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Big Oil turns to nuclear fusion as private investment hits $4.48B in 2025
Fusion private investment reached a record $4.48 billion in 2025, up 69% year over year, as firms like Eni plan commercial plants by the early 2040s or sooner.
Nuclear fusion is moving from lab research toward grid-scale planning as private investment accelerates, with Global private fusion funding reaching a record $4.48 billion in 2025, a 69% increase from a year earlier, according to OilPrice.
Oil and energy majors are increasingly backing projects with timelines for deployment. Italian energy giant Eni S.p.A. plans to deploy a commercial fusion power plant in Europe by the early 2040s or sooner, building on its investment in Commonwealth Fusion Systems and a deal worth more than $1 billion to buy electricity from the startup’s first commercial U.S. plant.
Eni also said it is looking beyond power generation, aiming to develop the fuel systems future fusion plants will need by drawing on its experience processing hydrocarbons and hydrogen. Francesca Ferrazza, Eni’s head of magnetic fusion initiatives, told the Financial Times that fusion is now being treated as an industry, after the technology and expectations shifted in the past five to six years.
Commonwealth Fusion Systems raised another $1 billion in July, bringing total funding to $4 billion as it targets the early 2030s for its first commercial power plant, a planned 400-MW ARC facility, OilPrice reported.