TerraWatt Proposes Up to 1GW Data Center at Former Alton Steel Site
October 23, 2026 Illinois
TerraWatt has proposed buying Alton Steel's 381-acre Illinois mill site and building a data center campus of up to 1GW there. The developer announced the plan on Oct. 21 for the Riverbend Technology Center at 5 Cut Street in Alton. Alton Steel would sell the land, TerraWatt would develop and own...
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