Company lists · Data refreshed September 2026

Top 24 Sustainable IT consulting firms based in Barcelona, Spain

Name: Sustainable IT consulting firms based in Barcelona, Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 64 companies tracked

RevenueBase identified 64 sustainable IT consulting firms headquartered in Barcelona, Spain as of September 2026 and tracks 492 professional contacts across them, including 69 with verified work emails and 7 with mobile numbers. Madrid is the largest hub.

This list covers sustainable IT consulting firms headquartered in Barcelona, 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 13, 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 13, 2026 86% judged on-target in blind review

64Companies

492Contacts tracked

69Verified emails

7Mobile numbers

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The 24 largest sustainable IT consulting firms based in Barcelona, Spain

Ranked by team size

Top 24 of 64 sustainable IT consulting firms based in Barcelona, Spain, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable IT 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	Sm, Sistemas Medioambientales, SL	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	201-500	174 contacts →
	Indirect evidence “Impulsamos la sostenibilidad empresarial con soluciones técnicas y reales.” Source: RevenueBase Database · checked Sep 13, 2026
2	Signature Management Consultants	Partial evidence	Barcelona, SpainHQ checked Sep 13, 2026	11-50	45 contacts →
	Partial evidence “Signature is a cross industry management and strategy consulting boutique.” Source: RevenueBase Database · checked Sep 13, 2026
3	Erf, Energia & Sostenibilitat - Wattega	Strong evidence	Barcelona, SpainHQ checked Sep 13, 2026	11-50	33 contacts →
	Strong 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 13, 2026
4	Deplan, S.L	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 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 13, 2026
5	Energía Local	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	11-50	27 contacts →
	Indirect evidence “Somos una consultora especializada en el ámbito energético y sostenibilidad.” Source: RevenueBase Database · checked Sep 13, 2026
6	Worsley Acceleration Services	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	16 contacts →
	Indirect evidence “WORSLEY Acceleration Services is a consultancy boutique with a highly experienced team of professionals, focused on bringing disruptive solutions to lay the foundation for current…” Source: RevenueBase Database · checked Sep 13, 2026
7	Greenflex España	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	501-1,000	12 contacts →
	Indirect evidence “Desde 2009, GreenFlex es el socio clave en la transformación energética, medioambiental y social de las organizaciones, permitiéndoles cambiar su trayectoria hacia una economía…” Source: RevenueBase Database · checked Sep 13, 2026
8	Energy Aware Solutions S.L. EAS	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	8 contacts →
	Indirect evidence “EAS offers a whole range of solutions for data center energy optimization to reduce cost and be eco-responsible EAS provides installation, configuration and support of the EAR…” Source: RevenueBase Database · checked Sep 13, 2026
9	Ferdinand Consultants	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	7 contacts →
	Indirect evidence “Ferdinand Consultants are thought leaders in creating a positive impact.” Source: RevenueBase Database · checked Sep 13, 2026
10	Envolta Energia	Partial evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	6 contacts →
	Partial evidence “We are a services company focused on sustainability and on fighting climate change.” Source: RevenueBase Database · checked Sep 13, 2026
11	Visión Circular	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	6 contacts →
	Indirect evidence “Potenciamos la sostenibilidad de tu proyecto en el marco de los ODS.” Source: RevenueBase Database · checked Sep 13, 2026
12	Honu Projects	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	6 contacts →
	Indirect evidence “HONU PROJECTS es una consultoría especializada en sostenibilidad turística, donde ayudamos a las empresas a identicar su posición actual en términos de sostenibilidad, ponemos en…” Source: RevenueBase Database · checked Sep 13, 2026
13	Reference Consulting	Strong evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	6 contacts →
	Strong evidence “At Reference Consulting, we are dedicated to transforming organizations worldwide into more sustainable, efficient, human-centered, and prosperous entities.” Source: RevenueBase Database · checked Sep 13, 2026
14	Green Living Projects	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	5 contacts →
	Indirect evidence “Consultoría, formación e investigación para transformar el entorno construido con sostenibilidad integral y enfoque regenerativo.” Source: RevenueBase Database · checked Sep 13, 2026
15	TE LO Sirvo Verde	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	4 contacts →
	Indirect evidence “La necesidad de cambiar sector de la restauración ya es innegable.” Source: RevenueBase Database · checked Sep 13, 2026
16	Mirihi	Strong evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	4 contacts →
	Strong evidence “At Mirihi we Transform Your Business with Innovative Consulting and Distribution Solutions that prioritize Sustainability.” Source: RevenueBase Database · checked Sep 13, 2026
17	Rozo Ibérica	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	51-200	3 contacts →
	Indirect evidence “Empresa consultora en eficiencia energética desde 2010, ROZO apoya a sus clientes a largo plazo para reducir de forma durable sus costes energéticos y su huella medioambiental.” Source: RevenueBase Database · checked Sep 13, 2026
18	Energreen Design	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	3 contacts →
	Indirect evidence “Energreen Design es una actividad de consultoría y divulgación en ámbito de construcción sostenible, reforma de edificios, diseño pasivo, eficiencia energética y economía circular.” Source: RevenueBase Database · checked Sep 13, 2026
19	Genéthico	Partial evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	2 contacts →
	Partial evidence “Consultancy specialized in Business Ethics and Sustainable Development.” Source: RevenueBase Database · checked Sep 13, 2026
20	Ecoarq	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	1 contacts →
	Indirect evidence “Comprometidos con el diseño ecológico y económicamente sostenible.” Source: RevenueBase Database · checked Sep 13, 2026
21	Planet Fair Play	Partial evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “In Planet Fair Play we aim to help companies, entities and individuals to identify, implement and develop strategies in the field of sustainability.” Source: RevenueBase Database · checked Sep 13, 2026
22	Circular Compliance	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	1 contacts →
	Indirect evidence “At Circular Compliance we are more than just a service provider.” Source: RevenueBase Database · checked Sep 13, 2026
23	Responsablia	Indirect evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	1 contacts →
	Indirect evidence “RESPONSABLIA se constituye como una “Consultoría de Sostenibilidad”.” Source: RevenueBase Database · checked Sep 13, 2026
24	Natural Strategies	Partial evidence	Barcelona, SpainHQ checked Sep 13, 2026	1-10	1 contacts →
	Partial evidence “We are a team of international consultants that champions climate - and nature-friendly business transformations, blending environmental, social, and economic sustainability.” Source: RevenueBase Database · checked Sep 13, 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: sustainable IT 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 sustainable IT consulting firms.
Partial evidence: Its own public description names part of sustainable IT consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable IT 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 24 of 64 sustainable IT consulting firms based in Barcelona, Spain

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Sustainable IT consulting firms based in Barcelona, Spain at a glance

As of Sep 13, 2026

14.0%Verified-email coverage

1.4%Mobile-number coverage

7.7Average contacts per company

1-10Median size (employees)

153.1%Largest-city concentration · Madrid

Sep 13, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

590–30

931–60

061–90

090–180

1180+

Company record updated

Median 68.0d

00–30

21631–60

19261–90

6090–180

24180+

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 sustainable IT 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 Barcelona, Spain whose own description of what they do matches “sustainable IT 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 sustainable IT 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 sustainable IT consulting firms, and records with no verified work email. Companies headquartered outside Barcelona 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, 69 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 13, 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.

Sustainable IT consulting firms by metro in Spain

Sustainable IT consulting firms in Madrid98
Sustainable IT consulting firms in Barcelona64

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 sustainable IT 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 sustainable IT consulting firms are there based in Barcelona, Spain?

RevenueBase identified 64 sustainable IT consulting firms headquartered in Barcelona, 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?

Sm, Sistemas Medioambientales, SL, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most sustainable IT consulting firms?

Madrid leads with 98 headquartered companies, followed by Barcelona (64) and Sevilla (17).

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 69 verified decision-maker contacts tracked across these 64 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 13, 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.