Company lists · Data refreshed September 2026
Top 25 Carbon consulting companies based in Spain
RevenueBase identified 363 carbon consulting companies headquartered in Spain as of September 2026 and tracks 3,703 professional contacts across them, including 491 with verified work emails. Madrid is the largest hub.
This list covers carbon consulting 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 21, 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.
The 25 largest carbon consulting companies based in Spain
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 337 contacts → | ||||
Indirect evidence “Som una empresa especialitzada en sostenibilitat, aliada amb les organitzacions, territoris i persones compromesos amb un món més sostenible, als quals acompanyem en la seva…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 174 contacts → | ||||
Indirect evidence “Impulsamos la sostenibilidad empresarial con soluciones técnicas y reales.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 84 contacts → | ||||
Indirect evidence “We are one of the leading energy business consultancies in Spain.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 77 contacts → | ||||
Partial evidence “Hi, we’re Sygris, Spain’s leader in sustainability consulting and ESG software.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 71 contacts → | ||||
Indirect evidence “TAXUS MEDIO AMBIENTE es una consultoría ambiental.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 69 contacts → | ||||
Indirect evidence “CIMAS Innovación y Medio Ambiente es una compañía de servicios avanzados especializada en Desarrollo Sostenible y Medio Ambiente.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 48 contacts → | ||||
Indirect evidence “At Ineria Management, we help Real Estate and Infrastructure companies integrate sustainability and decarbonization into their projects, creating value through ESG.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 46 contacts → | ||||
Indirect evidence “Transcendent es una consultora estratégica de Impacto y sostenibilidad.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 33 contacts → | ||||
Partial evidence “With over 20 years of expertise in the environmental sector, ERF-Energy and Sustainability is a significant firm in the strategic environmental consulting industry that it has…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 33 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 32 contacts → | ||||
Indirect evidence “Somos Grupo Innova, una Consultoría Integral para PYMES en la Comunidad Valenciana, ubicados en Ontinyent, capital de la Vall d'Albaida.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 30 contacts → | ||||
Indirect evidence “En Deplan llevamos más de 30 años ofreciendo soluciones de ingeniería, consultoría ambiental y sostenibilidad para empresas y organizaciones.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 30 contacts → | ||||
Indirect evidence “Consultora ambiental y de sostenibilidad social y económica.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 29 contacts → | ||||
Indirect evidence “Somos un socio de confianza estratégico para nuestros clientes.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 29 contacts → | ||||
Indirect evidence “EXTREPRONATUR SL es una consultora medioambiental y servicios AVENIDA JUAN PEREDA PILA, 1, BADAJOZ, Badajoz, Spain.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 28 contacts → | ||||
Indirect 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 28 contacts → | ||||
Indirect evidence “EHS TECHNIQUES is a Social, Environmental and Health and Safety consultancy with a team of professionals and associates with a strong experience in providing best available…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 27 contacts → | ||||
Indirect evidence “Somos una consultora especializada en el ámbito energético y sostenibilidad.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 27 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 25 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 24 contacts → | ||||
Indirect evidence “ICATALIST is a young and innovative company founded in 2013.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 20 contacts → | ||||
Indirect evidence “MRC Consultants and Transaction Advisers is a consultancy, based in Spain, and started in 2014.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 19 contacts → | ||||
Indirect evidence “OMAWA es una consultora creada con la vocación de ofrecer un servicio diferente y de alto valor añadido, que permita abordar la SOSTENIBILIDAD en cualquier organización…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: carbon consulting 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 carbon consulting companies.
- Partial evidence
- Its own public description names part of carbon consulting companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name carbon consulting 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 363 carbon consulting companies based in Spain
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Carbon consulting companies based in Spain at a glance
As of Sep 21, 2026Companies by employee count
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 363 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 carbon consulting 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 “carbon consulting 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 carbon consulting 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 carbon consulting 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, 491 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 21, 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.
Carbon consulting companies by metro
- Carbon consulting companies in Madrid90
- Carbon consulting companies in Barcelona46
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 carbon consulting 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 carbon consulting companies are there based in Spain?
RevenueBase identified 363 carbon consulting 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?
Inerco, headquartered in Sevilla, tops this list with the largest team on record.
Which city has the most carbon consulting companies?
Madrid leads with 90 headquartered companies, followed by Barcelona (46) and Valencia (15).
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 491 verified decision-maker contacts tracked across these 363 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 21, 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.
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