Company lists · Data verified August 2026
Top 25 Energy efficiency investment firms based in Spain
There are 225 energy efficiency investment firms headquartered in Spain (RevenueBase, August 2026). RevenueBase tracks 1,307 professional contacts across them, including 112 with verified work emails and 14 with mobile numbers. Madrid is the largest hub.
This list covers energy efficiency investment 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.
The 25 largest energy efficiency investment firms based in Spain
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 | 7 | |
| 2 | 1 | |
| 3 | 11 | |
| 4 | Sinceo2 Consultoria Energética | 1 |
| 5 | 7 | |
| 6 | 5 | |
| 7 | ZULUX | 3 |
| 8 | 2 | |
| 9 | 10 | |
| 10 | 5 | |
| 11 | 3 | |
| 12 | 1 | |
| 13 | Gen0 | 3 |
| 14 | 2 | |
| 15 | 3 | |
| 16 | 2 | |
| 17 | 1 | |
| 18 | 2 | |
| 19 | 1 | |
| 20 | 5 | |
| 21 | 2 | |
| 22 | 1 | |
| 23 | 3 | |
| 24 | 2 | |
| 25 | 2 |
Showing 25 of 225 energy efficiency investment firms based in Spain
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Energy efficiency investment firms based in Spain at a glance
As of Aug 28, 2026Companies by employee count
Energy efficiency investment firms by metro
| Metro | Companies |
|---|---|
| Energy efficiency investment firms in Madrid | 49 |
| Energy efficiency investment firms in Barcelona | 27 |
| Energy efficiency investment firms in Valencia | 10 |
| Energy efficiency investment firms in Sevilla | 6 |
| Energy efficiency investment firms in Zaragoza | 4 |
| Energy efficiency investment firms in Valladolid | 4 |
| Energy efficiency investment firms in Malaga | 3 |
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 “energy efficiency investment 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 energy efficiency investment firms are there based in Spain?
There are 225 energy efficiency investment firms headquartered in Spain as of August 2026 (RevenueBase).
What is the largest company on this list?
Bettergy, headquartered in Malaga, tops this list with the largest team on record.
Which city has the most energy efficiency investment firms?
Madrid leads with 49 headquartered companies, followed by Barcelona (27) and Valencia (10).
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 112 verified decision-maker contacts tracked across these 225 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.
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