151 Energy startups in the UK (free list)
Track funded energy companies, founders and investors across the UK startup ecosystem.
Updated daily by John-Pierre ClarkUpdated daily by John-Pierre Clark| Date | Startup | Funding | Round | Sector | Location | Connect | Website | Investor1 | Investor2 | Investor3 | Investor4 | Investor5 | Founder(s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
27 May 2026 |  Caudal Energy A modular tidal generator that uses an oscillating fin to convert tidal flo... | £4,300,000 | |||||||||||
14 May 2026 |  Iceotope Iceotope supplies a liquid cooling system for servers and AI accelerators. ... | £19,230,000 US$26,000,000 | |||||||||||
12 May 2026 |  H2CHP H2CHP makes a free-piston linear generator that converts piston motion dire... | £1,500,000 | Durham  | ||||||||||
7 May 2026 |  Nyobolt Nyobolt makes a high-power, fast-charging battery system for autonomous mac... | £44,000,000 | |||||||||||
5 May 2026 |  Barocal Barocal's product is a solid-state heating and cooling platform that uses o... | £7,390,000 US$10,000,000 | |||||||||||
28 Apr 2026 |  Enviromena A senior debt facility combining committed capital and an uncommitted accor... | £825,000 | |||||||||||
21 Apr 2026 |  Exergy3 Exergy3 produces modular thermal energy storage units that convert surplus ... | £10,000,000 | |||||||||||
20 Apr 2026 |  Rivan Rivan supplies synthetic natural gas produced from renewable electricity an... | £25,000,000 | |||||||||||
17 Apr 2026 |  Best.Energy Best.Energy provides an energy management system combining IoT sensors and ... | £6,250,000 | |||||||||||
7 Apr 2026 |  SAMP Technology SAMP Technology provides an engineering and software service for energy and... | £4,000,000 | |||||||||||
25 Mar 2026 |  Applied Computing Orbital is a physics-based foundation model and software platform for indus... | ||||||||||||
20 Mar 2026 |  Regeno Regeno's product is a wind turbine designed to allow key parts to be access... | £420,000 | |||||||||||
12 Mar 2026 |  Kinewell Kinewell provides optimisation software for offshore wind farm design. It m... | £750,000 | Newcastle upon Tyne | ||||||||||
12 Mar 2026 |  AmpliSi AmpliSi supplies porous silicon anodes for batteries. They are used to boos... | £2,000,000 | |||||||||||
26 Feb 2026 |  Sero Sero provides retrofit delivery and ongoing energy management services for ... | Cardiff | |||||||||||
24 Feb 2026 |  Tewke Tap is a wall-mounted smart switch with nine onboard sensors for retrofit i... | £150,000 | |||||||||||
10 Feb 2026 |  tem tem offers an AI-native transaction infrastructure for business energy cont... | £55,000,000 US$75,000,000 | |||||||||||
28 Jan 2026 |  LUX LUX provides modular on-site hydrogen systems that integrate production, st... | £280,000 | |||||||||||
16 Jan 2026 |  Ionech The Air Voltaic Cell is a compact device that converts thermal energy in am... | £2,000,000 | |||||||||||
2 Jan 2026 |  Kraken Kraken is an AI operating system for utilities. It runs billing and custome... | £1,000,000,000 | |||||||||||
22 Dec 2025 |  Venterra Venterra provides integrated offshore wind services covering planning, surv... | £40,000,000 | |||||||||||
18 Dec 2025 |  Fuse Energy Fuse Energy offers an integrated energy platform combining grid-balancing s... | £52,350,000 US$70,000,000 | |||||||||||
10 Dec 2025 |  Kodiaq Technologies An organic electrolyte chemistry for flow batteries that replaces metal-bas... | £850,000 | |||||||||||
9 Dec 2025 |  Orbital Marine Power Orbital Marine Power operates floating tidal turbines that generate electri... | £7,000,000 | Kirkwall | ||||||||||
3 Dec 2025 |  Mater-AI Mater-AI provides an AI platform for computational discovery of thermoelect... | £1,500,000 | |||||||||||
3 Dec 2025 |  Modo Energy Modo Energy provides a market platform that combines benchmarks and data fo... | £25,000,000 | |||||||||||
25 Nov 2025 |  Installio Installio is a service that combines a project-management platform, a vette... | £1,500,000 | |||||||||||
19 Nov 2025 |  Cosysense Cosysense offers a building management platform combining sensors and analy... | £1,500,000 | |||||||||||
6 Nov 2025 |  Cambridge Photon Technology A photon-multiplier module that attaches to standard solar panels and conve... | £1,560,000 | |||||||||||
23 Oct 2025 |  Rightcharge Rightcharge is a payments platform that automates EV charging reimbursement... | £1,600,000 |
1 Explore 151 UK energy startups and their founders, who have collectively raised £3.64B.
2 Easily sort, filter, and compare the UK's top startups — customise the list to your needs.
3 Discover top startups for investment, B2B sales, partnerships, hiring, and industry connections.
You can connect with fast-growing energy startups with the full list of recently funded startups from the UK.
With startups such as Octopus Energy, Ovo Energy, and Zenobe, the UK energy sector has become a thriving hub for innovation. Driven by the global push for sustainability, renewable energy adoption, and advancements in technology, energy startups are transforming how we generate, manage, and consume energy.
UK energy startup insights
The UK energy sector is undergoing major transformation driven by the transition to renewables, grid modernisation and electrification. London, Oxford, Cambridge and the North East are emerging as key hubs for funded energy and climate startups.
Energy in this context includes renewable generation, energy storage, grid technology, EV infrastructure, energy analytics, optimisation software and industrial decarbonisation tools. Funding spans early-stage climate innovation through to large Series A and growth rounds.
Snapshot of the UK energy landscape
- Active funding across storage, grid tech, EV infrastructure and energy analytics
- Key hubs include London, Oxford and the North East
- Round sizes range from SEIS-backed seed rounds to multi-million pound Series A
- Investors include climate funds, corporate energy groups and deeptech VCs
- Strong momentum driven by net zero targets and industrial electrification
Use this page to explore the fastest growing energy startups in the UK, then review individual profiles for websites, investors, locations and recent funding rounds.
What does it mean to be an energy startup?
Energy startups focus on developing innovative technologies, services, and business models aimed at improving energy efficiency, sustainability, and accessibility. These businesses typically target challenges within renewable energy generation, smart energy management, storage solutions, and sustainability initiatives.
Energy startups utilise technologies such as renewable energy sources, battery storage, smart grids, IoT devices, and artificial intelligence to optimise energy use, reduce emissions, and promote sustainable practices. They tackle critical issues like energy distribution efficiency, decarbonisation, grid resilience, and the integration of renewable resources.
With investment and innovation in energy solutions rising, numerous energy investors are actively funding startups aiming to revolutionise the energy industry. Let’s explore the key areas currently being developed within energy innovation:
5 types of energy startups
Energy startups focus on innovative solutions for sustainable energy production, consumption, and management, addressing environmental challenges and optimising efficiency. Here are five distinct categories of energy startups:
Renewable Energy Startups
Companies developing technologies for generating clean energy from sources like solar, wind, or hydro power (examples: Bulb, Octopus Energy, Ripple Energy, Limejump).
Energy Storage Startups
Businesses specialising in advanced battery technologies, grid storage, and solutions for reliable energy management (examples: Moixa, Zenobe, Highview Power, Powervault).
Energy Efficiency Startups
Startups providing innovative tools and systems to reduce energy consumption in homes, businesses, or industrial processes (examples: Tado°, Airex, Q-Bot, Switchee).
Smart Grid and Energy Management Startups
Companies using IoT, AI, and data analytics to optimise energy distribution, usage, and integration (examples: Grid Edge, Kiwi Power, Upside Energy, Sense).
Electric Vehicle Charging Startups
Startups building infrastructure, software, or services supporting electric vehicle charging networks (examples: Pod Point, Connected Kerb, Fastned, InstaVolt).
Related energy and climate tech resources
Frequently asked questions
Energy startups build technologies, software or services that improve how energy is generated, stored, distributed, traded or used. UK energy startups commonly work across renewables, grid software, batteries, energy management, hydrogen, carbon reduction, smart buildings and industrial efficiency.
Energy startups are growing because the UK is transitioning towards cleaner, more flexible and more resilient energy systems. Rising demand for renewables, grid modernisation, energy efficiency and carbon reduction has created opportunities for founders building climate and infrastructure technologies.
Energy startups raise funding from angel investors, venture capital firms, climate funds, infrastructure investors, grants and strategic corporate partners. Many companies also use pilots with utilities, industrial customers or local authorities to prove commercial value.
London, Aberdeen, Bristol, Edinburgh, Manchester, Cambridge and Oxford are important hubs for energy startups. Aberdeen is particularly relevant for energy transition and offshore expertise, while London provides access to investors, customers and climate technology networks.
Investors look for energy startups with large market potential, strong technical execution, regulatory awareness and a credible route to deployment. Because energy markets are complex, customer pilots, strategic partnerships and measurable cost or emissions savings are especially important.