Profitability remains a rare achievement in climate tech. Fuse Energy has now joined a small group of companies proving growth and profitability can coexist.

The London-based energy company announced that it has reached group-level profitability just three years after its launch. The company says it has been EBITDA-positive every month since December 2025 and has grown its revenue run rate to more than $550 million.

Alongside the milestone, Fuse Energy also secured an additional $30 million extension to its Series B funding round, bringing total funding raised to $250 million.

The company now serves more than 300,000 UK households and is developing a 1 GW pipeline of renewable energy generation projects.

According to the company, Fuse Energy has been EBITDA-positive every month since December 2025.

The achievement comes during a period of rapid growth. Fuse reported a 32% increase in revenue run rate during the first quarter of 2026 alone, pushing the figure above $550 million.

The announcement stands out because profitability remains uncommon among high-growth energy and climate technology startups, many of which continue prioritizing expansion over financial performance.

Fuse also announced a $30 million extension to its Series B funding round.

The investment was led by 20VC and Collaborative Fund, which joined existing investors including Balderton Capital and Lowercarbon Capital.

The latest funding brings the total capital raised by the company to $250 million.

Fuse Energy was founded in 2022 by Alan Chang and Charles Orr, former executives at Revolut.

The company's strategy differs from many traditional energy suppliers. Rather than relying heavily on third-party providers across the value chain, Fuse owns and operates multiple parts of the business itself, including generation assets, trading systems, and customer-facing retail operations.

"We started Fuse Energy with a simple belief: that energy should be low-cost and abundant," said Alan Chang, CEO and co-founder of Fuse Energy.

"Getting there means owning the problem end-to-end: whether that's writing your own trading algorithms, building your own solar farms, or engineering your own products."

Today, the company serves more than 300,000 households across the UK.

Technology sits at the centre of Fuse's business model.

One of the biggest challenges for energy suppliers is forecasting electricity demand accurately when purchasing power on wholesale markets. Forecasting errors can increase costs and reduce efficiency.

Fuse says it uses algorithms built around a digital twin of every customer property. The system incorporates factors such as local weather conditions, building efficiency, and real-time usage patterns to predict household-level demand.

According to the company, this approach delivers approximately 17% efficiency improvements compared with traditional suppliers while helping it offer some of the UK's most affordable fixed tariffs.

Fuse plans to use its latest funding to continue expanding both its operations and product offerings.

The company is developing a plug-in solar product designed to help households generate renewable energy at home and plans to expand into Europe and North America.

To support that growth, Fuse is opening a new 32,000-square-foot headquarters in Canary Wharf and plans to hire more than 380 employees over the next year.

The energy sector is increasingly attracting companies that combine software, infrastructure, and renewable generation into a single business model.

Fuse believes controlling generation, trading, and customer operations within one company creates efficiencies that can lower costs and improve performance.

The company's ability to reach profitability while continuing to invest in infrastructure, product development, and expansion suggests the model may be gaining traction.

The next test will be whether Fuse can replicate its UK success internationally as it expands across Europe and North America.