Best Energy Tech Companies in Wales, United Kingdom
The 38 best Energy Tech companies in Wales, United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: QLM.
Our analysis of 58 Energy Tech companies
$7.3b in tracked funding; 82% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Tech companies in Wales
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | QLM Provider of quantum sensing technology for natural gas leak detection 24Talent top 34%Funding top 42%News top 45%Tech top 47% All 7 signals ▾Talenttop 34% Fundingtop 42% Newstop 45% Techtop 47% Moattop 48% Globalbottom 37% Marketbottom 21% Talent: Analyst team rating 4/5 · 2 named leaders on record Funding: Raised $18.9M across 3 rounds · 3 rounds over 5 yrs (0.6/yr) rank vs industry peers · Fliar Intelligence Index 24/100 | $19M | 9 mo ago | Series A | Xiao Ai Co-founder and CTO | 2017 | Node.jsBootstrapVue.js+12 | — | — |
| 2 | Sure Chill Develops a refrigeration system for use with intermittent power | $12M | 90 mo ago | Series A | Peter Saunders Co-Founder | 2002 | — | 84 patents Portable refrigeration and cooling apparatus for mobile and transport applications | — |
| 3 | Riversimple Developer of hydrogen-powered vehicles offered through a subscription service model | $4M | 61 mo ago | Series A | Hugo Spowers Founder & Managing Director | 2013 | WordPressMySQLPHP+26 | — | — |
| 4 | Bloemteknik Provider of precision LED lighting solutions and autonomous control systems 24Product top 47%Talent bottom 49%Global bottom 45%Funding bottom 44% All 4 signals ▾Producttop 47% Talentbottom 49% Globalbottom 45% Fundingbottom 44% Product: 2 published apps (30 installs) · Company stage: Series A Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 24/100 | $3M | 8 mo ago | Series A | James Fleet Co-Founder & CEO | 2023 | — | — | — |
| 5 | Clenergy Cloud-based operating platform offering solutions for EV charging station network | $2M | 50 mo ago | Seed | William David Founder & CEO & Managing Director | 2017 | Windows ServerMicrosoft ASP.NETJW Player+26 | — | — |
| 6 | Deer Technology Provider of meter reading solutions for commercial applications | $2M | 64 mo ago | Seed | Garry Jackson Co-Founder | 2014 | — | — | 1 launch |
| 7 | Perpetual V2G Developers of clean technology solutions | $2M | 108 mo ago | Seed | — | 2013 | — | 13 patents Vehicle-integrated refrigeration and bidirectional grid power systems for commercial trucks | — |
| 8 | monva Comparison platform for credit cards | $1M | 65 mo ago | Deadpooled | — | 2018 | — | — | — |
| 9 | Seren Photonics Manufacturer of substrate | $704K | 101 mo ago | Seed | Godfrey Ainsworth Chairman & CEO | 2009 | — | 50 patents Manufacturing semi-polar semiconductor substrates and templates for optoelectronic devices. | — |
| 10 | Renbee Platform connecting homeowners with installers for home decarbonisation projects | $411K | 25 mo ago | Seed | Andrei Co-Founder | 2023 | — | — | — |
| 11 | Academy of Robotics Developer of autonomous systems for logistics, delivery, and transport solutions | $381K | 64 mo ago | Seed | William Sachiti Founder & CEO | 2016 | — | — | — |
| 12 | Rockfield Global Platform providing software solutions for the energy and nuclear industries | $202K | 60 mo ago | Acquired | John Cain CEO & MD | 1984 | Concrete CMSPleskPHP+15 | — | — |
Top 12 Energy Tech companies in Wales
#1
Series A · Newport, Wales · founded 2017 · 11 employees$18.9Mraised▾
Provider of quantum sensing technology for natural gas leak detection. It allows users to detect gas from wellheads and pipeline transportation activities. It can also be used with a drone. It has applications in oil and gas, industrial, biogas, and agricultural emission monitoring systems.
- Nov 2025Series A$4.6M
- Aug 2022Series A$14.6M
- Apr 2021Seed$4.3M
#2
Series A · Cardiff, Wales · founded 2023$3.4Mraised▾
Provider of precision LED lighting solutions and autonomous control systems. It specializes in creating customized LED lighting systems tailored for various horticultural applications, including vertical farms and greenhouses. Their offer include modular and adaptable lighting systems designed to optimize plant growth and productivity.
- Jan 2026Series A$3.4M
#3
Series A · Cardiff, Wales · founded 2002 · 26 employees$12.2Mraised▾
Develops a refrigeration system for use with intermittent power. The Sure Chill refrigeration system works by using a compartment surrounded by a cladding of water. Electric power is used to freeze the water. When power is not available, the ice melts and starts to rise. The system can be connected to renewable energy sources such as solar for off-grid applications, or the grid.
- Feb 2019Series A$9.2M
- Feb 2018Series A$7.1M
- Aug 2015Grant (prize money)$1.5M
- Nov 2012Seed$695K
#4
Seed · Monmouthshire, Wales · founded 2023$411.5Kraised▾
Platform connecting homeowners with installers for home decarbonisation projects. It streamlines the process of finding and managing installers for homeowners seeking to implement renewable energy solutions. The platform facilitates quoting, planning, and regulatory compliance, ensuring homeowners are connected with installers who deliver quality work. It also provides installers with access to a consistent stream of homeowners and resources for training and compliance.
- Jul 2024Seed$411.5K
#5
Series A · Llandrindod Wells, Wales · founded 2013 · 19 employees$4.4Mraised▾
Developer of hydrogen-powered vehicles offered through a subscription service model. The company focuses on zero-emission transportation solutions using hydrogen fuel cell technology. Vehicles are designed for efficiency, affordability, and sustainability. The subscription covers all motoring costs, including insurance and fuel.
- Jul 2021Series A$2.1M
- Jul 2019Seed$943.4K
- Feb 2019Grant (prize money)$1.6M
- Apr 2017Seed$1.4M
#6
Seed · Rhondda, Wales · founded 2017 · 8 employees$2.4Mraised▾
Cloud-based operating platform offering solutions for EV charging station network. It offers to set up a new EV network or manage an existing network. This platform provides solutions like charging hardware, software for managing networks, turnkey charging point solutions, electric fleet management solutions, etc. It also helps the EV drivers to find the nearest EV charging station. Mobile application is available for android and iOS users.
- Jun 2022Seed$2.4M
#7
Seed · Port Talbot, Wales · founded 2014 · 11 employees$1.8Mraised▾
Provider of meter reading solutions for commercial applications. The product offerings include LimpetReader - it is a device that takes pictures of the meter and converts the image to a data value, AutoReader - which automatically takes readings and sends the data to a secure database, and Handreader - a meter reading solution that is accessed securely online.
- May 2021Seed$1.8M
#8
Deadpooled · Deeside, Wales · founded 2018 · 2 employees$1.2Mraised▾
Monva offers a credit card comparison platform for consumers. It provides virtual assistance to consumers for making choices about credit cards. It enables to manage quotes, offers, switching of cards, and renewals through the central account. It offers a comparison of credit cards for money transfers, purchases, and more.
- Mar 2021Seed$616.5K
- Apr 2020Seed$541.4K
#9
Seed · Lampeter, Wales · founded 2013 · 8 employees$1.7Mraised▾
Perpetual V2G is a developer of a lithium battery based energy storage solution for vehicles, residential and commercial use, offroad use and outdoor shoot use for movie production companies. The energy storage unit can be charged using any vehicle alternator, a system which the company has devised to work as a drop-in solution to existing lead-acid batteries in vehicles.
- Aug 2017Seed$942K
- Jun 2016Seed$721.5K
#10
Seed · Cardiff, Wales · founded 2016 · 2 employees$380.7Kraised▾
Developer of autonomous systems for logistics, delivery, and transport solutions. The company designs autonomous vehicles for last-mile delivery and develops assistive helper bots for domestic and commercial tasks. It also explores autonomous, high-capacity transport solutions. The company collaborates with organizations to demonstrate autonomous logistics in real-world environments.
- Apr 2021Seed—
- Jan 2020Angel—
- Aug 2017Seed$380.7K
#11
Seed · Bridgend, Wales · founded 2009 · 3 employees$704.3Kraised▾
Seren Photonics manufactures substrates. Its products include polar, semi-polar and non-polar Gallium Nitride (GaN) templates and components for LED's, lasers, VCSELs and power switches. Has patented the technology which can significantly increase efficiencies of LEDs at high power levels. Also, the templates are used for manufacturing high-efficiency MicroLEDs for display technologies. The company has partnered with BluGlass.
- Apr 2018Seed$704.3K
- Feb 2018Seed—
#12
Acquired · Swansea, Wales · founded 1984$201.6Kraised▾
Platform providing software solutions for the energy and nuclear industries. It also offers physics simulations for industrial applications,addressing complex challenges in energy production and management.
- Sep 2021Grant (prize money)$201.6K
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 rising
How research on Grid Energy Storage is moving in the United Kingdom
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 2,113 United Kingdom-affiliated papers.
- Imperial College London185
- University of Birmingham115
- University of Cambridge109
- University College London102
- Institute of Physics98
- Battery (electricity)10→109
- Renewable energy5→85
- Electrolyte5→81
- Electrochemistry4→72
- Cathode4→66
- Renewable energy6→223
- Battery (electricity)11→144
- Thermal energy storage5→125
- Photovoltaic system1→71
- Electricity4→73
- Renewable energy5→96
- Battery (electricity)6→65
- Electrolyte3→32
- Nanotechnology5→32
- Cathode2→25
Where energy storage is researched across United Kingdom
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.
Who's filing energy storage patents in the United Kingdom
United Kingdom energy storage patent filing is accelerating — 891 filings from 356 assignees (2016–2025), led by Dyson Technology, Highview Entpr, Sunamp; annual filings 61→106.
- Dyson Technology97
- Highview Entpr45
- Sunamp35
- Jaguar LAND Rover34
- Gravitricity33
- Power ROLL33
- Isentropic32
- GE Energy Power Conversion Techn27
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.