Company lists · Data refreshed November 2026

Top 25 Cleantech startups based in Spain

RevenueBase identified 190 company matches for cleantech startups associated with Spain as of November 2026 and tracks 4,648 professional contacts across them, including 358 with verified work emails. Madrid is the largest hub.

This list covers company matches for cleantech startups 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 November 6, 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 Nov 6, 2026 How this list was built
190Companies
4,648Contacts tracked
358Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cleantech startups based in Spain

Ranked by team size
Top 25 of 190 company matches for cleantech startups based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchGranada, SpainHQ recorded Nov 6, 2026501-1,000196 contacts →

Exact match

“Greening is a global, vertically integrated renewable energy company that not only generates and markets its own green energy, but does so through a diversified portfolio of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchMadrid, SpainHQ recorded Nov 6, 202651-20072 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPolinyà, SpainHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“Customized solutions for waste valorization and emissions treatment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5055 contacts →

Exact match

“The GNERA group was created to participate in the transition towards a new energy model, assuming the dual mission of integrating new energy sources and new technology, while…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSeville, SpainHQ recorded Nov 6, 202651-20053 contacts →

Exact match

“ARENA Green Power is an independent Renewable Energy company focused in the Development, Construction and Operation of proprietary projects and also in providing turnkey…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLas Rozas De Madrid, SpainHQ recorded Nov 6, 2026201-50044 contacts →

Exact match

“We are disrupting the energy industry to change the world for better.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLucena, SpainHQ recorded Nov 6, 202611-5043 contacts →

Exact match

“En EnchufeSolar trabajamos para hacer fácil lo complejo.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchGranada, SpainHQ recorded Nov 6, 202651-20042 contacts →

Exact match

“Lidera el cambio a la energía 100% renovable.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAlbacete, SpainHQ recorded Nov 6, 202651-20040 contacts →

Exact match

“is a company focused on becoming a benchmark in energy generation and the provision of services to guarantee the sustainability of the planet.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchPozuelo De Alarcón, SpainHQ recorded Nov 6, 202611-5037 contacts →

Exact match

“Progressum was born in London in October 2012 based on values of excellence and professionalism with the aim of being a ‘Tailor Made’ company for those who wanted to develop and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchValencia, SpainHQ recorded Nov 6, 202611-5036 contacts →

Exact match

“INGENIUM GROUP is an international energy group specialized in the development and investment in renewable energy projects, with a presence in Italy, Spain, and Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSantander, SpainHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“En LoGOs Energía compartimos contigo la energía que nos mueve a buscar las mejores tarifas y soluciones energéticas.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchDerio, SpainHQ recorded Nov 6, 202651-20034 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 · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSeville, SpainHQ recorded Nov 6, 202611-5033 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Nov 6, 2026501-1,00030 contacts →

Exact match

“GreenYellow, empresa francesa fundada en 2007, se ha convertido en un actor principal en la transición energética de Francia y el extranjero, y un auténtico colaborador de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Consultora energética dedicada al desarrollo de proyectos de Eficiencia Energética y Energías Renovables.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Benbros nace con la vocación de ser líder en el sector de las energías renovables, ayudando a crear un planeta más sostenible, contribuyendo a la descarbonización del mismo…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchZaragoza, SpainHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Compañía especializada en la promoción, desarrollo, construcción y operación de proyectos de alto valor tecnológico en el campo de las energías renovables, siempre en un marco de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMadrid, SpainHQ recorded Nov 6, 202611-5021 contacts →

Exact match

“iGU Energy nace con la vocación de contribuir en la transición energética global y promover una economía descarbonizada.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDerio, SpainHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Como líderes en servicios energéticos, estamos comprometidos con mejorar la eficiencia energética, promover el autoconsumo solar fotovoltaico, fomentar la movilidad eléctrica e…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchMálaga, SpainHQ recorded Nov 6, 202611-5020 contacts →

Exact match

“Ubora es una cleantech especializada en el diseño de proyectos fotovoltaicos de alta eficiencia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchOlot, SpainHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“La energía limpia y asequible para todos es uno de los mayores desafíos de nuestro tiempo.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchBarcelona, SpainHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“Biosphere Flux es una empresa de la nueva economía, formada por jóvenes emprendedores y que está resuelta en el fomento de las tecnologías en EFICIENCIA ENERGÉTICA y en la…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchAiguaviva, SpainHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Over 20 years of experience Solventa6 is an engineering company specializing in renewable energies, founded in 2001, dedicated to providing services to businesses, individuals…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBarcelona, SpainHQ recorded Nov 6, 20261-1017 contacts →

Exact match

“3 problems > 3 driving challenges.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 190 cleantech startups based in Spain

See the full list, filter by size, metro and specialty, and access 358 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Cleantech startups based in Spain at a glance

As of Nov 6, 2026
7.7%Verified-email coverage
24.5Average contacts per company
1-10Median size (employees)
25.3%Largest-city concentration · Madrid
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
97
11-50
66
51-200
17
201-500
3
501-1,000
2
1,001-5,000
2
10001+
3

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 190 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 “cleantech startups” 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 358 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 November 6, 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.

Cleantech startups by metro

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 “cleantech startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cleantech startups are there based in Spain?

RevenueBase identified 190 company matches for cleantech startups associated with Spain as of November 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?

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

Which city has the most cleantech startups?

Madrid leads with 48 company records, followed by Barcelona (24) and Seville (9).

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 358 professional contacts with verified work emails tracked across these 190 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 190 cleantech startups based in Spain. Start with a free account, no credit card.

Download this list →

Related lists

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.