Data center campus · about 23 miles north of Pierre, Sully County, South Dakota
Big Watt Digital Sully County facility
Operating
as of Jan. 30, 2026
South Dakota's largest operating data center, a crypto-mining site north of Pierre run by Big Watt Digital, which plans to grow from 30 MW to 300 MW.
Power30MW reported · stated
Who is behind it
ProjectBig Watt Digital Sully County facility
Developer and teamBig Watt Digital
End userNot found in the recordsNot yet named in any record or credited report we have found.
The record, newest first
A Legislative Research Council memo described the Sully County facility as the state's largest data center and said it is expected to grow to hyperscale size. (South Dakota Legislative Research Council, June 2026)
South Dakota Searchlight reported the 30 MW site pays about $850,000 a year in gross receipts taxes to the local school district, per the electric co-op's CEO, and the county zoning board chair estimated 100 full-time jobs from a 300 MW expansion. (South Dakota Searchlight, Jan. 30, 2026)
Conflicts and open questions
- The original 30 MW facility was proposed roughly three years before January 2026 (about 2023), before this tracker's window; it is included because the 300 MW expansion was stated in 2025-2026.
- Location is approximate: reported as about 23 miles north of Pierre; a 30 MW center was proposed near Oahe Dam power about three years before.
The full record
- Status note
- Operating at about 30 MW; county officials and reporting describe a planned expansion to 300 MW in the coming years.
- Power note
- Current load about 30 MW; expansion to 300 MW is planned but no permit or utility filing for it was found.
- Evidence
- News reports; primary records not yet obtained
- Size class
- Under 50 MW (outside main scope; kept for completeness)