Eni has also become a member of the nuclear fusion club. The group, which is led by Claudio Descalzi, has signed a Power Purchase Agreement with the US startup Commonwealth Fusion Systems (CFS), of which it has been a strategic shareholder since 2018, to purchase decarbonized energy from the first industrial-scale fusion power plant in the United States. The ARC facility, which will be constructed in Chesterfield County, Virginia, near Richmond, Virginia, will have a nominal power of 400 megawatts. Based on magnetic confinement, Arc represents the new frontier of clean nuclear energy and is expected to be connected to the grid in the early 2030s. This is an optimistic prediction, as neither CFS nor other fusion companies have yet attained a positive energy balance or stabilized the reaction for extended periods. Nonetheless, the prospect of clean, abundant, and dependable energy is generating a lot of excitement among investors and industrial operators. Google executed an agreement to acquire a portion of ARC's electricity in June 2025, and CFS secured an additional $863 million in a new financing round at the conclusion of August 2025. Eni was one of CFS's initial investors in 2018, becoming a strategic shareholder and, beginning in 2023, a technology and engineering partner. With this new arrangement, Claudio Descalzi's group takes the next step toward cementing commercial partnership and strengthening its footprint in the nuclear fusion sector.