MARA Holdings runs a grid-connected bitcoin mining data center in Hannibal, Ohio, on the site of the former Ormet aluminum smelter. The building sits on land leased from the Long Ridge Energy Terminal, beside the 505 MW Long Ridge combined-cycle gas plant. Arkon Energy bought the operating facility in June 2023. MARA acquired it from Arkon in November 2024.
In April 2026 MARA agreed to buy Long Ridge Energy & Power, including the gas plant and more than 1,600 acres, for about $1.5 billion. FERC approved the deal in November 2026. MARA plans to convert the mine to AI and high-performance computing. Construction is set to start in the first half of 2027, with initial capacity in mid-2028. Later phases would add on-site generation behind the meter and a larger grid connection.
Site History
- November 2026: FERC approves the acquisition.
- April 2026: MARA agrees to acquire Long Ridge Energy & Power for about $1.5 billion.
- July 2025: AEP Ohio expands the site's grid delivery point.
- November 2024: MARA Holdings acquires the site from Arkon Energy.
- June 2023: Arkon Energy acquires the operating facility.