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The cooling system recirculates rather than running evaporative towers, so after the initial fill the developer expects ongoing use comparable to an office building of similar headcount: sinks, restrooms, washdown and landscaping. That would be far below what the former gaseous diffusion plant on the site consumed.","servingUtility":null,"acreage":null,"totalBuildingSqft":null,"streetAddress":null,"notes":"Announced 2026-08-17: SB Energy (a SoftBank subsidiary) will build and operate an AI data-center campus on federal DOE land in Piketon, Pike County, Ohio (the former Portsmouth uranium-enrichment site), leased to OpenAI on a 20-year term and hosting Nvidia compute exclusively. Announced capacity is up to 10 GW of energy (about 8 IT-GW). The first 800 MW phase is targeted to begin operating in 2028; nothing is energized today. 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