Best Energy Tech Companies in Leinster, Ireland
The 57 best Energy Tech companies in Leinster, Ireland in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: UrbanVolt.
Our analysis of 287 Energy Tech companies
$109.4b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Tech companies in Leinster
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | UrbanVolt Offers lighting as a service solutions | $81M | 14 mo ago | 33 | Declan Barrett Founder & CCO | WordPressMySQLPHP+27 | Top 10M | — | — |
| 2 | Stream BioEnergy Developer of bioenergy projects | $73M | 61 mo ago | 22 | Kevin Fitzduff Managing Director | WordPressMySQLPHP+15 | Top 10M | — | 1 partnership |
| 3 | OpenHydro Tidal energy generation systems and grid control systems | $71M | 106 mo ago | 114 | — | — | — | 450 patents Hydroelectric turbine control, blade/coils design, and modular generator array integration. | — |
| 4 | Exergyn Waste Heat to energy converter | $35M | 53 mo ago | 36 | Kevin Toole Co-Founder & CTO | WordPressMySQLPHP+9 | Top 50M | 167 patents Advanced heat‑pump and thermodynamic cycles using SMA/NTE materials for efficient heat transfer | 2 expansions |
| 5 | Modmo Manufacturer of electric bicycles | $10M | 53 mo ago | 55 | — | Cart FunctionalityShopifyPageFly+47 | Top 10M | — | — |
| 6 | Cylon Provider of multi-site building energy management systems | $10M | 144 mo ago | 100 | — | — | — | — | — |
| 7 | Zipp Mobility App-based platform offering electric kick scooter/bicycle sharing services | $9M | 48 mo ago | 13 | Charlie Gleeson Founder & CEO | — | — | — | — |
| 8 | XFuel Developer of low-carbon drop-in transport fuels from diverse waste streams | $8M | 5 mo ago | 16 | Nicholas Ball Co-Founder & CEO | WordPressMySQLPHP+27 | Top 10M | — | — |
| 9 | PrePayPower Pay-as-you-go electricity and gas retailer | $7M | 156 mo ago | 437 | Cathal Fay CEO | RubyTrixYouTube+17 | Top 500k | — | 5 job openings · 1 internship |
| 10 | AmbiSense Provider of AI-based autonomous gas monitoring technology | $6M | 58 mo ago | 20 | — | — | — | 13 patents Real-time ambient gas concentration and flow-rate sensing for air quality monitoring | — |
| 11 | MOBY App-based electric-bicycle sharing platform | $4M | 29 mo ago | 31 | Thomas O Connell Founder & CEO | WordPressMySQLPHP+45 | Top 5M | — | 1 launch |
| 12 | Esave Corporation Connected battery management solution for grid connecticvity | $4M | 133 mo ago | 3 | Peter Haydon Founder & CEO | — | — | — | — |
| 13 | SolarPrint Manufacturers dye sensitised solar cell and also supplies electrolyte | $3M | 163 mo ago | — | Mazhar Bari Co-Founder | — | — | 12 patents Dye-sensitized and indoor solar cell modules with specialized electrolytes | — |
| 14 | Wavebob WEC point absorber device | $2M | 189 mo ago | — | William Dick Founder | — | — | 44 patents Marine wave energy converters and resonance control technologies for offshore power generation | — |
| 15 | Openvolt API for smart meter data | $2M | 33 mo ago | — | Don O'Leary Co-Founder | — | — | — | — |
| 16 | VT Electron Company provides grid monitoring solutions for grid operators | $1M | 122 mo ago | 12 | Mark Bannon Founder & CEO | — | — | — | — |
| 17 | Wattics Cloud based analytics solutions for monitoring appliances and equipments | $984K | 109 mo ago | 13 | — | — | — | — | — |
| 18 | SureWash Hand hygiene training and compliance measurement | $827K | 151 mo ago | 11 | — | WordPressMySQLPHP+29 | Top 10M | — | — |
| 19 | Lightly Technologies Provider of LED light source modules | $620K | 98 mo ago | — | Brian Charman Co-Founder | — | — | — | — |
| 20 | Luna Developer of vision-based Advanced Rider Assistance Systems for powered two-wheelers | $477K | 5 mo ago | 14 | Ronan Furlong Co-Founder | WordPressMySQLPHP+12 | Top 50M | — | — |
Top 12 Energy Tech companies in Leinster
#1
Series E · Dublin, Leinster · founded 2015 · 33 employees$80.5Mraised▾
UrbanVolt provides solutions for lighting as a service. It provides LED upgrade solutions that include capital investment, complete project management, and maintenance.
- May 2025Conventional Debt$45.2M
- Aug 2023Series E$28.3M
- Oct 2022Conventional Debt$29.6M
- May 2022Series D$6.3M
#2
Series A · Dublin, Leinster · founded 2010 · 16 employees$8.5Mraised▾
Developer of low-carbon drop-in transport fuels from diverse waste streams. It transforms waste into affordable low-carbon drop-in fuels. The company also pioneers sustainable carbon-negative fuels.
- Jan 2026Series A$20.1M
- Apr 2025Grant (prize money)$8.4M
- Jul 2022Series A$8.5M
#3
Seed · Dublin, Leinster · founded 2019 · 14 employees$476.5Kraised▾
Developer of vision-based Advanced Rider Assistance Systems for powered two-wheelers. The company delivers in-ride proximity warnings and post-ride analytics. It offers camera hardware, giving OEMs options to bring ARAS to their riders. The company provides solutions to help riders learn how to maneuver in high risk scenarios, providing reaction time for riders to maneuver to safety.
- Jan 2026Seed$1.7M
- Apr 2022Grant (prize money)$54.3K
- Mar 2021Seed$476.5K
#4
Series A · Dublin, Leinster · founded 2012 · 36 employees$35.1Mraised▾
Waste Heat to energy converter. It offers a form of waste heat exchanger which helps in converting low-grade waste heat LGWH into a usable form. The technology is particularly suited to industrial applications like combined heat power, biogas, cargo shipping, and more.
- Jan 2022Series A$35M
- May 2017Grant (prize money)$2.8M
- Jun 2015Grant (prize money)$2.7M
- May 2015Grant (prize money)$2.8M
#5
Series B · Dublin, Leinster · founded 2009 · 22 employees$73.2Mraised▾
Developer of bioenergy projects
- Jun 2021Series B$73.2M
#6
Series A · Dublin, Leinster · founded 2018 · 31 employees$4.1Mraised▾
Moby is an app-based electric-bicycle sharing platform. The platform enables users to find, book, and unlock the e-bicycles near to their location. It offers features like an in-app energy consumption logger, QR code enabled unlock system, pedal-assist motor, onsite storage, charging options & more. It offers solutions for corporates & subscription-based solutions to users. At the end of the ride, users can park the vehicle at any public bike stands. Their mobile app is available for both Android & iOS devices.
- Jan 2024Series A$3.1M
- Dec 2020Seed$966.3K
#7
Acqui-Hired · Dublin, Leinster · founded 2004 · 114 employees$71.1Mraised▾
OpenHydro, a DCNS company, specializing in the design, manufacture, installation and maintenance of marine turbines generating renewable energy from tidal streams. It offers a full turn-key tidal farm service, including the supply of Open-Centre Turbines, installation using patented barge deployment system, grid connection and maintenance. It deploys turbine arrays under the surface of the oceans to produce energy silently, invisibly and with no impact on the environment. It has tidal development projects in Ireland as well as internationally – UK, France & Canada.
- Sep 2017Grant (prize money)$9.3M
- Feb 2016PE$53M
- Jan 2011Series A$18.1M
#8
Acquired · Dun Laoghaire, Leinster · founded 2019 · 13 employees$8.9Mraised▾
App-based platform offering electric kick scooter/bicycle-sharing services. It allows users to locate nearby kick-scooters using GPS, scan the QR code to unlock the vehicle, and travel to their destination. It works on a dockless sharing and free-float system. The mobile application is available for Android and iOS platforms.
- Jun 2022Conventional Debt—
- Jun 2022Series A$6.4M
- Aug 2021Seed$1.5M
- Sep 2020Angel$597.8K
#9
Seed · Dublin, Leinster · founded 2019 · 55 employees$10Mraised▾
Manufacturer of electric bicycles. The company develops various models of electric bicycles like Saigon +, Saigon S with features like 250-Watt motor, hydraulic disc brakes, 17.5Ah battery range, and more. Also, it offers assistive mobile application for users to manage bicycle at live.
- Jan 2022Angel$5.6M
- Sep 2021Seed$3.1M
- Mar 2021Seed$1.2M
#10
Seed · Dublin, Leinster · founded 2023$1.6Mraised▾
API for smart meter data. It offers solutions to leverage data to conduct energy audits, monitor ongoing energy efficiency, identify the most appropriate tariff, and better manage properties.
#11
Deadpooled · Dublin, Leinster · founded 2014 · 20 employees$5.8Mraised▾
Provider of AI-based autonomous gas monitoring technology. Ambisense provides a solar-powered autonomous monitoring system for remote monitoring of environmental parameters. These monitoring systems upload the data collected on a periodic basis to the cloud, where it is analyzed. The continuous flow of data can be used to set up alerts or downstream processes in case of any dangerous or unwanted behaviour due to emissions of gases. It is used in establishments such as landfills, oil and gas sites, water treatment facilities and other biogas facilities.
- Aug 2021Series A$3.5M
- Jun 2019Seed$1.2M
- Apr 2017Seed$1.1M
#12
Acqui-Hired · Dublin, Leinster · founded 1985 · 100 employees$9.6Mraised▾
Cylon provides integrated building energy management systems. It designs hardware and software solutions to control, monitor and maintain building environment, maintaining occupant comfort, and more. The company offers 'Cylon Active Energy' - a SaaS-based building energy monitoring system that provides real-time information on energy usage and consumption in a building. Additionally, it also offers energy management tools with features such as charting, analysis, reports, monitoring & alarms, data collection, branding, and more. The company also collects data form wired & wireless sensors.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · 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.