Riot says commissioning under way on AMD's 25 MW expansion in Rockdale, Texas

Riot Platforms said in its third-quarter 2026 investor presentation, filed with the SEC on 4 November 2026, that commissioning began in October 2026 on the 25 MW expansion AMD exercised at Riot's Rockdale site in Texas.

The AMD timeline in the presentation starts in January 2026, when Riot announced the purchase of land at Rockdale and its first data center lease signed with AMD. Riot says the first 25 MW was delivered in May 2026, by which time it had completed commissioning and reached full stabilization, and that the same month its general contractor was lined up for the second 25 MW buildout.

On that timeline, Riot marks energization complete in September 2026 and the start of commissioning in October 2026. It targets 35 MW in service in November 2026 and the full 50 MW in May 2027, the target delivery dates under the lease for the two later phases, and says the 50 MW is still on schedule to be ready for service in May 2027.

Riot describes the second 25 MW in two parts. A 10 MW phase has been energized and is ready for commissioning, and all of its major cooling equipment is on site. In the remaining 15 MW phase, cooling distribution is being installed and electrical testing is under way; Riot says this takes the building to about 50 MW. Riot says commissioning of further AMD phases is advancing within schedule and budget.

Riot's Rockdale update also covers a separate 191 MW deployment at the site for a customer Riot calls a leading Frontier AI Lab, which it says is developing on schedule and within budget for the ready-for-service dates it expects. Riot targets 96 MW ready for service in December 2027 and 95 MW in June 2028. It says its general contractor mobilized in August 2026, demolition was finished and sitework started in September 2026, and by November 2026 excavation and site development were under way and equipment was being ordered. Its timeline schedules vertical construction and delivery of the building for February 2027 and the start of fit-out for April 2027.