Top 15 Renewable Energy Angel Investors in United Kingdom (May 2026)

Portfolio highlights

• Zeigo — Zeigo is a company formed by a team of like-minded clean energy & tech pioneers with a mission to help companies transition to a low carbon economy.
• Ecolectro — Ecolectro is solving the biggest challenges in making Green Hydrogen. Our alkaline ion-exchange membranes and polymers make clean fuel and decarbonize industry.
• Sniffer Robotics — Comprehensive methane emissions detection and quantification, advanced imagery and analytics; Sniffer Robotics provides advanced solutions that benefit the environment.

Portfolio highlights

• Cargofy — Cargofy it's a mobile assistant, kind of a "Siri" but for truck drivers. We help truckers access to high paying loads through our app, and receive discounts on fuel, maintenance, and truck parts.
• MONET — Embedded finance for agencies and B2B platforms. Frictionless access to white-labelling B2B credit, global payments and new revenue streams. Offer white-label invoice finance to your network, driving growth for you and your suppliers.
• Connect4 — The client-centric platform for you and your team. Consistently deliver outstanding client meetings. Every single time.

Portfolio highlights

• Warp — Warp is a Rust-based terminal reimagined to focus on productivity, efficiency, and speed. It is now available on MacOS. Warp has an IDE-like input area and it groups input and output together into atomic units. It also features Warp AI, which explains errors and suggests commands using AI.
• ArteraAI — Discover the power of Personalized Precision Medicine & AI Cancer Therapy with ArteraAI. Transforming cancer therapy through innovation.
• HiNOTE — Hinote is a unique, expressive method of mobile communication for people who enjoy flexing, staying still, and delighting.

Portfolio highlights

• Robin AI — Robin AI is a legal tech company based in London, made up of engineers, lawyers, scientists and operations specialists.
• iSIZE Technologies — Bringing Efficient, Intelligent And Sustainable Solutions To Video Delivery
• Breathe Battery Technologies — Breathe Battery Technologies is a research-led technology company developing advanced battery management algorithms

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

• Hgen — Hgen provides affordable green hydrogen for deep decarbonization.
• Heimdal — Heimdal is on a mission to decarbonize the world. Every year the world emits 40 billion tonnes of CO2 into the atmosphere. Using our process we permanently capture and store carbon dioxide from the sky while producing clean drinking water. We are harnessing cheap renewable electricity and the sea to undo past and future emissions of CO2.
• Proper — Proper provides expert property management bookkeeping for property managers, asset managers, and anyone in the world of property. (213 kB)

Portfolio highlights

• Zinobe — Zinobe has operated in Colombia since 2012 and develops online financial products for the consumer and small business sectors. The company is focused on using technology to provide the highest level of customer experience and has developed a data centric credit model to help target underserved markets in Colombia. Zinobe is backed by firms such asQED Investors, a U.S. based venture capital firm specializing in disruptive financial services companies in the U.S., U.K. and Latin America. For more information, please visit www.zinobe.com, www.lineru.com.
• Atrato — Atrato is a leading buy now pay later company for omnichannel merchants in Mexico
• 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

• Nova Pangaea Technologies (NPT) — 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.

Portfolio highlights

• CEPRO — Local renewables are fast becoming the most affordable way to supply energy, providing a unique opportunity to regenerate neighbourhoods, create long-term economic value and build climate resilience. Get in touch now: hello@cepro.co.uk

Portfolio highlights

• Circular Refining and Products Company — Hydrogen & Ammonia for industry and logisitics

Portfolio highlights

• Circular Refining and Products Company — Hydrogen & Ammonia for industry and logisitics

Portfolio highlights

• Renew Risk — Renew Risk is a software development firm that offers B2B SaaS solutions based on deep science for optimizing the financial lifetime of major renewable energy assets.

Portfolio highlights

• CEPRO — Local renewables are fast becoming the most affordable way to supply energy, providing a unique opportunity to regenerate neighbourhoods, create long-term economic value and build climate resilience. Get in touch now: hello@cepro.co.uk

Portfolio highlights

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

Portfolio highlights

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