Center Registry · Texas

Rockdale AI Campus

Riot Platforms · Rockdale, Milam County, Texas

Verified by Center RegistryChecked against 4 sources, including primary filings and releases
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241 MW
Critical IT planned
25 MW
Energized today
2026-01
First power
ERCOT
Grid region · location approximate
In brief

What makes it notable.

  1. Up to 700 MW is approved through the Sandow Switch at the former Alcoa site, delivered by Oncor, alongside a 345 MW fixed-price PPA in three blocks running through 2027 to 2030.
  2. The first phase retrofits existing Building G for high-density critical IT with an in-house team: 5 MW in January 2026, the remainder targeted for May 2026.
  3. Critical capacity is 25 MW today against 241 MW planned, with full buildout targeted for June 2028.
Deal anatomy

Six layers, and who holds each.

Every Registry site is read the same way: a campus is real when each layer has a name. Members see the anchor tenant and the capital.

Power
ERCOT / Oncor, Rockdale PPA (Whinstone US)
Site and build
Riot Platforms (in-house)
Compute
AMD (anchor tenant)
Cloud operator
AMD
Anchor tenant
Members
Capital
Members
Free for professionals in AI infrastructure.
Timeline

From here to full build.

  1. 2026-01First power
  2. Nov 2026Today
  3. 2028-06Full buildoutfull 191 MW frontier-lab lease); AMD's 50 MW completes 2027-05
The detail

Each party's role.

Power

ERCOT / Oncor. 700 MW approved via the Sandow Switch (former Alcoa site); Oncor delivers

Power

Rockdale PPA (Whinstone US). 345 MW fixed-price PPA in three blocks (through 2027-2030)

Site and build

Riot Platforms (in-house). Retrofit of existing Building G for high-density critical IT, delivered in phases (5 MW Jan 2026, remainder targeted May 2026); in-house data center team, Riot Engineering supplies power-distribution equipment

Compute

AMD (anchor tenant). AMD anchor lease; own accelerators (likely Instinct) inferred

Cloud operator

AMD. Tenant operates its own compute workloads; Riot provides facility operations under the lease reported

Related sites

Nearby in the buildout.

All AI data centers in Texas →

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Sources

The record behind this page.

Center Registry

Who keeps this record.

Center Registry tracks the US AI data center buildout site by site. Every record is checked against primary sources: SEC filings, company releases, utility and grid operator records. A record changes when a filing changes it.

The mapEvery verified site, with its stage, capacity and grid region.Open the map → How sites are verifiedWhat gets a site on the Registry, and what each confidence tag means.About the Registry → Free membershipFor professionals in AI infrastructure. Opens the anchor tenant, the capital and the next milestone.Join free →

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