E.ON Buys OVO in £600M Deal as Stephen Fitzpatrick Eyes £300M Payday

E.ON’s planned takeover of Ovo Energy is more than another utility merger. It is a sign that Britain’s household energy market is moving into a new phase, where financial strength, digital platforms and customer flexibility are becoming just as important as selling gas and electricity.

The German energy group has agreed to buy Ovo’s UK residential supply business in a transaction widely reported to be worth close to £600 million. If the deal receives regulatory clearance, E.ON will add around four million Ovo customers to its UK base, taking the combined business to roughly 9.6 million households. That would put E.ON ahead of Octopus Energy and make it the largest domestic energy supplier in Britain by customer numbers.

The deal also places Ovo founder Stephen Fitzpatrick back in the spotlight. Fitzpatrick, who launched Ovo in 2009 as a challenger to Britain’s established energy giants, owns just under half of the company. Based on the reported valuation, he is expected to receive about £300 million from the sale. He is also said to be owed around £30 million under a licensing arrangement linked to the use of the Ovo brand.

For Ovo, the sale follows a difficult period. The company grew rapidly after buying SSE’s household energy business, a move that turned it into one of the country’s biggest suppliers. But the market changed sharply after the energy crisis. Higher wholesale costs, tougher regulation and stronger financial resilience rules from Ofgem made life harder for suppliers that needed large amounts of capital to operate safely.

Ovo reported a £135 million net loss in 2024 and later warned that there was material uncertainty around its ability to meet regulatory financial resilience requirements. The company had been seeking fresh investment or a buyer, with Rothschild appointed to explore options. EDF and Engie were also reported to have shown interest before E.ON emerged with the agreed deal.

Swikblog previously reported on the pressure around Ovo’s funding position and commercial challenges as the supplier worked to strengthen its balance sheet.

Read more: Ovo Energy Sues TalkTalk After 135000 Customer Deal Fails Amid 300M Funding Push

The takeover also appears to end Fitzpatrick’s attempt to regain greater control of the company he built. Reports suggest he had tried to persuade shareholders to back a £200 million injection into the business, but that plan did not win enough support. The sale now hands control of Ovo’s retail arm to one of Europe’s biggest energy groups.

E.ON is presenting the acquisition as a long-term technology and flexibility play, not simply a customer grab. The company says the next stage of the energy market will depend on helping households use power more intelligently through smart meters, solar panels, home batteries, electric vehicle charging and tariffs that reward customers for using electricity when demand is lower.

That strategy explains why Ovo remains attractive despite its recent financial strain. Ovo was built as a more digital supplier than many older energy companies, and its customer base gives E.ON a larger platform for products linked to smart homes and flexible energy use. Together, E.ON and Ovo have around seven million smart meters installed, with more than 60% of their customers connected digitally.

Chris Norbury, chief executive of E.ON UK, has said the deal is not about scale for its own sake. The company’s argument is that a larger customer base gives it more room to invest in systems that can reduce bills over time and support a grid increasingly powered by renewables.

That point matters because the UK energy system is becoming more complicated. Wind and solar power are cheaper and cleaner, but they do not produce electricity evenly throughout the day. Suppliers that can shift demand through smart tariffs, batteries and EV charging could become central to keeping costs lower and balancing the grid.

For customers, there will be no immediate change while the transaction is reviewed. E.ON and Ovo have said existing tariffs will be honoured and service will continue as normal until the deal is completed. Regulatory approval is expected in the second half of 2026, although the Competition and Markets Authority may examine the impact on competition.

The size of the combined supplier is likely to attract scrutiny. The new group would hold around 28% of the UK domestic electricity market and about 23% of the domestic gas market. While E.ON says the deal will support investment and innovation, regulators will need to consider whether the merger leaves households with enough choice in a market already dominated by a small number of large suppliers.

The transaction does not include Kaluza, Ovo’s energy software business. Kaluza provides technology that supports billing, customer management and smart energy services. E.ON has said it will continue using Kaluza for Ovo’s customers and may consider using the platform more widely outside the UK. That is notable because E.ON currently uses Kraken, the software platform developed by Octopus Energy.

Ovo is also selling its home services division, which includes boiler servicing and insurance, to Hometree. That separate sale suggests Ovo is being broken into a more focused retail supply business before the E.ON takeover is completed.

The deal comes at a sensitive time for UK households. Energy bills remain under pressure, and consumers are watching closely for changes in Ofgem’s price cap. Any promise of lower costs from a bigger supplier will be judged against the reality of monthly bills.

Related coverage: UK Energy Price Cap Set at £1,837 from July – British Gas Customers Face Higher Bills

For Britain’s energy market, the message is clear. The challenger supplier era that helped reshape the industry is giving way to a market where only companies with deep capital, strong technology and large customer bases may be able to compete at scale. Ovo helped disrupt the old order. Now, under E.ON, its next chapter may be about turning that customer base into a platform for a more digital and flexible energy system.

More details are available in E.ON’s official acquisition announcement.

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