Sam Altman-backed Oklo to help advance nuclear fuel ecosystem in US

Oklo, a nuclear technology firm backed by OpenAI CEO Sam Altman, has entered into a significant agreement with Europe-based newcleo to develop advanced nuclear fuel fabrication and manufacturing infrastructure in the United States. Newcleo plans to invest up to $2 billion through an investment vehicle, with Sweden’s Blykalla also considering investment to secure nuclear fuel-related services. This partnership aims to bolster the US nuclear fuel ecosystem by fostering transatlantic cooperation, enhancing energy security, and supporting the domestic fuel supply chain. The collaboration may include co-locating fuel fabrication facilities and repurposing surplus plutonium in line with US safety standards, which Oklo’s CEO Jacob DeWitte highlighted as a way to eliminate legacy liabilities and accelerate advanced reactor deployment. This agreement aligns with recent US federal initiatives to promote nuclear power as a clean energy source. In May 2025, President Donald Trump directed the Department of Energy (DOE) to launch a pilot program accelerating advanced reactor testing, targeting criticality for at least