Company lists · Data refreshed September 2026

Top 21 Renewable energy investment firms based in Spain

RevenueBase identified 446 renewable energy investment firms headquartered in Spain as of September 2026 and tracks 14,927 professional contacts across them, including 2,536 with verified work emails and 515 with mobile numbers. Madrid is the largest hub.

This list covers renewable energy investment firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
446Companies
14,927Contacts tracked
2,536Verified emails
515Mobile numbers
Explore all 446 companies → Free signup · no credit card · 500 free credits

The 21 largest renewable energy investment firms based in Spain

Ranked by team size
Top 21 of 446 renewable energy investment firms based in Spain, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names renewable energy investment firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
ZelestraIndirect evidence
SpainHQ checked Sep 5, 2026501-1,000929

“At Zelestra, we are on a mission to change the world by making decarbonization a reality for our partners.”

Source: company website · checked Sep 5, 2026
2
GrenergyPartial evidence
Madrid, SpainHQ checked Sep 5, 2026501-1,000699

“The on-demand energy producer empowering ever-changing lives Grenergy is a Spanish multinational clean energy producer.”

Source: company website · checked Sep 5, 2026
3
IGNISPartial evidence
Madrid, SpainHQ checked Sep 5, 2026501-1,000533

“We are a vertically integrated energy company and offer tailored solutions for large consumers and for new energy demands, such as data centers.”

Source: company website · checked Sep 5, 2026
4
X-ElioStrong evidence
Madrid, SpainHQ checked Sep 5, 2026201-500466

“X-ELIO: global leader in the development of renewable energy projects.”

Source: company website · checked Sep 5, 2026
5Madrid, SpainHQ checked Sep 5, 2026201-500339

“We are world leaders in providing comprehensive renewable energy solutions.”

Source: company website · checked Sep 5, 2026
6Madrid, SpainHQ checked Sep 5, 202651-200305

“Solaria Energía y Medio Ambiente is a company dedicated to selling carbon free energy generated by its solar plants.”

Source: company website · checked Sep 5, 2026
7
OpdenergyIndirect evidence
Madrid, SpainHQ checked Sep 5, 2026201-500230

“Opdenergy is an Independent Power Producer (IPP) with more than 20 years of experience, operating in Europe, the United States, and Latin America.”

Source: company website · checked Sep 5, 2026
8
RIC Energy GroupStrong evidence
Madrid, SpainHQ checked Sep 5, 2026201-500216

“At RIC Energy, we aspire to change the trajectory of renewable energy and energy efficiency.”

Source: company website · checked Sep 5, 2026
9
ID Energy GroupStrong evidence
Ciudad Real, SpainHQ checked Sep 5, 2026201-500210

“ID Energy Group is an international corporate group that is dedicated to renewable energy and specialised in solar photovoltaic energy.”

Source: company website · checked Sep 5, 2026
10
Enerside EnergyPartial evidence
Barcelona, SpainHQ checked Sep 5, 202651-200205

Enerside is a fast-growing, fully integrated solar photovoltaic platform with a global presence and headquarters in Barcelona, Spain.”

Source: company website · checked Sep 5, 2026
11
Exus RenewablesStrong evidence
Madrid, SpainHQ checked Sep 5, 202651-200193

“Exus Renewables Europe is an Energy Solutions Provider active across the full energy value chain, from development and construction to ownership, operations, and third-party asset…”

Source: company website · checked Sep 5, 2026
12
Elawan EnergyPartial evidence
Madrid, SpainHQ checked Sep 5, 2026201-500189

“With more than 200 employees and a growing workforce, Elawan Energy provides integrated solutions across the clean energy lifecycle, from the promotion, development, and…”

Source: company website · checked Sep 5, 2026
13
GreeningStrong evidence
Granada, SpainHQ checked Sep 5, 2026501-1,000175

“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…”

Source: company website · checked Sep 5, 2026
14
Cansol Energy SolutionsPartial evidence
Granada, SpainHQ checked Sep 5, 202651-200151

“CANSOL ENERGY SOLUTIONS, construyendo un futuro sostenible.”

Source: company website · checked Sep 5, 2026
15
Matrix RenewablesStrong evidence
Madrid, SpainHQ checked Sep 5, 202651-200147

“Matrix Renewables is a global renewable energy platform created and backed by global alternative asset manager TPG and its $31 billion impact-investing platform.”

Source: company website · checked Sep 5, 2026
16
BNZStrong evidence
Barcelona, SpainHQ checked Sep 5, 202611-50131

“BNZ is an independent power producer (IPP) that develops, builds, and operates renewable energy projects in Europe, particularly in Portugal, Italy, and Spain.”

Source: company website · checked Sep 5, 2026
17
EcoenerPartial evidence
La Coruña, SpainHQ checked Sep 5, 202651-200128

“Ecoener es una multinacional española especializada en energía renovables, con 37 años de experiencia en el desarrollo de proyectos que buscan una perfecta integración ambiental y…”

Source: company website · checked Sep 5, 2026
18
Plenium PartnersPartial evidence
Madrid, SpainHQ checked Sep 5, 2026201-500124

“Founded in 2007, Plenium Partners is an investment company focused on power and sustainable infrastructure in Europe More than 7.5Bn invested to date,+300 employees, 5 countries…”

Source: company website · checked Sep 5, 2026
19
Ríos RenovablesPartial evidence
Fustiñana, SpainHQ checked Sep 5, 2026201-50095

“RÍOS Renovables Group es un grupo empresarial consolidado en el mercado de las energías renovables.”

Source: company website · checked Sep 5, 2026
20
Grupo ZaragozáIndirect evidence
Valencia, SpainHQ checked Sep 5, 202651-20088

“We have history, we’re present, creating future” Zaragozá Group is a group that has grown and adapted to the business opportunities that have arisen.”

Source: company website · checked Sep 5, 2026
21
Greenalia S.AStrong evidence
A Coruña, SpainHQ checked Sep 5, 202651-20087

“Greenalia is an independent renewable energy producer.”

Source: company website · checked Sep 5, 2026

Showing 21 of 446 renewable energy investment firms based in Spain

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Renewable energy investment firms based in Spain at a glance

As of Sep 5, 2026
11-50Median size (employees)
MadridLargest hub · 132 HQs
515Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
187
11-50
165
51-200
57
201-500
22
501-1,000
9
1,001-5,000
2
5,001-10,000
1
10001+
2

Verified emails by last verification

0–30
2,345
31–60
187
61–90
1
90–180
0
180+
3

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 renewable energy investment firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Spain whose own description of what they do matches “renewable energy investment firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among renewable energy investment firms, 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 an evidence 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, 2,536 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 5, 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.

Renewable energy investment firms by metro

  • Renewable energy investment firms in Madrid132

Frequently asked

How many renewable energy investment firms are there based in Spain?

RevenueBase identified 446 renewable energy investment firms 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?

Zelestra, headquartered in Spain, tops this list with the largest team on record.

Which city has the most renewable energy investment firms?

Madrid leads with 132 headquartered companies, followed by Barcelona (23) and Sevilla (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 2,536 verified decision-maker contacts tracked across these 446 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 5, 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.