Top Energy Startups in United Kingdom (2025 Update)
Explore the best Energy companies in United Kingdom. Discover high-growth startups and investment opportunities in our 2025 updated list.
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Explore Top Energy Startups in United Kingdom featuring 888 Companies
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Look After My Bills | - | UK's largest autoswitching service saving you money without you having to do a t... | Look After My Bills is the largest free energy auto-switching service in the cou... | - |
United Kingdom
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London | United Kingdom (HQ) | 2018 | Energy, Energy Efficiency | [email protected] |
1
Low
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6
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3.7K (-31%) | 6 years ago | Series A | 3 | 120.0K | 1728 | 4 years ago | |
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Energy Shift (Techstars ‘... | - | Monetise the Sun by investing in solar panels through Energy Shift, because SHIF... |
MONETISE THE SUNSHINE WITH ENERGY SHIFT Earn money by purchasing solar panels wi... |
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United Kingdom
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London | United Kingdom (HQ) | 2019 | Energy, Platforms +1 | [email protected] |
1
Low
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1
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300 (-100%) | 3 years ago | Pre Seed | 3 | 142.9K | 1847 | 4 years ago | |
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Utonomy Ltd | - | Utonomy‘s retrofittable technologies help gas network operators achieve their de... | Utonomy has developed innovative technology to automatically optimise the pressu... | - |
United Kingdom
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Southampton | United Kingdom (HQ) | 2015 | Energy, Logistics +2 | [email protected] |
1
Low
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33
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325 | 2 years ago | Series Unknown | 6 | 7.7M | 635 | 6 months ago | |
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Ecoisme | - | Ecois.me identifies devices from energy consumption using spectrum and power ana... | Our technology, Ecois.me, has the ability to recognize all devices within your h... | - |
United Kingdom
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London | United Kingdom (HQ) | 2014 | Energy, Renewable Energy | [email protected] |
1
Low
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604
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681 (-100%) | 7 years ago | Grant | 8 | 551.3K | 71734 | 3 nxh TG6 | |
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Cheesecake Energy Ltd | - | Making long-duration storage affordable | Cheesecake Energy is lowering the cost of long-duration energy storage, turning... | - |
United Kingdom
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Nottingham | United Kingdom (HQ) | 2016 | Energy, Industrial | - |
1
Low
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23
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1.4K (62%) | 2 years ago | Grant | 4 | 14.0M | 2653 | 8 months ago | |
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Blue Square Utilities | - | Blue Square Utilities installs smart meters for SME energy suppliers with experi... | Established in Newcastle, Blue Square Utilities is a company that specializes in... | - |
United Kingdom
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Newcastle Upon Tyne | United Kingdom (HQ) | 2017 | B2B, Energy +4 | [email protected] |
1
Low
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593
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846 | 7 years ago | Series Unknown | 1 | 500.0K | 48898 | 4 MFg 3iO | |
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ENECHANGE Innovation Limi... | - | Changing energy for a better world | ENECHANGE Innovation Limited identifies and develops energy technology solutions... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2016 | Analytics, Big Data +1 | [email protected] |
1
Low
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8
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359 (-100%) | 5 years ago | Grant | 6 | 621.9K | 2085 | 8 pqS oWT | |
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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] |
1
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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Igloo Energy | - | Igloo Energy is a tech-driven energy retailer that simplifies home energy manage... |
Igloo Energy is a new type of energy company. Using smart technology alongside... |
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United Kingdom
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Southampton | United Kingdom (HQ) | 2016 | Energy | [email protected] |
1
Low
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36
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503 | 5 years ago | Corporate Round | 2 | 606.9K | 3069 | 3 I7q 0A9 | |
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Venterra Group | - | Helping Wind Power Grow |
Our purpose is to help the world’s energy transition through wind power. As t... |
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United Kingdom
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London | United Kingdom (HQ) | 2021 | Energy, Renewable Energy | - |
1
Low
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162
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3.4K (31%) | 1 year ago | Series Unknown | 4 | 231.8M | 11528 | 5 months ago | |
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EnergyTag | - | An independent, non-profit initiative to transform carbon accounting with hourly... | EnergyTag is an international non-profit driving the next generation of carbon a... | - |
United Kingdom
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London | United Kingdom (HQ) | 2020 | Energy | - |
1
Low
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10
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2.4K (20%) | 3 years ago | Grant | 1 | 110.0K | 5118 | 5 months ago | |
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enee.io | - | Energy Intelligence | enee.io increases access to reliable and affordable energy by improving the life... | - |
United Kingdom
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Manchester | United Kingdom (HQ) | 2019 | Energy, Manufacturing +1 | [email protected] |
1
Low
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15
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1.4K (206%) | 1 year ago | Grant | 4 | 2.1M | 2031 | 5 months ago | |
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bp | - | Reimagining energy for people and our planet | We believe the world wants and needs a better and more balanced energy system th... | - |
United Kingdom
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London | United Kingdom (HQ) + 4 | 1909 | Energy, Industrial +2 | [email protected] |
1
Low
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70570
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2.3M (10%) | 11 months ago | Grant | 2 | 12.0B | 3665167 | 5 months ago | |
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Zeigo | - | Zeigo enables businesses to manage clean energy with data tools and connects ren... | Zeigo accelerates decarbonization for companies of all sizes. Created by industr... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2018 | Energy, Renewable Energy | - |
1
Low
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23
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179 (-100%) | 4 years ago | Seed | 3 | 800.0K | 7744 | 5 months ago | |
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Switchd | - | Switchd automates energy switching for UK households to ensure they are always o... | Switchd was established with the aim of assisting the 19 million households in t... | - |
United Kingdom
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London | United Kingdom (HQ) | 2017 | Energy | - |
1
Low
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186
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12.2K (-10%) | 2 years ago | Series A | 5 | 570.0K | 2228 | 11 months ago | |
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Octopus Energy | - | We're not your typical energy company. | We're on a mission to make a big green dent in the universe by building a truly... | - |
United Kingdom
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London | United Kingdom (HQ) | 2015 | Energy, Renewable Energy +1 | [email protected] |
1
Low
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3664
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10.8M (9%) | 1 year ago | Private Equity | 8 | 2.9B | 228203 | 6 months ago | |
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Neptune Energy | - | Neptune Energy is an independent oil and gas company focused on North Sea, North... | Neptune Energy is a self-governing organization that deals with oil and gas expl... | - |
United Kingdom
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London | United Kingdom (HQ) | 2015 | Energy, Renewable Energy +1 | - |
1
Low
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1346
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758 (-75%) | 3 years ago | Grant | 2 | 3.6M | 58842 | 3 Ymq Q6P | |
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Tonik Energy | - | Energy for the switched on. |
Tonik Energy Limited – in Administration (“the Company”) Matthew James Cowlish... |
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United Kingdom
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Birmingham | United Kingdom (HQ) | 2015 | Energy, Renewable Energy +1 | [email protected] |
1
Low
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25
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680 | 6 years ago | Series A | 1 | 13.0M | 3592 | 8 oVb 4X9 | |
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EO Charging | - | We don’t just power electric fleets, we power people. ⚡ | Hello, we're EO Charging. We’re on a mission to become the global leader in char... | - |
United Kingdom
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Stowmarket | United Kingdom (HQ) + 1 | 2015 | Design, Energy | [email protected] |
1
Low
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168
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16.8K | 2 years ago | Private Equity | 2 | 97.1M | 32797 | 5 months ago | |
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Deciwatt | - | At Deciwatt we design renewable clean energy solutions that provide power anytim... | At Deciwatt we believe everyone should have access to clean, safe and affordable... | - |
United Kingdom
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London | United Kingdom (HQ) | 2013 | Energy | - |
1
Low
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2
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1.8K (-14%) | 5 years ago | Equity Crowdfunding | 1 | 519.6K | 428 | 8 years ago | |
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Voltaware | - | Electricity Data Intelligence | Voltaware is a start-up electricity monitoring company based in London. We are a... | - |
United Kingdom
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London | United Kingdom (HQ) | 2014 | AI, Analytics +5 | [email protected] |
1
Low
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28
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1.9K (-24%) | 6 years ago | Series A | 1 | 2.8M | 12952 | 6 months 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] |
1
Low
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12
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822 | 4 years ago | Series Unknown | 10 | 2.5M | 1948 | 5 months ago | |
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OilX | - | OilX provides real-time oil data analytics for faster and confident decision-mak... | OilX provides timely and precise oil data analysis and market intelligence repor... | - |
United Kingdom
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London | United Kingdom (HQ) | 2017 | AI, Analytics +5 | [email protected] |
1
Low
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439
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259 (-82%) | 5 years ago | Seed | 2 | 2.2M | 60171 | 11 months ago | |
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Eelpower | - | We make renewables sustainable. | We construct, own and operate large scale, front of meter, energy storage soluti... | - |
United Kingdom
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London | United Kingdom (HQ) | 2017 | Energy, Renewable Energy +2 | [email protected] |
1
Low
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18
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873 (-27%) | 7 years ago | Series Unknown | 1 | 20.0M | 2233 | 6 months ago | |
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SOLIVUS | - | We are the ENERGY behind lightweight solar! ☀️⚡️ | Solivus are on a mission to decarbonise the built environment with lightweight s... | - |
United Kingdom
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London | United Kingdom (HQ) | 2016 | Energy, Renewable Energy | [email protected] |
1
Low
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21
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1.1K (-8%) | 2 years ago | Equity Crowdfunding | 5 | 8.6M | 6130 | 5 months ago | |
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newcleo | - | Developing Lead Fast SMRs to provide the world with a safe, stable power source... | Since launching in 2021 newcleo has quickly established itself as innovator in t... | - |
France
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- | France (HQ) + 3 | 2021 | Energy, Oil and Gas | [email protected] |
1
Low
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576
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14.4K (-53%) | 1 year ago | Series Unknown | 3 | 526.8M | 47025 | 5 months ago | |
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ORCA Hub | - | Offshore Robotics for the Certification of Assets | The Offshore Robotics for the Certification of Assets (ORCA) Hub is a research p... | - |
United Kingdom
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Edinburgh | United Kingdom (HQ) | 2017 | AI, Energy +2 | - |
1
Low
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1
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1.6K (81%) | 4 years ago | Grant | 1 | 2.5M | 1526 | 2 years ago | |
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CCell - Listen to our oce... | - | Ecological coastal protection & marine data | CCell are at the forefront of developing new technologies that enable our marine... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2015 | Energy | [email protected] |
1
Low
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5
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752 | 2 years ago | Equity Crowdfunding | 2 | 542.2K | 696 | 1 year ago | |
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Brighter World Energy | Not active anymore | Brighter World: UK energy provider powering people in remote areas while saving... | By making the switch to Brighter World, not only will you save money on your ene... | - |
United Kingdom
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Manchester | United Kingdom (HQ) | 2016 | Energy, Energy Efficiency +1 | [email protected] |
-1
N/A
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832
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479 | 8 years ago | Seed | 1 | 500.0K | 92478 | 2 G4F a0u | |
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Trojan Energy | - | Serving communities, preserving streets. | Trojan Energy was formed in 2016 with one mission: to ensure everyone benefits f... | - |
United Kingdom
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Aberdeen | United Kingdom (HQ) | 2016 | Energy | - |
1
Low
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54
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540 (49%) | 1 year ago | Series Unknown | 7 | 41.8M | 4002 | 1 year ago | |
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Aceleron | - | Aceleron is a UK-based lithium battery company speeding the shift to renewable e... | Aceleron is a progressive lithium battery company with a global presence, commit... | - |
United Kingdom
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Birmingham | United Kingdom (HQ) | 2016 | Energy, Manufacturing +1 | [email protected] |
1
Low
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644
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1.1K | 3 years ago | Series A | 5 | 10.6M | 7512 | 1 year ago | |
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Circle Gas | - | Clean and affordable cooking | Circle Gas designs, manufactures and deploys Internet of Things (IoT) devices an... | - |
United Kingdom
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London | United Kingdom (HQ) | 2017 | Energy, IoT +1 | [email protected] |
1
Low
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58
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618 (-56%) | 5 years ago | Corporate Round | 1 | 25.0M | 1821 | 1 year ago | |
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Ripple Energy | - | Making clean energy ownership accessible and affordable for everyone, everywhere... | Ripple enables energy consumers around the world to part own large scale wind fa... | - |
United Kingdom
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London | United Kingdom (HQ) | 2017 | Energy, Renewable Energy | [email protected] |
1
Low
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35
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59.2K | 1 year ago | Corporate Round | 4 | 19.2M | 7964 | 4 months ago | |
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Vortexa | - | Building the future of energy markets |
Building the future of energy markets Vortexa tracks more than $3 trillion of w... |
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United Kingdom
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London | United Kingdom (HQ) + 4 | 2016 | Analytics, Energy +2 | - |
1
Low
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177
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38.6K | 7 months ago | Debt Financing | 6 | 82.8M | 52982 | 3 months ago | |
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One Utility Bill | - | We make bills as easy as they should be for tenants, landlords and letting agent... | We make bills as easy as they should be. Bundle your bills into one monthly paym... | - |
United Kingdom
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Newcastle Upon Tyne | United Kingdom (HQ) | 2014 | Energy, Financial Services +1 | - |
1
Low
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113
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19.1K (-9%) | 4 years ago | Series A | 6 | 4.6M | 1273 | 3 months ago | |
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Reactive Technologies Lim... | - | Addressing the challenges of the renewable energy transition by measuring grid i... | Reactive Technologies is a grid resilience technology company helping grid opera... | - |
United Kingdom
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London | United Kingdom (HQ) + 3 | 2010 | Energy, Renewable Energy | - |
1
Low
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76
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2.3K | 1 year ago | Series D | 8 | 47.7M | 6546 | 1 year ago | |
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Hypervolt | - | The smartest way to charge. | Hypervolt is leading provider of residential EV charging solutions. Our mission... | - |
United Kingdom
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London | United Kingdom (HQ) + 1 | 2021 | Energy, Manufacturing | [email protected] |
1
Low
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56
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6 (-100%) | 1 year ago | Series A | 2 | 11.5M | 8728 | 10 months ago | |
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RHEON LABS | - | RHEON™ is an energy-absorbing super polymer. Born out of NASA & developed for... |
Engineered with RHEON™ – the energy-absorbing supermaterial. Born out of NASA &... |
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United Kingdom
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London | United Kingdom (HQ) | 2018 | Energy, Information Technology +1 | - |
1
Low
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36
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6.2K | 4 years ago | Series A | 2 | 11.1M | 4000 | 3 months ago | |
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Blue Ocean Seismic Servic... | - | Next-generation low cost and reduced carbon emission ocean bottom seismic acquis... | Our vision is to disrupt the marine seismic acquisition industry by using swarms... | - |
United Kingdom
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Farnborough | United Kingdom (HQ) | 2019 | Energy, Energy Efficiency +1 | [email protected] |
1
Low
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9
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94 | 4 years ago | Series A | 1 | 10.0M | 2450 | 1 year ago | |
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Advizzo | - | Helps Energy & Water companies use Behavioural & Data Science to optimize operat... | Advizzo transforms how millions of people think about their water and energy con... | - |
United Kingdom
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London | United Kingdom (HQ) | 2015 | AI, Analytics +6 | [email protected]/[email protected] |
1
Low
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14
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675 | 5 years ago | Series A | 5 | 2.4M | 1326 | 6 months ago |