGY nace con el objetivo de acelerar la descarbonización del sector…” Source: RevenueBase Database · checked Sep 17, 2026
23	Euthenia Deep Green	Indirect evidence	Marbella (málaga), SpainHQ checked Sep 17, 2026	11-50	7 contacts →
	Indirect evidence “Euthenia ENERGY (EE) is a privately-held international company dedicated to renewable and sustainable energy solutions.” Source: RevenueBase Database · checked Sep 17, 2026
24	Electra Homedes	Indirect evidence	Lleida, SpainHQ checked Sep 17, 2026	11-50	6 contacts →
	Indirect evidence “Electra Homedes, nace en 1957 como empresa dedicada a las instalaciones eléctricas.” Source: RevenueBase Database · checked Sep 17, 2026
25	Presente	Indirect evidence	Barcelona, SpainHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “Presente convierte a tu empresa en parte de la solución frente al cambio climático.” Source: RevenueBase Database · checked Sep 17, 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: industrial decarbonization companies. 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 industrial decarbonization companies.
Partial evidence: Its own public description names part of industrial decarbonization companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industrial decarbonization companies. 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 117 industrial decarbonization companies based in Spain

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Industrial decarbonization companies based in Spain at a glance

As of Sep 17, 2026

10.3%Verified-email coverage

40.5Average contacts per company

1-10Median size (employees)

28.2%Largest-city concentration · Madrid

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 117 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 industrial decarbonization companies, 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 “industrial decarbonization companies”. 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 industrial decarbonization companies), 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 industrial decarbonization companies, 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, 490 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 17, 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.

Industrial decarbonization companies by metro

Industrial decarbonization companies in Madrid33

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 industrial decarbonization companies, 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 industrial decarbonization companies are there based in Spain?

RevenueBase identified 117 industrial decarbonization companies 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?

Zelestra, headquartered in Spain, tops this list with the largest team on record.

Which city has the most industrial decarbonization companies?

Madrid leads with 33 headquartered companies, followed by Barcelona (15) and Sevilla (6).

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 490 verified decision-maker contacts tracked across these 117 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 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 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.