Company lists · Data verified August 2026

Top 25 Esg consulting firms based in Spain

Name: Esg consulting firms based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 609 companies tracked

There are 609 esg consulting firms headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 27,538 professional contacts across them, including 562 with verified work emails and 770 with mobile numbers. Madrid is the largest hub.

This list covers esg consulting firms headquartered in Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

609Companies

27,538Contacts tracked

562Verified emails

770Mobile numbers

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The 25 largest esg consulting firms based in Spain

Ranked by team size

Top 25 of 609 esg consulting firms based in Spain, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Autonomo	Cordoba	n/a	23,114	23
2	Anthesis ESP	Manlleu	201-500	333	75
3	Valora Consultores	A Coruna	51-200	238	41
4	Sm, Sistemas Medioambientales, SL	Barcelona	201-500	174	2
5	Ethifinance	Madrid	51-200	132	53
6	Sygris	San Sebastian De Los Reyes	51-200	77	15
7	Taxus Medio Ambiente	Oviedo	51-200	69	1
8	Tandem Social	Barcelona	11-50	63	14
9	Ineria Management	Madrid	11-50	48	8
10	G-Advisory	Madrid	11-50	44	6
11	Serviguide Consultancy	A Coruna	51-200	41	2
12	Esolve. Environmental Consulting And Engineering	Madrid	11-50	34	6
13	Dogood	Barcelona	11-50	30	5
14	Altácia	Madrid	11-50	30	1
15	Ibersyd Iber Sostenibilidad Y Desarrollo	Zaragoza	11-50	30	1
16	Indice Formación Y Consultoría	Molina De Segura Murcia	11-50	29	3
17	Extrepronatur SL	Badajoz	11-50	29	1
18	EHS Techniques	Madrid	11-50	28	9
19	Energy Tools	Terrassa	11-50	28	8
20	Energía Local	Barcelona	11-50	27	10
21	Ecoterrae	Sevilla	11-50	26	1
22	BMASI	Bilbao	11-50	22	4
23	Premea	Valencia	11-50	19	2
24	Green Globe Sostenibilidad Y Proyectos Ambientales	Sevilla	11-50	19	2
25	Grunver Sostenibilidad	Las Arenas	11-50	14	1

Showing 25 of 609 esg consulting firms based in Spain

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Esg consulting firms based in Spain at a glance

As of Aug 28, 2026

1-10Median size (employees)

MadridLargest hub · 135 HQs

770Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

471

11-50

117

51-200

201-500

501-1,000

Esg consulting firms by metro

Metro	Companies
Esg consulting firms in Madrid	135
Esg consulting firms in Barcelona	81
Esg consulting firms in Valencia	27
Esg consulting firms in Sevilla	21
Esg consulting firms in Malaga	17
Esg consulting firms in Zaragoza	11
Esg consulting firms in A Coruna	11

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “esg consulting firms”, with match quality audited by blind human judging, and headquartered in Spain.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many esg consulting firms are there based in Spain?

There are 609 esg consulting firms headquartered in Spain as of August 2026 (RevenueBase).

What is the largest company on this list?

Autonomo, headquartered in Cordoba, tops this list with the largest team on record.

Which city has the most esg consulting firms?

Madrid leads with 135 headquartered companies, followed by Barcelona (81) and Valencia (27).

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 562 verified decision-maker contacts tracked across these 609 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.