Introducing Rainbow: Powering your journey to a more sustainable and certain future


Welcome to Rainbow Energy. With the urgent need to address the climate crisis and the rising costs of traditional energy sources, we’re here to power household and small business decarbonisation; helping you to take control of your energy supply and contribute to a greener future. 


We're excited to announce our official launch following a period in stealth mode, as well as the appointment of Andrew Mullinger, co-founder of Funding Circle, as our CEO. Together with our co-founders Stefan Cooksammy and Neil Cockerill, and the whole Rainbow team, we're on a mission to empower you to become your own renewable energy provider.


Today we’re helping to lay the foundations for a sustainable energy future by installing solar panels, air source heat pumps, and car charging units, ensuring that you have the infrastructure required to generate clean, renewable energy. Once you're set up with our renewable energy solutions, we aim to become your preferred energy partner. Our commitment to exceptional customer service, combined with cutting-edge technology, will enable you to decarbonise your energy needs efficiently and cost-effectively. Our long-term vision includes the development of a decentralised grid, allowing for the transfer and management of energy between customers.

At Rainbow, we understand the importance of controlling costs and ensuring that energy solutions are financially viable. The falling prices of solar panels, down by over 60 percent since 2010,* coupled with recent increases in gas bills, make solar installations a smart investment, typically paying for themselves within seven years.** One of our customers, JKS Boyles, a drilling equipment manufacturer based in Mansfield, Nottinghamshire, estimates a payback period of just four years and expects to save £1.5 million in energy bills over the next 25 years. Small businesses are currently eligible for capital allowances claims and local grants, and more than 900 businesses have already claimed £7 million. 


We're really excited to have Andrew Mullinger on board as our CEO. With his start-up experience and dedication to supporting small businesses and individuals, he shares our vision of combating the climate crisis and driving the widespread adoption of renewable energy. "The climate crisis is undeniably the most pressing issue of our time," says Mullinger. "I couldn't pass up the opportunity to be part of Rainbow's mission to empower households and small businesses to take control of their energy supply and become their own provider."

Rainbow Energy was founded by Neil Cockerill and Stefan Cooksammy, who recognised the need for larger-scale renewable asset installation. By combining their financial expertise with sustainability and installation experience across the broader team, we're unlocking the renewable installation market, making it easier for households and small businesses like yours to adopt clean energy solutions and take control of your energy costs. 

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