Top 45 Renewable Energy Angel Investors in United Kingdom (August 2026)

Portfolio highlights

• a0.dev — a0.dev enables mobile developers to efficiently create high-quality applications by generating customized React Native projects.
• Bindwell — Making new pesticides with AI
• Revision Dojo — Thousands of practice questions, study notes, and flashcards, all in one place. Supercharged with Jojo AI.

Portfolio highlights

• Zeigo — Zeigo by Schneider Electric provides sustainability software for efficient carbon reduction and supply chain decarbonization, aiming for a carbon-free future.
• RootWave — RootWave is an electronics company that develops tools that kill weeds it enables farmers to control weeds on their farm. Its technology is an alternative substitute for herbicides and other weed control chemicals. The company was founded in 2012 and headquartered in Warwickshire, United Kingdom.
• Sniffer Robotics — Comprehensive methane emissions detection and quantification, advanced imagery and analytics; Sniffer Robotics provides advanced solutions that benefit the environment.

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• GreenSpur Wind — Time To ACT plc supports the global transition to Net Zero through the development and commercialisation of world-beating clean technologies

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• Sterecycle — GUCI77 menghadirkan link gacor main slot premium dengan permainan resmi, proses transaksi cepat, dan peluang menang lebih besar. Rasakan sensasi bermain yang bikin hari makin asyik setiap saat.

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• GoJoe — Ditch the step challenge apps and employee engagement platforms and boost inclusivity and engagement with GoJoe.The employee engagement and wellbeing app that people actually use.
• STOCKED — Award winning dishes. Delivered to your door. Pack to Plate in 4 minutes. Choose from our wide range of British meat, Plant Based and Family Favourites. Revolutionary meals, ready in minutes, delivered to your door.
• Coopah Running — Try Coopah free. Cancel anytime. Personalised running plans to help you smash your race goals.

Portfolio highlights

• Uangcermat — UangCermat seeks to close the gap between South East Asia's underbanked and unbanked populations and their access to sustainable financial services and products.
• Karzo — Karzo is the fist B2B logistics platform in Myanmar for connecting trucking suppliers with businesses for reliable distribution.
• Continuum Industries — Continuum Industries is a developer of Optioneer, the leading software for linear infrastructure optioneering.

Portfolio highlights

• Robin — Robin AI is a legal tech company based in London, made up of engineers, lawyers, scientists and operations specialists.
• iSIZE Technologies — Sony Interactive Entertainment is a global leader in the interactive entertainment industry, creating innovative gaming experiences, platforms, and technology for players worldwide.
• Breathe Battery Technologies — Breathe Battery Technologies is a research-led technology company developing advanced battery management algorithms

Portfolio highlights

• Habito — We're the Treating Customers Fairly Champion of 2023 as voted for in the British Bank Awards. We're here to make mortgages easier - no paperwork, no stress and no fees.
• Lassie — AI that runs the doctor's office.
• Lightyear — Lightyear is a simple and approachable way to invest your money globally without unnecessary barriers and fees.

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• Cepro — We work hand-in-hand with developers, impact investors, home owners and occupiers to build clean, affordable community smart grids.

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• Nova Pangaea Technologies — NPT is a cleantech company that has developed a revolutionary process technology called REFNOVA. REFNOVA allows customers to converts non-food plant residues into sustainable products such as biochar, activated carbon, biofuel, biopolymers and biochemicals. Our products help customers replace fossil based products and enable decarbonisation.

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• UrbanChain — Consumers, prosumers, and generators are welcome to make their marketplace.

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• Parallel Carbon — Affordable direct air capture technology based on wind, sunshine, and abundant minerals. Carbon removal and reduction, in Parallel.

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• Firenze — Firenze aims to expand financial services by extending investment-backed lending to a wider audience, recognizing its importance in wealth creation and preservation. The founding team aims to democratize Lombard lending, making it accessible to all, while focusing on mass affluent clients.
• farillio — They know first-hand how tough it can be to start out in business – and that keeping your business going strong doesn’t get easier. They understand how not knowing, or having access to what you want, gets in your way. They understand how that wastes your time, makes you unnecessarily anxious and costs you way too much money. They know law,business and technology inside out. Their team members have won awards for legal advice, excellence in technology, built online banks, apps and wearables. They’ve held relevant senior roles in leading, progressive household brands, and almost all of us have founded at least one business before. Their experience tells us there’s a better way to do business, and they knew the very best people to build their solution. So, they have joined together with a brilliant community of legal and business experts, each committed to making sure that you can run your business on your terms and in the Farillio way – simply, quickly, confidently and affordably.
• Project Etopia — Connecting energy, construction and intelligent technologies to revolutionise the built environment and shape a sustainable future.

Portfolio highlights

• Unitary — We detect harmful content with context-aware AI to keep brands and platforms safe online.
• Cordless — Bridging the gap between voice and text
• Fabric — Fabric is an AI-powered workspace and file manager for people and groups.Fabric is a self-organizing multiplayer workspace.

Portfolio highlights

• Circular Refining and Products Company — Circular Refining & Products Company is developing and deploying solutions to accelerate net zero target achievement. It employs fossil-fuel-free hydrogen production technologies and model systems to help public and private sector natural gas and diesel users meet decarbonization and net-zero targets sooner than previously anticipated.

Portfolio highlights

• Bourn — Bourn's technology is designed to automate cash flow management, offering SMEs fast access to capital.
• Alfa AI — Alfa AI is a recruitment technology company specializing in AI-driven hiring solutions.
• Emblematic — The first AI-driven Agentic Automation platform, designed to fully automate and enhance the accuracy of Finance Operations, including Bookkeeping, IFRS/GAAP Compliance, Reconciliations, and more.

Portfolio highlights

• Yayzy — Your free carbon footprint calculator. Learn about your impact. Fund the best climate solutions. Plant trees. Fight climate change.
• Hiyacar — Discover safe, quality peer-to-peer car rental. Rent a fully insured car from trusted neighbours or list your vehicle to make extra money. Sign up now!
• Space Tech Ventures — Principal-led investment and acceleration for orbit, satellite, launch and space-AI founders.

Portfolio highlights

• Dognosis — unleashing canine superpowers to democratize early cancer detection
• Fundably — Fundably - Get The Right UK Business Loan | Access £1k-£2m
• VIAN Therapeutics — VIAN Therapeutics is an early-stage biotechnology company focused on transforming retinal disease treatment. With a first-in-class, non-invasive eyedrop as its lead product, VIAN aims to replace invasive injections for conditions like age-related macular degeneration (AMD) and diabetic macular edema (DME). Backed by strong preclinical data andongoing clinical testing, VIAN is positioned to address significant unmet medical needs and disrupt the $15 billion retinal disease market.

Portfolio highlights

• Renew Risk — Renew Risk offers science-driven risk analytics and products to secure renewable energy infrastructure and support the energy transition.

Portfolio highlights

• June.ai — Discover June, a digital communication hub that replaces your email experience. June creates a new world for your existing email that gives you more control, interactivity and efficiency.
• Panthalassa — We're harnessing renewable energy in the open ocean and delivering it around the world. Engineered in Portland, Oregon.
• Enclave — Enclave is a cybersecurity startup that builds an AI‑native code‑security agent for software development and DevSecOps teams. It analyzes entire codebases to triage scanner noise and surface only the vulnerabilities that truly matter, using cross‑file taint analysis and trust‑boundary mapping. The platform helps engineering teams ship code fasterwhile reducing the risk of exploitable security issues in production. Enclave primarily targets software companies and enterprises that prioritize secure, high‑velocity development.

Portfolio highlights

• Arro — Discover the shared daily operating system that helps you get more from life and work. Get to Day Zero together.
• SPOKE — Music and lyricism-led mindfulness, aimed at helping the world's most creative minds feel at ease.
• Wax Poetics — Rare memorabilia. Timeless stories. Since 2001.

Portfolio highlights

• Circular Refining and Products Company — Circular Refining & Products Company is developing and deploying solutions to accelerate net zero target achievement. It employs fossil-fuel-free hydrogen production technologies and model systems to help public and private sector natural gas and diesel users meet decarbonization and net-zero targets sooner than previously anticipated.

Portfolio highlights

• Cepro — We work hand-in-hand with developers, impact investors, home owners and occupiers to build clean, affordable community smart grids.

Portfolio highlights

• Crowdz — Make accounts receivables a thing of the past with a competitive invoice auction for selling your invoices with invoice financing
• Mesg.ai — Mesg.ai automates your research and copywriting process, so your sales team can send personalised outreach emails in one click
• SEaB Energy — SEaB Energy designs, develops and manufactures micro anaerobic digestion systems which create biogas, water and fertiliser. The patented units can be combined with Combined Heat & Power units, Biogas Fuel Cell or Biogas boiler to use the gas. The fertiliser is available in liquid or solid bagged format.The company is headquartered inLondon. SEaB Energy has developed and patented Muckbuster® and Flexibuster™ as compact easy to install turnkey Anaerobic Digestion (AD) systems in shipping containers. The systems are modular, easily configured and scalable to address food waste and other bio wastes directly at the sites of smaller waste producers who typically generate between 200 and 1000 tonnes of waste per year.Whether you are a farmer, a food processor, a retailer or you are in the catering and accommodation markets, Muckbuster® and Flexibuster™ can reduce your operational costs, enhance your sustainability and generate an attractive return on your investment.

Portfolio highlights

• Centivax — Centivax is a healthcare-based agency that provides biotechnology, pharmaceutical, medical device manufacturing, and therapeutic services.
• The Interaction Company of California — The proactive AI assistant on Apple Messages, WhatsApp, Telegram, and more. Texts like a human, really knows you, and integrates with your life in dozens of ways.
• SendCutSend — Online sheet metal fabrication service. Get custom parts delivered in just a few days. Upload STEP or DXF files for instant pricing!

Portfolio highlights

• yhangry — YHANGRY is a private chef platform where users can book a professional chef to come cook for them at home.
• Fuse Energy — Fuse Energy is building the future of energy with cheaper tariffs, better service, and greener goals. Switch to Fuse Energy today
• Fuse Energy — Tesseract offers commission-free energy; 10x cheaper; 10x better, and 100 percent renewable energy.

Portfolio highlights

• Swayable — Swayable is the industry gold standard for creative pre-testing. Run RCT experiments on real audiences and prove ad impact in as little as 24 hours. Trusted by DoorDash, Meta, Amazon, and 100+ global brands.
• Detect — Working on developing rapid molecular tests for point of need care
• Fuse Energy — Tesseract offers commission-free energy; 10x cheaper; 10x better, and 100 percent renewable energy.

Portfolio highlights

• Fuse Energy — Fuse Energy is building the future of energy with cheaper tariffs, better service, and greener goals. Switch to Fuse Energy today
• Sportradar — Sportradar is a global provider of sports betting and sports entertainment products and services. The company is well-positioned at the intersection of the sports, media and betting industries, providing sports federations, news media, consumer platforms and sports betting operators with a range of solutions to help grow their business.Sportradarcommitment to excellent service, quality and reliability that makes us the trusted partner of more than 1,600 customers in over 120 countries and official partner of the NBA, NHL, MLB, NASCAR and FIFA. Sportradar cover more than 750,000 events annually across 83 sports. With deep industry relationships, Sportradar is not just redefining the sports fan experience; it also safeguards the sports themselves through its Integrity Services division and advocacy for an integrity-driven environment for all involved.
• Fuse Energy — Tesseract offers commission-free energy; 10x cheaper; 10x better, and 100 percent renewable energy.

Portfolio highlights

• Habito — We're the Treating Customers Fairly Champion of 2023 as voted for in the British Bank Awards. We're here to make mortgages easier - no paperwork, no stress and no fees.
• Tern Group — Tern Group is an AI Platform to hire and relocate top healthcare talents globally, faster and cheaper. TERN is a full-stack solution to source and relocate top-tier medical and engineering talent from India, North Africa, South Africa, and Central Asia and the approach ensures a seamless, ethical, and transparent migration process, drasticallycutting complexity and shaving costs for healthcare systems.
• Red Bull KTM Tech3 — Red Bull KTM Tech3 is a motorcycle racing team that competes in the MotoGP and Moto3 World Championships. The team fields riders on KTM machinery across the premier and lightweight Grand Prix classes. It participates in the full world championship calendar, racing at circuits such as Sachsenring, Assen, Silverstone, MotorLand Aragón, Misano, andothers. Red Bull KTM Tech3 manages rider development, technical preparation, and race operations for each Grand Prix round.

Portfolio highlights

• Centivax — Centivax is a healthcare-based agency that provides biotechnology, pharmaceutical, medical device manufacturing, and therapeutic services.
• The Interaction Company of California — The proactive AI assistant on Apple Messages, WhatsApp, Telegram, and more. Texts like a human, really knows you, and integrates with your life in dozens of ways.
• SendCutSend — Online sheet metal fabrication service. Get custom parts delivered in just a few days. Upload STEP or DXF files for instant pricing!

Portfolio highlights

• Stackfix — Stackfix operates as a software comparison platform.
• Rivan Industries — Rivan Industries designs and builds modular, vertically integrated, synthetic fuel plants.
• Asymmetric Security — Asymmetric Security is an AI-native cybersecurity startup specializing in digital forensics and incident response. It combines elite forensic experts with proprietary AI to accelerate investigations, especially Business Email Compromise (BEC) attacks, at less than half the cost of competitors while shrinking timelines from days to hours.

Portfolio highlights

• BirdyChat — A modern work chat app for professionals. Start conversations with anyone using their work email. Collaborate and grow your network.
• ScamGuardian.AI — ScamGuardian develops AI-powered victim simulations to capture actionable scam intelligence
• Rivan Industries — Rivan Industries designs and builds modular, vertically integrated, synthetic fuel plants.

Portfolio highlights

• Prop Sustainable — Operating at the intersection of renewable energy, proptech, and real estate, Prop Sustainable supports institutional landlords, developers, and asset managers in procuring renewable energy solutions. Specifically, we provide expertise in the adoption of EV charging infrastructure and Solar PV installations. We maintain that renewable energy isfundamentally a business of real estate, given the asset always needs to exist on a building or a parcel of land. Viewing it through this lens enables us to overcome barriers and align bottom-line priorities with ESG goals.Leveraging proprietary data, GIS platforms, and advanced PropTech, we identify viable sites for renewable energy adoption. We then engage our extensive network of renewable energy suppliers across the UK to run a tendering process, ensuring our clients secure the most competitive rates for solutions that are both sustainable and commercially additive. Acting as a translation device between the renewable energy and real estate sectors, we simplify complex processes and align priorities. Our innovative business model makes our services entirely free for clients—a first of its kind in the industry.

Portfolio highlights

• Piclo — Piclo is an independent marketplace making electricity grids smart, flexible, and sustainable. The Piclo marketplace enables renewables, batteries, and electric vehicles to provide local flexibility to distribution networks, easing the complex transition to a low-carbon future and delivering low-cost and resilient grids. It encourages greaterparticipation, standardization, and scale in order to level the playing field and accelerate the transition to Net Zero.
• SMPnet — Revolutionising power grid management with cutting-edge solutions. Join us to shape a sustainable and efficient energy landscape.
• Interpac — Interpac has developed a new packaging production system the corrugator which does not use steam in the manufacturing process. The Interpac system is a revolutionary process that enables on-demand production which significantly reduces packaging costs and emits 90% less greenhouse gases than conventional processes.

Portfolio highlights

• Qutwo — We unite Qutwo OS and world-class AI and quantum scientists with the most forward-looking enterprises to develop competitive edge through classical AI, hybrid, and full quantum systems. We tackle the most challenging problems in AI computing.
• Viktor — Viktor is the AI employee that lives in Slack and Microsoft Teams, connects to 3,200+ tools, and does the work. Reports, dashboards, code, campaigns. Start free.
• General Intuition — The frontier lab for acting in space and time.

Portfolio highlights

• The Thinking Pod Innovations — TTPi Transforming electronics for sustainable transport and energy systems Delivering energy efficiency We partnered with ITT and the University of Nottingham to develop the technology at the heart of the intelligent motor, which adjusts its speed in response to changing workload, lowering energy usage and CO2 emissions. The first of its kind, the VIDAR motor

Portfolio highlights

• The Thinking Pod Innovations — TTPi Transforming electronics for sustainable transport and energy systems Delivering energy efficiency We partnered with ITT and the University of Nottingham to develop the technology at the heart of the intelligent motor, which adjusts its speed in response to changing workload, lowering energy usage and CO2 emissions. The first of its kind, the VIDAR motor

Portfolio highlights

• Ryder — 60s Setup, Secure Signing, EAL6+ Secure Element, TapSafe Recovery, IP68 Rating, Encrypted NFC.
• VeryAI — VeryAI develops a privacy-preserving identity verification platform using palm-scan biometrics on the Solana blockchain.
• worm.wtf — worm.wtf is the prediction marketplace for the Solana ecosystem.

Portfolio highlights

• heata — heata supports people living in fuel poverty, It enables companies to significantly reduce their carbon footprint while saving families up to £450 per year on their energy bills. It is a ground-breaking green distributed compute network that uses computation waste heat to heat people's homes' water.
• Nokken — Nokken creates the most efficient & economic platform possible for hotel operators & landowners to start or diversify a retreat cabin hospitality offering.
• Katrick Technologies — We are delivering a world-first project, to Capture, Converge and Convert vibrations (thermal/mechanical) from engines by using innovative technology

Portfolio highlights

• Hgen — Hgen provides affordable green hydrogen for deep decarbonization.
• Heimdal — Thinking big, first, to build the worlds largest most scalable DAC facilities. We operate Bantam, America's largest DAC facility.
• Dawn Aerospace — Delivering hardware to space. Positioning satellites on orbit. Returning products to Earth.

Portfolio highlights

• Aptuno — Aptuno - Busco apartamento o casa en arriendo
• Atrato — Atrato is a fintech company that allows affiliated merchants to offer a safe, accessible, and reliable buy now, pay later method to their customers. Customers can use Atrato to make purchases at affiliated stores, either online or in person, and pay them off over the course of up to 24 months without using a credit or debit card. Atrato'smission is to provide fair financial tools and services that improve Latin America's quality of life.
• Grin Scooters — Grin Scooters is a software company that operates network of operational shared electric scooters. Currently, Grin only operates in Mexico City, Guadalajara, Monterrey, Sao Paulo and Bogota but it has plans to expand to other cities throughout Latin America.

Portfolio highlights

• Bequest — Digital estate planning made easy for professionals and individuals. Securely protect online accounts, cryptocurrencies, emails, media, documents and more.
• Disputed — FinLegal is legaltech for the business of disputes. Our solutions allow you to fund and insure your litigation through litigation funding and after-the-event insurance, automate volume and class actions and get more clients through working with marketing service providers.
• Robin — Robin AI is a legal tech company based in London, made up of engineers, lawyers, scientists and operations specialists.

Portfolio highlights

• Bequest — Digital estate planning made easy for professionals and individuals. Securely protect online accounts, cryptocurrencies, emails, media, documents and more.
• Disputed — FinLegal is legaltech for the business of disputes. Our solutions allow you to fund and insure your litigation through litigation funding and after-the-event insurance, automate volume and class actions and get more clients through working with marketing service providers.
• Robin — Robin AI is a legal tech company based in London, made up of engineers, lawyers, scientists and operations specialists.

Portfolio highlights

• Swurf — The work surfing platform. Making it easy for venues to welcome a new community of remote workers.
• Flock Mobility — A dedicated fleet of electric vehicles which perform a host of shared transport functions through a single platform.
• Jump Ship Brewing — Award-winning alcohol-free craft beer from Scotland. Gluten-free, vegan, 0.5% ABV. World's best non-alcoholic lager. Buy Scotland's best alcohol free beer online.

Portfolio highlights

• Alfa AI — Alfa AI is a recruitment technology company specializing in AI-driven hiring solutions.
• TerraSpark — TerraSpark Energy specializing in software solutions for renewable energy asset management. The product, TerraSpark Hub, provides comprehensive oversight of commercial and technical data for green energy assets like solar and wind projects.
• Recupere Metals — Recupere Metals focused on recycling copper scrap into high-quality electrical wires. It uses a patented mechanical process enhanced by AI to boost conductivity from impure scrap, bypassing energy-intensive smelting.