ExRevolut execs turn Fuse into Europes fastestgrowing energy startup

Europe’s energy system has long been plagued by escalating bills, ageing infrastructure, and a lack of consumer-focused innovation. For millions of households, that has meant paying more for unreliable service. In London, however, a young startup is taking a different path at a speed rarely seen in the sector.
Fuse Energy, founded in 2022 byAlan ChangandCharles Orr, both former Revolut executives, entered the UK market as the first new residential supplier to launch after the energy crisis.
Their goal was ambitious: rebuild the energy system from the ground up. Three years in, Fuse has signed up more than 150,000 households, passed $300 million in annual recurring revenue, and is helping families cut bills by as much as £200 a year.
It took close to two years to secure its first 50,000 customers, but this summer Fuse doubled that tally in less than a month, jumping from 50,000 to 100,000 households in August, and surging past 150,000 shortly after. That growth in scale has not only pushed revenues up 7x year-on-year in Q3 2025 but also positioned Fuse among Europe’s fastest-growing startups of any kind.
With $100 million in funding from investors includingLowercarbon CapitalandBalderton, Fuse is expanding at a pace that feels more like fintech than utilities.
For the founders, this reinvention of energy has personal roots in their Revolut experience. At the fintech, they saw how established industries could be completely reshaped when technology and customer focus were applied with urgency. They found the same structural weaknesses in energy: outdated infrastructure, poor user experience, and an industry that lacked momentum.
“We discovered an industry that had lost its urgency. Grid infrastructure is failing, bills are rising, and the customer experience is terrible. We decided to build everything from scratch: power generation, trading, home hardware installations, and retail energy. We’re creating a new kind of energy company,” says Chang.
That “source-to-socket” model is central to Fuse’s edge. Unlike incumbents tied to wholesale purchases and fragmented operations, Fuse owns and operates renewable assets like wind and solar farms, runs its own trading desk, and supplies electricity and gas directly through its app and web platform. The result is greater control, cost savings, and resilience against the volatility that has rattled traditional suppliers in recent years.
With $300 million in recurring revenue already secured, Fuse is now preparing for its next chapter: European expansion, more renewable generation projects, and connected home hardware that will give households greater control over their consumption.