Top Clean Energy Startups in United Kingdom (2025 Update)
Explore the best Clean Energy companies in United Kingdom. Discover high-growth startups and investment opportunities in our 2025 updated list.
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Explore Top Clean Energy Startups in United Kingdom featuring 132 Companies
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CircaGene | - | CircaGene platform for personal genetic tests World's first Patented Incognito D... | The mission of CircaGene is to provide world-class BioInformatics Services to pr... | - |
United Kingdom
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London | United Kingdom (HQ) | 2018 | Health Care, Health and Wellness +1 | [email protected] |
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Low
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8
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704 (-19%) | 5 years ago | Pre Seed | 2 | 187.5K | 857 | 1 year ago | |
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MultiplAI Health | - | MultiplAI leverages genomics and AI to provide universal remote screening for ca... | MultiplAI Health is a preventive medicine company pioneering blood screening for... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2019 | AI, Biopharma +3 | [email protected] |
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14
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49 | 2 years ago | Seed | 3 | 2.3M | 13329 | 10 months ago | |
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Bramble Energy Limited | - | Powering Net Zero | Bramble is a technology company on a mission to drive transformational change in... | - |
United Kingdom
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Crawley | United Kingdom (HQ) | 2015 | Consumer Electronics, Energy +4 | [email protected] |
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Low
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77
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1.8K (-10%) | 2 years ago | Grant | 6 | 55.7M | 13249 | 5 months ago | |
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Better Origin | - | We fix the broken food chain. | For supermarkets, food producers, and farmers, we offer modular insect farms tha... | - |
United Kingdom
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Cambridge | United Kingdom (HQ) | 2019 | AI, Agriculture +1 | [email protected] |
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Low
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25
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7.2K (85%) | 3 years ago | Series A | 7 | 22.2M | 10407 | 1 year ago | |
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Seabound | - | We capture CO2 emissions from cargo ships. | Seabound builds carbon capture equipment for large cargo ships. The equipment si... | - |
United Kingdom
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London | United Kingdom (HQ) | 2021 | ESG, Sustainability +1 | - |
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Low
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19
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2.1K | 3 years ago | Seed | 2 | 4.4M | 4934 | 5 months ago | |
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Cquestr8 Ltd | - | Reactor-based, packaged, scalable. We bring sequestration to your CO2 - biogas/A... | Fighting climate change with mineral carbonation. Permanent Storage of CO2 conve... | - |
United Kingdom
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London | United Kingdom (HQ) + 2 | 2020 | ESG, Clean Energy | - |
1
Low
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3
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535 | 4 years ago | Seed | 1 | 300.0K | 420 | 1 year ago | |
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Mandulis Energy | - | Developing sustainable energy infrastructure in low-income​ countries | Mandulis Energy is a developer of sustainable energy projects in low-income coun... | - |
United Kingdom
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London | United Kingdom (HQ) | 2014 | Agriculture, Energy +2 | [email protected] |
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Low
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12
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425 | 4 years ago | Series Unknown | 10 | 2.5M | 1948 | 5 months ago | |
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Solaris Offgrid | - | Delivering life-changing technology to the Next Billion through IT Solutions and... | Solaris Offgrid supports last-mile distributors through PaygOps, a cloud IT infr... | - |
United Kingdom
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London | United Kingdom (HQ) + 2 | 2014 | Renewable Energy, Clean Energy | [email protected] |
1
Low
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35
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204 (-88%) | 5 years ago | Series Unknown | 5 | 1.2M | 12812 | 7 months ago | |
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BIOS Health Ltd | - | Code the body can run. | BIOS Health uses AI-driven insights from the nervous system to build neural digi... | - |
United Kingdom
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Cambridge | United Kingdom (HQ) + 1 | 2015 | AI, Health Care +3 | [email protected] |
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Low
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26
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3.8K | 1 year ago | Series Unknown | 10 | 46.8M | 5509 | 3 months ago | |
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Continuum Industries | - | Developers of Optioneer - rapid AI-powered optioneering for linear infrastructur... | Tackling decarbonisation and the transition to net zero means radically transfor... | - |
United Kingdom
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Edinburgh | United Kingdom (HQ) + 2 | 2018 | AI, Renewable Energy +2 | [email protected] |
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Low
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57
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2.6K | 1 year ago | Series A | 5 | 12.3M | 4121 | 3 months ago | |
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Mogrify | - | Transforming the lives of patients with degenerative diseases through a novel cl... | Mogrify® has developed a proprietary suite of platform technologies that utilize... | - |
United Kingdom
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Cambridge | United Kingdom (HQ) | 2019 | Big Data, Biotechnology +4 | [email protected] |
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Low
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38
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1.8K (-18%) | 1 year ago | Series A | 7 | 48.9M | 8674 | 5 months ago | |
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CARNOT | - | The Future of Sustainable Powertrains | We are developing the world's most efficient, fuel agnostic zero emission powert... | - |
United Kingdom
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London | United Kingdom (HQ) | 2019 | Sustainability, Transportation +2 | [email protected] |
1
Low
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75
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6.0K (107%) | 2 years ago | Equity Crowdfunding | 4 | 1.7M | 2973 | 5 months ago | |
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CORE POWER | - | CORE POWER is building scalable new nuclear technologies for ocean transport and... | CORE POWER is building scalable new nuclear technologies for ocean transport and... | - |
United Kingdom
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London | United Kingdom (HQ) | 2018 | Energy, Industrial +4 | [email protected] |
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Low
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41
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7.8K | 2 years ago | Series B | 4 | 104.7M | 11085 | 5 months ago | |
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Boldr | - | Empowering households to reduce energy consumption while making homes a proactiv... | Empowering households to reduce energy consumption while making homes a proactiv... | - |
United Kingdom
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London | United Kingdom (HQ) | 2022 | Consumer Goods, Energy +3 | [email protected] |
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Low
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25
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20.5K | 8 months ago | Seed | 6 | 3.4M | 2777 | 3 months ago | |
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IPG Energy | - | Reinventing fuel-based power for the net-zero future | Diesel generators are everywhere. From construction sites to data centres – even... | - |
United Kingdom
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London | United Kingdom (HQ) | 2016 | Energy, Clean Energy +1 | [email protected] |
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Low
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18
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1.1K | 1 year ago | Grant | 4 | 7.1M | 1384 | 7 months ago | |
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Ventive Limited | - | Naturally Intelligent Buildings | Ventive designs and manufactures naturally intelligent Heating and Ventilation s... | - |
United Kingdom
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Kingston Upon Thames | United Kingdom (HQ) | 2011 | IT, Real Estate +2 | [email protected] |
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Low
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12
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605 (-33%) | 1 year ago | Series Unknown | 5 | 6.4M | 904 | 10 months ago | |
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Electron | - | Launch, operate and coordinate multiple markets for flexibility and distributed... | Electron’s purpose is to accelerate the energy transition by unleashing renewabl... | - |
United Kingdom
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London | United Kingdom (HQ) | 2015 | Blockchain, Data Analytics +3 | [email protected] |
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Low
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68
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4.4K (29%) | 1 year ago | Series Unknown | 15 | 11.0M | 6291 | 7 months ago | |
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Intelligent Energy | - | Powering the hydrogen future® with our outstanding fuel cells and service. |
Powering the hydrogen future® with our outstanding fuel cells and service. Inte... |
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United Kingdom
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Loughborough | United Kingdom (HQ) | 2001 | Energy, Manufacturing +4 | [email protected] |
1
Low
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240
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9.1K (34%) | 8 months ago | Equity | 9 | 183.3M | 15958 | 10 months ago | |
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MoltexFLEX | - | Developer of the FLEX reactor: a nuclear reactor that can meet the global demand... | We are a UK team of scientists and engineers, focused on the dual challenges of... | - |
United Kingdom
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Warrington | United Kingdom (HQ) | 2022 | Energy, Clean Energy +1 | [email protected] |
1
Low
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16
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713 (-100%) | 1 year ago | Grant | 2 | 1.3M | 2711 | 6 months ago | |
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Exergy3 Limited | - | 1000°C+ thermal energy storage to decarbonise medium to large-scale enterprises. | Exergy3 is clean-tech spinout from the University of Edinburgh. We are developin... | - |
United Kingdom
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Edinburgh | United Kingdom (HQ) | 2023 | Renewable Energy, Clean Energy +1 | [email protected] |
1
Low
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11
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254 (-53%) | 1 year ago | Grant | 3 | 7.8M | 714 | 5 months ago | |
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Gridcog | - | See Your Energy Future Clearly | Gridcog is a global energy tech company on a mission to accelerate the world’s t... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2020 | Energy, Clean Energy | [email protected] |
1
Low
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26
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7.2K (-10%) | 1 year ago | Seed | 5 | 7.9M | 9476 | 7 months ago | |
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CUR8 | - | Trusted carbon removals from the world's leading experts | Even if we do everything else right on reducing emissions, the world still needs... | - |
United Kingdom
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London | United Kingdom (HQ) | 2022 | Clean Energy | - |
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Low
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32
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666 (-100%) | 2 years ago | Pre Seed | 1 | 5.3M | 6596 | 5 months ago | |
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Factored | - | Embedded property financing | Factored empowers property owners to access capital from their future rental inc... | - |
United Kingdom
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London | United Kingdom (HQ) | 2023 | Financial Services, Fintech +5 | [email protected] |
1
Low
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3
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572 (2387%) | 1 year ago | Non Equity Assistance | 3 | 300.0K | 928 | 5 months ago | |
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Eden Genetics Ltd | - | Using machine learning to rebuild biology | Eden Bio uses machine learning to improve protein yield, saving companies time a... | - |
United Kingdom
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London | United Kingdom (HQ) | 2021 | Biotechnology, Clean Energy +1 | - |
1
Low
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4
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710 (35%) | 2 years ago | Seed | 1 | 1.0M | 2095 | 1 year ago | |
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mopo (Mobile Power) | - | A pay-per-use battery technology company revolutionising the supply of sustainab... | MOPO is a pay-per-use battery technology company focussed on the supply of susta... | - |
United Kingdom
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Sheffield | United Kingdom (HQ) | 2013 | Energy, Clean Energy +1 | - |
1
Low
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71
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1.1K (1975%) | 1 year ago | Series Unknown | 4 | 5.7M | 2179 | 5 months ago | |
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PF Nexus | - | Global visibility and connectivity across renewable energy investment. | PF Nexus is creating visibility and connectivity across renewable energy investm... | - |
United Kingdom
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London | United Kingdom (HQ) | 2019 | Platforms, Renewable Energy +3 | [email protected] |
1
Low
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9
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6.6K (-1%) | 2 years ago | Seed | 2 | 625.0K | 1838 | 5 months ago | |
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SEaB ENERGY (SEaB Power L... | - | Modular circular systems which transform food waste into heat, electricity, wate... | The food supply chain produces huge amounts of food waste, which must be managed... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2018 | Energy, Renewable Energy +2 | [email protected] |
1
Low
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7
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923 (-8%) | 2 years ago | Series Unknown | 4 | 2.1M | 1378 | 11 months ago | |
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Airspection | - | Reliable Remote Inspections Done Safely. | Airspection provides reliable and safe drone services for hard-to-reach infrastr... | - |
United Kingdom
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Glasgow | United Kingdom (HQ) + 1 | 2022 | Drones, Energy +1 | - |
1
Low
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4
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883 | 1 year ago | Grant | 1 | 100.0K | 568 | 5 months ago | |
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Armour Edge | - | Armour Edge leading edge protection for wind turbine blades | Armour Edge is a game-changing solution to the costly problem of leading edge er... | - |
United Kingdom
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Edinburgh | United Kingdom (HQ) | 2016 | Renewable Energy, Clean Energy | - |
1
Low
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8
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27669 | - | Seed | - | 700.0K | 295 | 5 months ago | |
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Sustainable Marine | - | Tidal Energy Solutions for Island and Coastal Communities | Sustainable Marine is committed to developing truly sustainable tidal energy sol... | - |
United Kingdom
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Edinburgh | United Kingdom (HQ) + 1 | 2012 | Energy, Renewable Energy +1 | [email protected] |
1
Low
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6
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14329 | - | Seed | - | 150.0K | 4579 | 1 year ago | |
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GenomeKey | - | GenomeKey enables targeted Sepsis treatment in hours, rather than days | GenomeKey enables targeted Sepsis treatment in hours, rather than days. This is... | - |
United Kingdom
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Bristol | United Kingdom (HQ) | 2019 | AI, Biotechnology +3 | [email protected] |
1
Low
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28
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85406 | - | Grant | - | 3.0M | 2043 | 5 months ago | |
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Demand Logic | - | Award-winning building optimisation platform: Save energy, maximise asset value,... | Demand Logic is a multi-award winning building optimisation platform which provi... | - |
United Kingdom
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London | United Kingdom (HQ) | 2007 | Energy, Real Estate +2 | [email protected] |
1
Low
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26
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32041 | - | Seed | - | 2.0M | 2570 | 5 months ago | |
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OmicsChart | - | Multi-Omics for Translational Cancer Research | OmicsChart is a computational cancer biology startup revolutionising translation... | - |
United Kingdom
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Cardiff | United Kingdom (HQ) | 2022 | Biopharma, Life Sciences +1 | [email protected] |
1
Low
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3
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98164 | - | Non Equity Assistance | - | 300.0K | 1681 | 9 months ago | |
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E24 Solutions | - | Innovative & Affordable Energy Solutions to reduce bills and preserve our planet | E24 Solutions - Bridging The Global Energy Gap E24 is the result of 30 years’ ex... | - |
United Kingdom
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London | United Kingdom (HQ) + 3 | 2011 | Energy, Renewable Energy +2 | [email protected] |
1
Low
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3
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63725 | - | Series A | - | 3.0M | 675 | 8 LhC xOQ | |
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Hydrologiq | - | Hydrogen power made easy | Hydrologiq makes hydrogen the turnkey, scalable and immediate diesel replacement... | - |
United Kingdom
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York | United Kingdom (HQ) | 2019 | Energy, Entertainment +2 | [email protected] |
1
Low
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7
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1.4K (-71%) | 3 years ago | Pre Seed | 1 | 650.0K | 38226 | 5 months ago | |
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EcoSteam Ltd | - | Chemical-free steamer hygiene sanitisation (disinfection) and cleaning services... | Eco friendly, safe and reliable deep cleaning - we do not use any chemicals or h... | - |
United Kingdom
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Newcastle Upon Tyne | United Kingdom (HQ) | 2020 | Consumer Goods, Clean Energy | [email protected] |
1
Low
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3
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1.8K (88%) | 2 years ago | Debt Financing | 1 | 50.0K | 100 | 4 years ago | |
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UrbanChain | - | Our tech creates local energy markets to connect buyers and sellers. |
We’re building local energy communities based on renewables. Our tech connects... |
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United Kingdom
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Manchester | United Kingdom (HQ) | 2017 | AI, Blockchain +5 | [email protected] |
1
Low
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58
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2.9K | 5 months ago | Series B | 5 | 56.6M | 4568 | 3 months ago | |
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Angara Global | - | SUSTAINABLE FUTURE FOR OUR WORLD. AI-POWERED PRAGMATIC TECHNOLOGY TO DECARBONIZ... | Angara’s proprietary platform, DecarbonX, is fundamentally changing the way heat... | - |
United Kingdom
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London | United Kingdom (HQ) + 2 | 2015 | AI, Information Technology +2 | [email protected] |
1
Low
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36
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261 (-86%) | 3 years ago | Series A | 7 | 10.6M | 1871 | 3 months ago | |
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Knowledgator | - | Information extraction AI converting unstructured text into self-editing dynamic... | Whether during creating market reports in a venture firm or collecting target in... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2021 | AI, Analytics +4 | [email protected] |
1
Low
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7
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323 | 2 years ago | Grant | 3 | 96.7K | 2283 | 5 months ago | |
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Novogene Europe | - | Leading Edge Genomic Services & Solutions | Novogene is a leading provider of genomic services and solutions with cutting ed... | - |
United Kingdom
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Cambridge | United Kingdom (HQ) | 2011 | Biotechnology, Life Sciences +2 | [email protected] |
1
Low
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147
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16.3K | 8 years ago | Series B | 1 | 515.0M | 30782 | 3 months ago |