Best Energy Companies in Leinster, Ireland
The 65 best Energy companies in Leinster, Ireland in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Mainstream Renewable Power.
Our analysis of 441 Energy companies
$135.1b in tracked funding; 76% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in Leinster
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | AEI Provider of installation of solar PV panels, energy systems, heat pumps, and other related products | — | — | — | Steven Bray Founder & Managing Director | WordPressMySQLRedis+30 | Top 5M | — | — |
| 2 | Airtricity Wind energy operator | — | — | — | Stephen Wheeler Managing Director & CEO | — | — | 4 patents Renewable energy production forecasting and grid integration strategy optimization | — |
| 3 | Alchemy Utilities Developer of residential and commercial properties | — | — | — | Richard Griffin Founder & CEO | — | — | — | — |
| 4 | Ashdown Controls Provider of world class products with local support for the HVAC industry, offering services throughout all… | — | — | — | — | — | — | — | 1 partnership |
| 5 | Astatine Provider of solar PV, roof top, and mounted systems | — | — | 18 | — | WordPress Site EditorWordPressMySQL+12 | Top 10M | — | 2 job openings |
| 6 | Blue Power Energy Power take-off units for wave energy manufacturer | — | — | — | Conor Haughey Co-Founder & CEO | — | — | 3 patents Wave energy conversion devices for extracting power from ocean surface waves | — |
| 7 | Codling Wind Park Developer of solar and wind energy projects | — | — | 32 | — | WordPressMySQLPHP+11 | Top 10M | — | 1 expansion |
| 8 | DCC LPG LPG, propane & butane distribution company | — | — | — | Henry Cubbon CEO & MD | — | — | — | — |
Top 12 Energy companies in Leinster
#1
Series B · Dublin, Leinster · founded 2020 · 13 employees$15Mraised▾
Developer of wind energy projects
- Jul 2025Series B$1.7M
- May 2025Conventional Debt$2.3M
- Nov 2024Series B$12.1M
- Mar 2022Series A$1.5M
#2
Series A · Dublin, Leinster · founded 2018 · 52 employees$39Mraised▾
Developer of wind energy projects
- Oct 2024Series A$8.8M
- Apr 2023Series A$15.4M
- May 2022Series A$14.8M
- Jan 2021Seed—
#3
Series B · Dublin, Leinster · founded 2022$16.7Mraised▾
Circal is a developer of solar and co-located energy storage projects in Ireland and the US, specializing in site discovery and development. The company's focus is on delivering renewable energy solutions that work for everyone, with a track record of commercially successful projects.
- Sep 2024Series B$16.7M
#4
Acquired · Dublin, Leinster · founded 2008 · 650 employees$758.7Mraised▾
Developer wind and solar energy plants
- Sep 2022Conventional Debt$290M
- Mar 2022Series C$633M
- Sep 2020Conventional Debt$620M
- Nov 2019Conventional Debt$580M
#5
Public · Dublin, Leinster · founded 2015 · 7 employees$10.9Mraised▾
United Oil & Gas is an oil & gas exploration and production company. Has a focus on onshore exploration and production. Operational in Wessex Basin, UK, and Podere Gallina in the Po Valley region of onshore Italy, as of Feb'18. Planning to start redevelopment well project in the Italian Podere Gallina. Acquired Senterra Energy in July 2017.
- Feb 2024Post IPO$1.3M
- Sep 2018Post IPO$3.9M
- May 2018Post IPO$3.6M
- Oct 2017Post IPO$2.1M
#6
Series D · Dublin, Leinster · founded 2021 · 20 employees$250Mraised▾
Developer of wind and solar energy projects
- Apr 2022Series D$250M
#7
Series B · Dublin, Leinster · founded 2009 · 22 employees$73.2Mraised▾
Developer of bioenergy projects
- Jun 2021Series B$73.2M
#8
Seed · Dublin, Leinster · founded 2007 · 50 employees$9.1Mraised▾
BNRG Renewables is a renewable energy project developer, based in Dublin, Ireland which develops, constructs, owns and operates utility-scale solar projects across the globe. Projects include 15MW Bilsham solar farm in the UK, 20MW Sycamore solar farm in the UK and 6MW solar power project in Kamenar, Bulgaria.
- Dec 2022Conventional Debt$9M
- May 2022Seed—
- May 2022Conventional Debt—
- Feb 2015Grant (prize money)$100.9K
#9
Public · Dublin, Leinster · founded 1995 · 16 employees$44.3Mraised▾
Developer of oil and gas assets in Africa. This company focuses on securing and developing high-potential oil and gas asset opportunities. Its strategy centers on achieving production and near-term operating cash flow to generate shareholder value. The company leverages its technical expertise, operational capabilities, and industry contacts to build strong relationships with governments, partners, and local communities. The core of its operations involves the exploration and development of oil and gas resources.
#10
Public · Dublin, Leinster · founded 2003$7Mraised▾
Explorer and developer of lithium and oil & gas resources. This company appraises and explores existing assets while actively seeking additional license interests in these sectors. The company engages in discussions with relevant state-owned companies and authorities to facilitate exploration and development projects. Risk management is a key focus, with regular board reviews to mitigate potential challenges inherent in the industry. The company maintains a commitment to corporate social responsibility, prioritizing safety and environmental considerations.
- May 2021Post IPO$695.2K
- Sep 2018Post IPO$582K
- Sep 2016Post IPO$520.2K
- Oct 2014Post IPO$798.5K
#11
Funding Raised · Dublin, Leinster · founded 2003 · 792 employees$4.3Mraised▾
Electricity transmission and distribution company
- Apr 2019Grant (prize money)—
- Jan 2019Grant (prize money)$382.5K
- Nov 2018Grant (prize money)$282.5K
- Jan 2018Grant (prize money)$298.3K
#12
Deadpooled · Dublin, Leinster · founded 2009$9Mraised▾
Biotricity is a specialized designer and manufacturer of small-scale horizontal axis wind turbine systems to meet the electrical needs of domestic and commercial clients. Manufactured "Biotricity BH" series wind turbines with power generating capacities 2kW, 3kW, 5kW, 10kW, and 20kW. Also, developed first vertical axis wind turbine systems in August 2009 which was claimed to be deployed in West Cork.
- Dec 2017Post IPO$2.5M
- Aug 2017Post IPO$6.5M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding flat · growth flat
How research on Grid Energy Storage is moving in Ireland
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 190 Ireland-affiliated papers.
- University of Limerick34
- University College Cork33
- University College Dublin33
- Trinity College Dublin21
- Advanced Materials and BioEngineering Research15
- Electrode1→8
- Battery (electricity)1→19
- Supercapacitor1→16
- Photovoltaic system1→13
- Thermal energy storage1→11
- Wind power1→8
- Renewable energy6
- Environmental economics6
- Nanotechnology5
- Electronics4
- Battery (electricity)4
Where energy storage is researched across Ireland
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.