Groves-1 isotope test reactor reaches substantial completion in 229 days
From the Energy digest for Nov 7, 2026
Sources BigGo News Financial News Motley Fool
What happened: Oklo said its Groves-1 isotope test reactor reached substantial construction completion after 229 days, at a build cost of roughly $65 million plus about $10 million for commercially sourced fuel — disclosed alongside the company's third-quarter results.
What's genuinely new: Groves-1's substantial construction completion is now measured, dated detail: a 229-day build duration, a roughly $65 million build cost, and about $10 million for commercially sourced fuel. Oklo also said it is preparing Groves-2, an integrated isotope production and processing facility selected for the Department of Energy's Nuclear Energy Launchpad, and expects its first contracted isotope delivery within 12 months.
Watch: The start of Groves-2 construction, the identity of the first isotope customers, and whether the first contracted delivery lands within the 12-month target.