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 Flag United Kingdom London United Kingdom (HQ) 2018 Energy, Energy Efficiency [email protected]
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3.7K (-31%) 6 years ago Series A 3 120.0K 1728 4 years ago
Energy Shift (Techstars ā€˜... - 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...
- United Kingdom Flag United Kingdom London United Kingdom (HQ) 2019 Energy, Platforms +1 [email protected]
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395 (-100%) 3 years ago Pre Seed 3 142.9K 1847 4 years ago
Utonomy Ltd - Utonomyā€˜s retrofittable technologies help gas network operators achieve their de... Utonomy has developed innovative technology to automatically optimise the pressu... - United Kingdom Flag United Kingdom Southampton United Kingdom (HQ) 2015 Energy, Logistics +2 [email protected]
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436 2 years ago Series Unknown 6 7.7M 635 6 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2014 Energy, Renewable Energy [email protected]
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396
94 (-100%) 7 years ago Grant 8 551.3K 66637 5 8rO WVB
Cheesecake Energy Ltd - Making long-duration storage affordable Cheesecake Energy is lowering the cost of long-duration energy storage, turning... - United Kingdom Flag United Kingdom Nottingham United Kingdom (HQ) 2016 Energy, Industrial -
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1.4K (62%) 2 years ago Grant 4 14.0M 2653 8 months ago
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 Flag United Kingdom Newcastle Upon Tyne United Kingdom (HQ) 2017 B2B, Energy +4 [email protected]
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968 7 years ago Series Unknown 1 500.0K 67536 10 UDn hbZ
ENECHANGE Innovation Limi... - Changing energy for a better world ENECHANGE Innovation Limited identifies and develops energy technology solutions... - United Kingdom Flag United Kingdom London United Kingdom (HQ) + 1 2016 Analytics, Big Data +1 [email protected]
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27 (-100%) 5 years ago Grant 6 621.9K 2085 7 ln9 K5q
Bramble Energy Limited - Powering Net Zero Bramble is a technology company on a mission to drive transformational change in... - United Kingdom Flag United Kingdom Crawley United Kingdom (HQ) 2015 Consumer Electronics, Energy +4 [email protected]
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1.8K (-10%) 2 years ago Grant 6 55.7M 13249 5 months ago
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...
- United Kingdom Flag United Kingdom Southampton United Kingdom (HQ) 2016 Energy [email protected]
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566 5 years ago Corporate Round 2 606.9K 3069 10 6db Eoz
Venterra Group - Helping Wind Power Grow Our purpose is to help the world’s energy transition through wind power. 

As t...
- United Kingdom Flag United Kingdom London United Kingdom (HQ) 2021 Energy, Renewable Energy -
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3.4K (31%) 1 year ago Series Unknown 4 231.8M 11528 5 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2020 Energy -
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2.4K (20%) 3 years ago Grant 1 110.0K 5118 5 months ago
enee.io - Energy Intelligence enee.io increases access to reliable and affordable energy by improving the life... - United Kingdom Flag United Kingdom Manchester United Kingdom (HQ) 2019 Energy, Manufacturing +1 [email protected]
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1.4K (206%) 1 year ago Grant 4 2.1M 2031 5 months ago
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 Flag United Kingdom London United Kingdom (HQ) + 4 1909 Energy, Industrial +2 [email protected]
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70570
2.3M (10%) 10 months ago Grant 2 12.0B 3665167 5 months ago
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 Flag United Kingdom London United Kingdom (HQ) + 1 2018 Energy, Renewable Energy -
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575 (-100%) 4 years ago Seed 3 800.0K 7744 5 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2017 Energy -
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12.2K (-10%) 2 years ago Series A 5 570.0K 2228 11 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2015 Energy, Renewable Energy +1 [email protected]
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3664
10.8M (9%) 1 year ago Private Equity 8 2.9B 228203 6 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2015 Energy, Renewable Energy +1 -
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758 (-75%) 3 years ago Grant 2 3.6M 44477 9 Dyc Ihx
Tonik Energy - Energy for the switched on. Tonik Energy Limited – in Administration (ā€œthe Companyā€)

Matthew James Cowlish...
- United Kingdom Flag United Kingdom Birmingham United Kingdom (HQ) 2015 Energy, Renewable Energy +1 [email protected]
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276 6 years ago Series A 1 13.0M 3592 5 GWs ZCW
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 Flag United Kingdom Stowmarket United Kingdom (HQ) + 1 2015 Design, Energy [email protected]
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168
16.8K 2 years ago Private Equity 2 97.1M 32797 5 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2013 Energy -
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1.8K (-14%) 5 years ago Equity Crowdfunding 1 519.6K 428 8 years ago
Voltaware - Electricity Data Intelligence Voltaware is a start-up electricity monitoring company based in London. We are a... - United Kingdom Flag United Kingdom London United Kingdom (HQ) 2014 AI, Analytics +5 [email protected]
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1.9K (-24%) 6 years ago Series A 1 2.8M 12952 6 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2014 Agriculture, Energy +2 [email protected]
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186 4 years ago Series Unknown 10 2.5M 1948 5 months ago
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 Flag United Kingdom London United Kingdom (HQ) 2017 AI, Analytics +5 [email protected]
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259 (-82%) 5 years ago Seed 2 2.2M 60171 11 months ago
Eelpower - We make renewables sustainable. We construct, own and operate large scale, front of meter, energy storage soluti... - United Kingdom Flag United Kingdom London United Kingdom (HQ) 2017 Energy, Renewable Energy +2 [email protected]
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873 (-27%) 7 years ago Series Unknown 1 20.0M 2233 6 months ago
SOLIVUS - We are the ENERGY behind lightweight solar! ā˜€ļøāš”ļø Solivus are on a mission to decarbonise the built environment with lightweight s... - United Kingdom Flag United Kingdom London United Kingdom (HQ) 2016 Energy, Renewable Energy [email protected]
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1.1K (-8%) 2 years ago Equity Crowdfunding 5 8.6M 6130 5 months ago
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 Flag France - France (HQ) + 3 2021 Energy, Oil and Gas [email protected]
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576
14.4K (-53%) 1 year ago Series Unknown 3 526.8M 47025 5 months ago
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 Flag United Kingdom Edinburgh United Kingdom (HQ) 2017 AI, Energy +2 -
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1.6K (81%) 3 years ago Grant 1 2.5M 1526 2 years ago
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 Flag United Kingdom London United Kingdom (HQ) + 1 2015 Energy [email protected]
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381 2 years ago Equity Crowdfunding 2 542.2K 696 1 year ago
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 Flag United Kingdom Manchester United Kingdom (HQ) 2016 Energy, Energy Efficiency +1 [email protected]
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434 8 years ago Seed 1 500.0K 8529 5 H6K hos
Trojan Energy - Serving communities, preserving streets. Trojan Energy was formed in 2016 with one mission: to ensure everyone benefits f... - United Kingdom Flag United Kingdom Aberdeen United Kingdom (HQ) 2016 Energy -
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540 (49%) 1 year ago Series Unknown 7 41.8M 4002 1 year ago
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 Flag United Kingdom Birmingham United Kingdom (HQ) 2016 Energy, Manufacturing +1 [email protected]
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307
1.1K 3 years ago Series A 5 10.6M 7512 1 year ago
Circle Gas - Clean and affordable cooking Circle Gas designs, manufactures and deploys Internet of Things (IoT) devices an... - United Kingdom Flag United Kingdom London United Kingdom (HQ) 2017 Energy, IoT +1 [email protected]
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618 (-56%) 5 years ago Corporate Round 1 25.0M 1821 1 year ago
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 Flag United Kingdom London United Kingdom (HQ) 2017 Energy, Renewable Energy [email protected]
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59.2K 1 year ago Corporate Round 4 19.2M 7964 4 months ago
Vortexa - Building the future of energy markets Building the future of energy markets

Vortexa tracks more than $3 trillion of w...
- United Kingdom Flag United Kingdom London United Kingdom (HQ) + 4 2016 Analytics, Energy +2 -
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177
38.6K 7 months ago Debt Financing 6 82.8M 52982 3 months ago
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 Flag United Kingdom Newcastle Upon Tyne United Kingdom (HQ) 2014 Energy, Financial Services +1 -
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19.1K (-9%) 4 years ago Series A 6 4.6M 1273 3 months ago
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 Flag United Kingdom London United Kingdom (HQ) + 3 2010 Energy, Renewable Energy -
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2.3K 1 year ago Series D 8 47.7M 6546 1 year ago
Hypervolt - The smartest way to charge. Hypervolt is leading provider of residential EV charging solutions. Our mission... - United Kingdom Flag United Kingdom London United Kingdom (HQ) + 1 2021 Energy, Manufacturing [email protected]
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564 (-100%) 1 year ago Series A 2 11.5M 8728 10 months ago
RHEON LABS - RHEONā„¢ is an energy-absorbing super polymer. Born out of NASA & developed for... Engineered with RHEONā„¢ – the energy-absorbing supermaterial.

Born out of NASA &...
- United Kingdom Flag United Kingdom London United Kingdom (HQ) 2018 Energy, Information Technology +1 -
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6.2K 4 years ago Series A 2 11.1M 4000 3 months ago
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 Flag United Kingdom Farnborough United Kingdom (HQ) 2019 Energy, Energy Efficiency +1 [email protected]
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94 4 years ago Series A 1 10.0M 2450 1 year ago
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 Flag United Kingdom London United Kingdom (HQ) 2015 AI, Analytics +6 [email protected]/[email protected]
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675 5 years ago Series A 5 2.4M 1326 6 months ago