Big Watt Digital Sully County
30 MW AI data center in Onida, SD, United States: operational.
- Capacity: 30 MW
- Location: Onida, SD, United States
- Developer: Big Watt Digital
- Status: operational
Big Watt Digital Sully County is a 30 MW AI data center project located in Onida, SD, United States, currently operational. It is being built by Big Watt Digital. This project is one of thousands of data-center facilities tracked by Data Center Index across SD, United States, covering operational, under-construction, announced, and permitted sites.
Project description
Big Watt Digital's cryptocurrency mining data center about 23 miles north of Pierre in Sully County is South Dakota's largest at 30 MW, and it's expected to expand to 300 MW in the coming years. Oahe Electric serves it with hydro and wind power.
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Frequently asked questions
- What is Big Watt Digital Sully County?
- Big Watt Digital Sully County is an AI data center project in Onida, South Dakota tracked by Data Center Index. Its status is operational.
- Where is Big Watt Digital Sully County?
- Big Watt Digital Sully County is in Onida, South Dakota. Every tracked South Dakota campus, with counts and capacity, is at https://datacenterindex.ai/markets/south-dakota.
- How big is Big Watt Digital Sully County?
- Data Center Index tracks Big Watt Digital Sully County at 30 MW. The developer or the press states that capacity, in a source dated January 30, 2026.
- Who is building Big Watt Digital Sully County?
- Big Watt Digital is developing Big Watt Digital Sully County.
Sources
- Sully County, home to SD's largest data center, would welcome more with 'open arms,' official says (southdakotasearchlight.com · press · 2026-01-30)
- Sioux Falls Live (Forum Communications; syndicated South Dakota Searchlight) (siouxfallslive.com · press · 2026-01-30)
- Onida Watchman (onidawatchman.com · press · 2026-10-07)