Best Energy Tech Companies in Ireland
The 125 best Energy Tech companies in Ireland in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: UrbanVolt.
Ireland's Energy Tech scene has 125 companies and $470M in disclosed funding behind it, and if you're trying to find where the real capital is concentrated, this directory ranks them by exactly that. UrbanVolt leads the pack at $81M raised, with ePower ($20M), Viotas ($11M) and Oceanic Energy ($11M) rounding out a mid-tier that's moving faster than the headline number suggests. No unicorns yet, but the sector's growing at a CAGR of roughly 7.1%, driven by rising global energy demand and the accelerating shift away from paper-based operational records toward digital management systems. Enterprise Ireland and the EIC Fund are among the most active backers here, which tells you something about where public and quasi-public money is placing its bets.
So what's the current signal? Median install growth across energy apps hit +28% year-on-year across 138 tracked apps, a quiet momentum stat that reflects genuine end-user pull. Hot themes right now include EV battery technology, next-generation EV platforms and solar electricity generation, a cluster that lines up neatly with what clean energy technical assistance reports are flagging as the hardest commercialisation challenges. I'd also watch the market-readiness gap closing faster than most analysts expected heading into this quarter.
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 Ireland
| # | 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 | 13 mo ago | 33 | Declan Barrett Founder & CCO | WordPressMySQLPHP+27 | Top 10M | — | — |
| 2 | Stream BioEnergy Developer of bioenergy projects | $73M | 60 mo ago | 22 | Kevin Fitzduff Managing Director | WordPressMySQLPHP+15 | Top 10M | — | 1 partnership |
| 3 | OpenHydro Tidal energy generation systems and grid control systems | $71M | 105 mo ago | 114 | — | — | — | 450 patents Hydroelectric turbine control, blade/coils design, and modular generator array integration. | — |
| 4 | EasyGo Provider of electric vehicle charging operators | $49M | 32 mo ago | 32 | Chris Kelly CEO | WordPressPleskMySQL+25 | Top 5M | — | 2 partnerships |
| 5 | Exergyn Waste Heat to energy converter | $35M | 52 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 |
| 6 | ePower Provider of electric vehicle chargers and solar panel solutions for properties | $20M | 21 mo ago | — | Epower Systech Founder | WordPress Block EditorCart FunctionalityWooCommerce+28 | Top 5M | — | 1 expansion |
| 7 | Firecomms Manufacturer of optical networking equipment for smart grids | $17M | 209 mo ago | 51 | — | YouTubeBootstrapAmazon Web Services+25 | Top 10M | 81 patents High‑performance optical receiver front‑end components and low‑noise transimpedance amplifiers | — |
| 8 | Oceanic Energy WEC based on oscillating water column principle | $11M | 13 mo ago | — | Neil Lamerton CEO & MD | WordPressMySQLPHP+16 | Top 50M | — | — |
| 9 | VIOTAS Provider of smart grid and demand response technology | $11M | 12 mo ago | 117 | — | WordPress Block EditorWordPressMySQL+22 | Top 10M | — | 1 job opening |
| 10 | Modmo Manufacturer of electric bicycles | $10M | 52 mo ago | 55 | — | Cart FunctionalityShopifyPageFly+47 | Top 10M | — | — |
| 11 | Cylon Provider of multi-site building energy management systems | $10M | 143 mo ago | 100 | — | — | — | — | — |
| 12 | Gaelectric Renewable Energy generation Company and storage system development | $9M | 96 mo ago | 90 | Eamonn Mc Grath CEO | — | — | — | — |
| 13 | Zipp Mobility App-based platform offering electric kick scooter/bicycle sharing services | $9M | 47 mo ago | 13 | Charlie Gleeson Founder & CEO | — | — | — | — |
| 14 | XFuel Developer of low-carbon drop-in transport fuels from diverse waste streams | $8M | 4 mo ago | 16 | Nicholas Ball Co-Founder & CEO | WordPressMySQLPHP+27 | Top 10M | — | — |
| 15 | 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 |
| 16 | AmbiSense Provider of AI-based autonomous gas monitoring technology | $6M | 57 mo ago | 20 | — | — | — | 13 patents Real-time ambient gas concentration and flow-rate sensing for air quality monitoring | — |
| 17 | MOBY App-based electric-bicycle sharing platform | $4M | 28 mo ago | 31 | Thomas O Connell Founder & CEO | WordPressMySQLPHP+45 | Top 5M | — | 1 launch |
| 18 | Esave Corporation Connected battery management solution for grid connecticvity | $4M | 132 mo ago | 3 | Peter Haydon Founder & CEO | — | — | — | — |
| 19 | Smart Efficient Light Control Provider of street lighting monitoring solutions | $3M | 192 mo ago | 200 | — | — | — | — | — |
| 20 | SolarPrint Manufacturers dye sensitised solar cell and also supplies electrolyte | $3M | 162 mo ago | — | Mazhar Bari Co-Founder | — | — | 12 patents Dye-sensitized and indoor solar cell modules with specialized electrolytes | — |
| 21 | Cathx Ocean Developer of lighting, imaging, and machine vision tools for subsea imaging | $3M | 115 mo ago | 39 | Adrian Boyle CEO | WordPressMySQLPHP+30 | Top 50M | 8 patents Underwater imaging system calibration and performance optimization | — |
| 22 | Wavebob WEC point absorber device | $2M | 188 mo ago | — | William Dick Founder | — | — | 44 patents Marine wave energy converters and resonance control technologies for offshore power generation | — |
| 23 | SeaPower Provider of a wave attenuator | $2M | 128 mo ago | — | — | — | — | — | — |
| 24 | w1Da Developer of electric racing and cruising sailors | $2M | 75 mo ago | 4 | Rory Staunton Managing Director | — | — | — | — |
| 25 | GKinetic Energy Provider of vertical axis turbine device for ocean currents, rivers, and canals | $2M | 64 mo ago | 6 | — | WordPress Block EditorWordPressMySQL+15 | Top 10M | 16 patents Wind turbine blade pitch mechanisms and water turbine assembly designs | — |
| 26 | Spark Works Edge computing based IoT platform | $2M | 65 mo ago | — | Orestis Akrivopoulos CEO | WordPressMySQLPHP+24 | Top 50M | — | — |
| 27 | Climote Provider of heating control systems | $2M | 91 mo ago | 18 | Derek Roddy Co-Founder & CEO | OpenSSLBootstrapApache HTTP Server+10 | Top 5M | 31 patents Smart control of hot water storage tanks for heating systems using IoT and algorithms | — |
| 28 | Openvolt API for smart meter data | $2M | 33 mo ago | — | Don O'Leary Co-Founder | — | — | — | — |
| 29 | Energy Reform Provider of power and energy system modelling and analysis services | $2M | 41 mo ago | — | — | — | — | — | — |
| 30 | VT Electron Company provides grid monitoring solutions for grid operators | $1M | 122 mo ago | 12 | Mark Bannon Founder & CEO | — | — | — | — |
| 31 | Hybrid Energy Lithium-based energy storage systems for offgrid applications | $1M | 182 mo ago | 11 | — | — | — | 5 patents Patents concentrated in electrical & electronics | — |
| 32 | EpiSensor Sensor systems and gateway for demand response and energy management | $1M | 174 mo ago | 6 | Brendan Carroll Co-Founder & CEO | WordPressMySQLPHP+22 | Top 50M | — | — |
| 33 | EVHACS Provider of electric vehicle chargers | $1M | 33 mo ago | 10 | John Byrne Co-Founder | WordPressMySQLPHP+39 | Top 50M | — | 1 launch |
| 34 | Wattics Cloud based analytics solutions for monitoring appliances and equipments | $984K | 108 mo ago | 13 | — | — | — | — | — |
| 35 | SureWash Hand hygiene training and compliance measurement | $827K | 150 mo ago | 11 | — | WordPressMySQLPHP+29 | Top 10M | — | — |
| 36 | ResourceKraft Data analytics for energy management | $808K | 194 mo ago | 20 | Liam Relihan Co-Founder & CEO | — | — | — | — |
| 37 | Eco-Mova Developer of electric trailer chargers | $711K | 51 mo ago | 16 | Ann ODea Co-Founder & CEO | WordPressMySQLPHP+16 | Top 1M | — | — |
| 38 | Lightly Technologies Provider of LED light source modules | $620K | 98 mo ago | — | Brian Charman Co-Founder | — | — | — | — |
| 39 | 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 | — | — |
| 40 | Exceedence Software and advising firm focuses on the renewable energy industry | $429K | 92 mo ago | 11 | — | — | — | — | — |
| 41 | Ceramicx Manufacturer of infrared heating systems | $281K | 128 mo ago | 17 | Frank Wilson Co-Founder & Managing Director | Cart FunctionalityWooCommerceWordPress+32 | Top 5M | — | 1 job opening · 1 launch · 1 award |
| 42 | Enerit SaaS-driven software solutions for energy management | $169K | 129 mo ago | — | Mike Brogan Co-Founder & CEO | — | — | — | — |
| 43 | NDT Global Provider of pipeline inspection, integrity management, and subsea robotic services | — | 12 mo ago | 650 | — | ContentfulThree.jsGoogle Maps+24 | Top 10M | 20 patents Non‑destructive pipeline inspection and magnetic stress analysis for pipe integrity monitoring. | 1 launch · 1 partnership |
| 44 | Johnson Controls Manufacturer and supplier of automotive batteries and HVAC equipment | — | 12 mo ago | 100,000 100,000 → 60,114 (-40%) | George Oliver CEO | SitecoreSentryTypeScript+44 | Top 500k | — | 1 launch · 1 award |
Top 12 Energy Tech companies in Ireland
#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
Funding Raised · Limerick, County Limerick · founded 2013 · 117 employees$11.4Mraised▾
Provider of smart grid and demand response technology. It offers demand response solutions that allows commercial and industrial operations to earn revenue by participating in the electricity market.
- May 2025Conventional Debt$11.4M
#4
Funding Raised · Cobh, County Cork · founded 2005$11.4Mraised▾
WEC based on oscillating water column principle. It has only one moving part and the mooring system holds the OE Buoy in position and is key to its survivability in the gale-force winds and extreme sea states. The turbine captures the energy of the wave and the generator converts this energy to electrical power.
- Apr 2025Grant (prize money)$11.4M
#5
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
#6
Series A · Cork, Munster · founded 2018$19.9Mraised▾
Provider of electric vehicle chargers and solar panel solutions for properties. They offer supply, installation, and maintenance for residential, commercial, and public sector clients. Support services, managed solutions, and grant assistance are available. The company also retails EV charging cables and operates a charging point app.
- Sep 2024Series A$17.7M
- Sep 2023Seed$2.1M
#7
Acquired · Maynooth, County Kildare · founded 2018 · 32 employees$49.1Mraised▾
Easy Go operates EV charging infrastructure in Ireland.
- Oct 2023Series C$31.7M
- Oct 2021Series B$17.4M
- Oct 2021Conventional Debt—
#8
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
#9
Series B · Dublin, Leinster · founded 2009 · 22 employees$73.2Mraised▾
Developer of bioenergy projects
- Jun 2021Series B$73.2M
#10
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
#11
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
#12
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
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.