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SoftBank’s energy arm SB Energy is developing a massive 10-gigawatt data center campus in Ohio, repurposing federal land at the former Portsmouth Gaseous Diffusion Plant in Piketon as part of a broader push to expand AI infrastructure in the United States.
The project will combine large-scale computing capacity with new power generation, including 10GW of additional energy infrastructure—at least 9.2GW of which will be gas-fired—to support both the data center and the regional electricity grid. SB Energy is also partnering with American Electric Power (AEP) Ohio on a $4.2 billion transmission upgrade initiative aimed at expanding grid capacity across southern Ohio. Power delivery to the site is expected to begin by 2029.
The development aligns with the US government’s strategy to accelerate AI infrastructure while managing energy costs. Officials said the initiative supports broader efforts to boost domestic power generation, create jobs, and maintain competitiveness in the global AI race.
As part of the agreement, SB Energy has also committed to funding accelerated environmental cleanup of the Portsmouth site, which was previously used for uranium enrichment tied to both civilian nuclear energy and defense programs.
SoftBank has assembled a consortium of global industrial and financial partners for the project, including Japanese companies Hitachi, Mitsubishi Electric, Toshiba, TDK and Sumitomo Mitsui Banking, alongside US firms such as Bechtel, Morgan Stanley, Goldman Sachs and JPMorgan.
The Ohio site is emerging as a major energy and technology hub, with separate projects underway from nuclear developer Oklo, in partnership with Centrus Energy, as well as a planned nuclear-powered campus by Meta targeting up to 1.2GW of baseload capacity.
SoftBank Group CEO Masayoshi Son said the initiative reflects the growing importance of infrastructure in enabling next-generation AI technologies, adding that large-scale investments in power and computing will be critical to unlocking future innovation.
The project will combine large-scale computing capacity with new power generation, including 10GW of additional energy infrastructure—at least 9.2GW of which will be gas-fired—to support both the data center and the regional electricity grid. SB Energy is also partnering with American Electric Power (AEP) Ohio on a $4.2 billion transmission upgrade initiative aimed at expanding grid capacity across southern Ohio. Power delivery to the site is expected to begin by 2029.
The development aligns with the US government’s strategy to accelerate AI infrastructure while managing energy costs. Officials said the initiative supports broader efforts to boost domestic power generation, create jobs, and maintain competitiveness in the global AI race.
As part of the agreement, SB Energy has also committed to funding accelerated environmental cleanup of the Portsmouth site, which was previously used for uranium enrichment tied to both civilian nuclear energy and defense programs.
SoftBank has assembled a consortium of global industrial and financial partners for the project, including Japanese companies Hitachi, Mitsubishi Electric, Toshiba, TDK and Sumitomo Mitsui Banking, alongside US firms such as Bechtel, Morgan Stanley, Goldman Sachs and JPMorgan.
The Ohio site is emerging as a major energy and technology hub, with separate projects underway from nuclear developer Oklo, in partnership with Centrus Energy, as well as a planned nuclear-powered campus by Meta targeting up to 1.2GW of baseload capacity.
SoftBank Group CEO Masayoshi Son said the initiative reflects the growing importance of infrastructure in enabling next-generation AI technologies, adding that large-scale investments in power and computing will be critical to unlocking future innovation.
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