Company lists · Data refreshed September 2026
Top 25 Green energy investment firms based in Ireland
RevenueBase identified 51 green energy investment firms headquartered in Ireland as of September 2026 and tracks 2,438 professional contacts across them, including 483 with verified work emails and 110 with mobile numbers. Dublin is the largest hub.
This list covers green energy investment firms headquartered in Ireland, 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 3, 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.
The 25 largest green energy investment firms based in Ireland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 605 | ||||
“Energia is proud to be the longest supplier of 100% green electricity on the island of Ireland.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 100 | ||||
“ElectroRoute is an international, renewables focused, energy trading and services company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | NTR PLCPartial evidence | 60 | |||
“Established in 1978, NTR is an experienced sustainable infrastructure investor and asset manager driving Europe’s clean energy transition.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 48 | ||||
“At BNRG, partnerships are paramount.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | Power Capital Renewable EnergyPartial evidence | 47 | |||
“At Power Capital Renewable Energy we are driven by our purpose to contribute to the regeneration of our planet and its people.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | UrbanvoltPartial evidence | 27 | |||
“UrbanVolt is a global leader in financing decarbonised solutions for businesses, helping companies achieve their sustainability goals through innovative energy solutions.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 23 | ||||
“Head quartered in Buttevant, Co.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 14 | ||||
“Over the past six years, Arena Capital Partners Limited (“Arena”) have become a dominant player in the small to mid-scale wind market in Europe.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 14 | ||||
“We are your Energy Saving Net-Zero Partner At Copper Coast Renewables, we offer world class energy savings to your business through innovative green technologies such as Solar PV…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 | ||||
“Revolutionising the landscape of the energy sector Investing in sustainable digitally enabled infrastructure” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 13 | ||||
“Greensource is an Irish renewable energy group that focuses on sustainable power generation.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | Solarstream LimitedStrong evidence | 12 | |||
“Solarstream is dedicated to protecting your renewable energy and solar panel investment and looks always to improve on your energy costs and your lifestyle.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 | ||||
“Highfield Energy develop electricity generation projects with a particular focus on renewables.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | Rengen PowerPartial evidence | 10 | |||
“Rengen Power is passionate about providing non-polluting renewable energy for a more sustainable future.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 | ||||
“We are a renewables and environment company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 | ||||
“Founded by Lindsay Nagle, Infinitum Energy is a leader in the global transition to renewable energy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | Method Capital LimitedIndirect evidence | 5 | |||
“Method Capital fills a finance gap when deploying climate and sustainability solutions that are gaining early traction.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | Solar 21Partial evidence | 4 | |||
“Solar 21 develops renewable energy power plants in the UK and Italy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 | ||||
“Your Power is our Priority.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | Randridge TechnologiesStrong evidence | 4 | |||
“Our mission is to contribute to the environmental protection of our planet by utilising green energy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | Stakelum ConsultancyPartial evidence | 3 | |||
“Stakelum Consultancy is a boutique corporate finance advisory firm providing services to renewable energy clients.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 | ||||
“Greencoat Renewables PLC is an investor in euro-denominated renewable energy infrastructure assets with a portfolio of more than 1,495.9MW of generation capacity.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | NetzeroenergyIndirect evidence | 2 | |||
“Ireland has a target to reach 80% renewable electricity by 2030 using wind and solar.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | Mitrossolar LTDPartial evidence | 2 | |||
“Empowering a sustainable future with renewable energy” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | Sinoclix EnergyPartial evidence | 2 | |||
“Sinoclix Energy is a leading force in the renewable energy sector in Europe, serving as a key investor, developer, and asset manager.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 51 green energy investment firms based in Ireland
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Green energy investment firms based in Ireland at a glance
As of Sep 3, 2026Companies by employee count
Verified emails by last verification
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 green 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 Ireland whose own description of what they do matches “green 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 green energy investment firms, and records with no verified work email. Companies headquartered outside Ireland 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, 483 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 3, 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.
Frequently asked
How many green energy investment firms are there based in Ireland?
RevenueBase identified 51 green energy investment firms headquartered in Ireland 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?
Energia, headquartered in Cork, tops this list with the largest team on record.
Which city has the most green energy investment firms?
Dublin leads with 16 headquartered companies, followed by Cork (2) and Cavan (1).
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 483 verified decision-maker contacts tracked across these 51 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 3, 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.
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