Windfall
Energy
Windfall Energy was founded in 2025 with the aim of bringing cheaper, cleaner energy to everyone - not just people living in big houses who could afford it.
Since then, we’ve been speaking to people around the UK about their energy usage. Particularly people who rent or live in flats who feel powerless to do anything about their increasing bills.
Our technology is based on the premise that there’s plenty of cheap green energy on the grid these days, but not necessarily at the times you need it. So if you can decouple when energy is purchased from when it is used, you can save money.
We first tested some of our theories by developing a smart plug that we got into the hands of 100 users. Building on that, we then tested a beta battery product which we installed in home in and around London. We’re now excited to be launching pre-orders for the Windfall Battery.
Ashley and Rob met at a Green IoT Meetup, and were both looking for ways to use their skills and experience to have a positive impact on the climate crisis. They shared a frustration that it’s difficult to make a difference to your energy consumption when you live in a flat.
After spending time researching solutions, and visiting Germany to understand the emerging Balkonkraftwerk movement, it became clear that there was a wide gap in the market for products designed specifically with this audience in mind.
Team
Ashley Grealish
Start-up engineering leader, with experience creating innovative solar battery systems which brought clean energy to 500,000+ homes in rural East Africa. Ashley previously creating the largest platform for managing Utility EV Smart Charging programs as VP of Engineering and CTO at ev.energy.
Co-founder & CEO
Rob Hallifax
Builder of both digital and physical products. Previous work has involved Internet of Things systems, scientific instrumentation, and design platforms. Rob has founded two companies to commercialise consumer products after multiple crowdfunding campaigns and ten thousand happy Kickstarter backers. He’s also a double world record holder.
Co-founder & CPOWe’re supported by a small team working on design, and operations.
Ben King and Victor Gil combine homeware fluency with serious technical delivery, helping turn the Windfall battery into a product that feels right at home and works brilliantly. Their experience spans IKEA, Lakeland, Joseph Joseph, Kingfisher, JCB and Kohler Mira, plus 175 plus launches, 11 patents and more than 25 awards.
Ben King & Victor Gil
Operations specialist and community builder with experience in a Big Four consultancy and climate tech start-ups. Leading Windfall Energy’s B-Corp certification.
Isabel Spigarolo
And a board of advisors adding depth in product, marketing, manufacturing, energy industry, and finance.
Renowned marketer, revolutionary product designer and entrepreneur. Co-founder of Plumen, digital agency Poke, and the Lovie awards.
Nicolas Roope
Entrepreneur and technology visionary. Co-founder of Bboxx - providing a distributed network of a million batteries across East Africa. Advisor to Ionetic
Chris Baker-Brian
Investors
We’re proud to be backed by Bethnal Green Ventures, Europe’s leading early stage tech-for-good VC, and some angel investors.
If you’re interested in investment opportunities with Windfall Energy, please get in touch.
