Company lists · Data refreshed September 2026

Top 25 Corporate sustainability agencies based in Spain

Name: Corporate sustainability agencies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 490 companies tracked

RevenueBase identified 490 corporate sustainability agencies headquartered in Spain as of September 2026 and tracks 4,212 professional contacts across them, including 526 with verified work emails. Madrid is the largest hub.

This list covers corporate sustainability agencies 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 19, 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 19, 2026 86% judged on-target in blind review

490Companies

4,212Contacts tracked

526Verified emails

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The 25 largest corporate sustainability agencies based in Spain

Ranked by team size

Top 25 of 490 corporate sustainability agencies based in Spain, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to corporate sustainability agencies: 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 19, 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 19, 2026
2	Anthesis ESP	Indirect evidence	Manlleu, SpainHQ checked Sep 19, 2026	201-500	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 19, 2026
3	Sm, Sistemas Medioambientales, SL	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	201-500	174 contacts →
	Indirect evidence “Impulsamos la sostenibilidad empresarial con soluciones técnicas y reales.” Source: RevenueBase Database · checked Sep 19, 2026
4	Sygris	Partial evidence	San Sebastián De Los Reyes, SpainHQ checked Sep 19, 2026	51-200	77 contacts →
	Partial evidence “Hi, we’re Sygris, Spain’s leader in sustainability consulting and ESG software.” Source: RevenueBase Database · checked Sep 19, 2026
5	Taxus Medio Ambiente	Indirect evidence	Oviedo, SpainHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “TAXUS MEDIO AMBIENTE es una consultoría ambiental.” Source: RevenueBase Database · checked Sep 19, 2026
6	CIMAS	Indirect evidence	Bilbao, SpainHQ checked Sep 19, 2026	n/a	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 19, 2026
7	Corresponsables	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	51 contacts →
	Indirect evidence “La pyme editorial Corresponsables nació en 2005 con la aparición de la primera edición del Anuario Empresa Responsable y Sostenible, fruto del impulso del periodista Marcos…” Source: RevenueBase Database · checked Sep 19, 2026
8	ACTÚA	Indirect evidence	Nonduermas, SpainHQ checked Sep 19, 2026	1,001-5,000	50 contacts →
	Indirect evidence “Especialistas en cuidar lo que nos rodea, con la sostenibilidad y respeto al medioambiente como gran valor.” Source: RevenueBase Database · checked Sep 19, 2026
9	Ineria Management	Partial evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	48 contacts →
	Partial 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 19, 2026
10	Transcendent	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	46 contacts →
	Indirect evidence “Transcendent es una consultora estratégica de Impacto y sostenibilidad.” Source: RevenueBase Database · checked Sep 19, 2026
11	Serviguide Consultancy	Indirect evidence	A Coruña, SpainHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “At Serviguide Consultoría, we help companies understand the context in which they operate and visualize the trends that guide their decision-making processes.” Source: RevenueBase Database · checked Sep 19, 2026
12	21gramos	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Agencia de Branding y Comunicación especializada en Sostenibilidad desde 2007.” Source: RevenueBase Database · checked Sep 19, 2026
13	Erf, Energia & Sostenibilitat - Wattega	Partial evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	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 19, 2026
14	Grupo Innova	Indirect evidence	Ontinyent, SpainHQ checked Sep 19, 2026	11-50	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 19, 2026
15	Deplan, S.L	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	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 19, 2026
16	Ibersyd Iber Sostenibilidad Y Desarrollo	Indirect evidence	Zaragoza, SpainHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “Consultora ambiental y de sostenibilidad social y económica.” Source: RevenueBase Database · checked Sep 19, 2026
17	Altácia	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Somos un socio de confianza estratégico para nuestros clientes.” Source: RevenueBase Database · checked Sep 19, 2026
18	Extrepronatur SL	Indirect evidence	Badajoz, SpainHQ checked Sep 19, 2026	11-50	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 19, 2026
19	Energy Tools	Indirect evidence	Olot, SpainHQ checked Sep 19, 2026	11-50	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 19, 2026
20	EHS Techniques	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	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 19, 2026
21	Energía Local	Indirect evidence	Barcelona, SpainHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Somos una consultora especializada en el ámbito energético y sostenibilidad.” Source: RevenueBase Database · checked Sep 19, 2026
22	Zumain Ingenieros	Indirect evidence	Madrid, SpainHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Zumain Ingenieros, inicia su andadura en el año 2002, con la intención de desarrollar su trabajo en el sector de los estudios y proyectos ambientales, con el objetivo de dar un…” Source: RevenueBase Database · checked Sep 19, 2026
23	Icatalist S.L	Indirect evidence	Las Rozas De Madrid, SpainHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence “ICATALIST is a young and innovative company founded in 2013.” Source: RevenueBase Database · checked Sep 19, 2026
24	Síntesis Y Acción	Partial evidence	Paterna, SpainHQ checked Sep 19, 2026	11-50	21 contacts →
	Partial evidence “Specialists in environmental & sustainability communications.” Source: RevenueBase Database · checked Sep 19, 2026
25	ÉTICA	Indirect evidence	Valencia, SpainHQ checked Sep 19, 2026	1-10	21 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: corporate sustainability agencies. 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 corporate sustainability agencies.
Partial evidence: Its own public description names part of corporate sustainability agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name corporate sustainability agencies. 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 490 corporate sustainability agencies based in Spain

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Corporate sustainability agencies based in Spain at a glance

As of Sep 19, 2026

12.5%Verified-email coverage

8.6Average contacts per company

1-10Median size (employees)

23.1%Largest-city concentration · Madrid

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

386

11-50

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 490 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 corporate sustainability agencies, 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 “corporate sustainability agencies”. 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 corporate sustainability agencies), 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 corporate sustainability agencies, 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, 526 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 19, 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.

Corporate sustainability agencies by metro

Corporate sustainability agencies in Madrid113
Corporate sustainability agencies in Barcelona73

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 corporate sustainability agencies, 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 corporate sustainability agencies are there based in Spain?

RevenueBase identified 490 corporate sustainability agencies 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 corporate sustainability agencies?

Madrid leads with 113 headquartered companies, followed by Barcelona (73) and Valencia (21).

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 526 verified decision-maker contacts tracked across these 490 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 19, 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.