Company lists · Data refreshed September 2026

Top 25 Net zero transition advisors based in Spain

RevenueBase identified 165 company matches for net zero transition advisors associated with Spain as of September 2026 and tracks 1,386 professional contacts across them, including 213 with verified work emails. Madrid is the largest hub.

This list covers company matches for net zero transition advisors associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
165Companies
1,386Contacts tracked
213Verified emails
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The 25 largest net zero transition advisors based in Spain

Ranked by team size
Top 25 of 165 company matches for net zero transition advisors based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMadrid, SpainHQ recorded Sep 20, 202651-200152 contacts →

Exact match

“MAI has been in international consultancy for over 25 years driving energy and environmental project around the world, helping to design and plan reliable supply systems based on…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Sep 20, 202651-20060 contacts →

Exact match

“Helping investors and energy companies maximise renewable asset performance while keeping risk under control.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchValencia/valència, SpainHQ recorded Sep 20, 202651-20058 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Sep 20, 202611-5046 contacts →

Exact match

“Transcendent es una consultora estratégica de Impacto y sostenibilidad.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchDerio, SpainHQ recorded Sep 20, 202651-20030 contacts →

Exact match

“Somos una ingeniería y consultora especializada en eficiencia, gestión y transformación energética para empresas, con un enfoque técnico, integral y orientado a resultados.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchZaragoza, SpainHQ recorded Sep 20, 202611-5030 contacts →

Exact match

“Consultora ambiental y de sostenibilidad social y económica.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchOlot, SpainHQ recorded Sep 20, 202611-5028 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchBarcelona, SpainHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“Somos una consultora especializada en el ámbito energético y sostenibilidad.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchGranada, SpainHQ recorded Sep 20, 202611-5027 contacts →

Exact match

“We offer companies efficient solutions with the best consulting and engineering services in: Energy Management Energy certification and qualification of buildings Energy…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchSeville, SpainHQ recorded Sep 20, 202611-5025 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLas Rozas De Madrid, SpainHQ recorded Sep 20, 202611-5024 contacts →

Exact match

“ICATALIST is a young and innovative company founded in 2013.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchSeville, SpainHQ recorded Sep 20, 202611-5021 contacts →

Exact match

“The Energy Transition is exciting.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchMadrid, SpainHQ recorded Sep 20, 202611-5019 contacts →

Exact match

“An Iberdrola company that is developing high-impact Nature-Based-Solution (NBS) projects that reduce the global carbon footprint, improve biodiversity, and promote a sustainable…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchMadrid, SpainHQ recorded Sep 20, 202611-5018 contacts →

Exact match

“Kira Ventures is an advisory, development and asset management firm that identifies and accelerates new investment opportunities in the transition to a new economic model driven…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Sep 20, 20261-1015 contacts →

Exact match

“Neyen is an international advisory firm working to accelerate a just transition to a low carbon climate resilient future.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchMadrid, SpainHQ recorded Sep 20, 20261-1014 contacts →

Exact match

“Climate change is an urgent reality, threatening lives, livelihoods, and future prosperity.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchBarcelona, SpainHQ recorded Sep 20, 2026501-1,00012 contacts →

Exact match

“Desde 2009, GreenFlex es el socio clave en la transformación energética, medioambiental y social de las organizaciones, permitiéndoles cambiar su trayectoria hacia una economía…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchMadrid, SpainHQ recorded Sep 20, 202611-509 contacts →

Exact match

“Ingenature | Sostenibilidad estratégica para real estate En Ingenature ayudamos a promotores e inversores a financiar, reducir riesgos y aumentar el valor de sus activos mediante…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchAlicante, SpainHQ recorded Sep 20, 20261-108 contacts →

Exact match

“TRESERRES nace para mejorar el medioambiente a través del asesoramiento a las empresas.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchBarcelona, SpainHQ recorded Sep 20, 20261-107 contacts →

Exact match

“Ferdinand Consultants are thought leaders in creating a positive impact.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchBarcelona, SpainHQ recorded Sep 20, 20261-106 contacts →

Exact match

“We are a services company focused on sustainability and on fighting climate change.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchMadrid, SpainHQ recorded Sep 20, 20261-106 contacts →

Exact match

“Siembra Energía Social es una consultora especializada en gestión social de proyectos de energías renovables e industriales.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchBurgos, SpainHQ recorded Sep 20, 20261-105 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchMadrid, SpainHQ recorded Sep 20, 20261-105 contacts →

Exact match

“Consultoría energética especializada en energías renovables y soluciones de mejora energética.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchO Porriño, SpainHQ recorded Sep 20, 2026201-5005 contacts →

Exact match

“HEAD UP SERVICES is a management consulting company based out of Barrio San Andrés Pontellas, 20 36412 Porriño comercial@headup.es -”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 165 net zero transition advisors based in Spain

See the full list, filter by size, metro and specialty, and access 213 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Net zero transition advisors based in Spain at a glance

As of Sep 20, 2026
15.4%Verified-email coverage
8.4Average contacts per company
1-10Median size (employees)
32.1%Largest-city concentration · Madrid
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
112
11-50
39
51-200
11
201-500
1
501-1,000
1
1,001-5,000
1

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 165 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “net zero transition advisors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 213 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “net zero transition advisors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many net zero transition advisors are there based in Spain?

RevenueBase identified 165 company matches for net zero transition advisors associated with Spain as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

MAI Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most net zero transition advisors?

Madrid leads with 53 company records, followed by Barcelona (22) and Zaragoza (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 213 professional contacts with verified work emails tracked across these 165 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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 SmartSearch, 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.