IREN Sweetwater Hub (Sweetwater 1 and Sweetwater 2)

under_construction

COUNTY CONFLICT: IREN brands the campus 'Sweetwater' (Sweetwater city is in Nolan County) while DatacenterDynamics reports the sites are in Fisher County outside Sweetwater. Sweetwater 1 = 1,400 MW on 1,700 acres, substation energization 2026; Sweetwater 2 = 600 MW on 500 acres, IREN targets 2027 energization while DCD reports 2028. Microsoft is a major IREN customer but was not confirmed as a Sweetwater tenant in any source fetched.

Key data: Direct ERCOT connection | ERCOT

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Developer: IREN Limited | Owner: IE US DEVELOPMENT HOLDINGS 7 INC. | Property entity: IE US DEVELOPMENT HOLDINGS 7 INC. | County: Nolan (per IREN site naming); Fisher County per DatacenterDynamics reporting | Research region: Abilene-West Central Texas / Midland-Odessa-Permian Basin | Tenants/customers: IE US HARDWARE 1 INC. (registered occupant)

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Key data: Utility: Direct ERCOT connection | Utility region: ERCOT West | Grid area: ERCOT | Gross MW: 2000 | Substations: 1,400 MW bulk substation (Sweetwater 1) | 345 kV / 138 kV and 138 kV / 34.5 kV transformation | Transmission: 345 kV | 138 kV | 34.5 kV

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Key data: Cooling: Air-cooled and liquid-cooled

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Key data: Jurisdictions: Nolan County / Fisher County (conflicting) | ERCOT | Texas Comptroller of Public Accounts | Tax incentives: [object Object] | {"agreement_name":"Texas Comptroller Qualifying Large Data Center Project registration - Sweetwater II","agreement_number":"LD471220","approval_date":"2025-07-15","estimated_value":"State sales-and-use tax exemption","government_entity":"Texas Comptroller of Public Accounts","investment_commitment":"NOT_FOUND","jobs_commitment":"NOT_FOUND","source_url":"https://comptroller.texas.gov/taxes/data-centers/data-center-lists.php","term":"NOT_FOUND"}

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Key data: Surrounding infrastructure: Direct fiber loop between Sweetwater 1 and Sweetwater 2

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Key data: Surrounding infrastructure: Sub-10 ms latency claimed

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Key data: Surrounding infrastructure: Capacity for more than 700,000 liquid-cooled GPUs

Claim classification: Not yet assigned

Status date: 2026-09-05

Open source 1 →

under_construction

Sweetwater II registered as Qualifying Large Data Center Project with the Texas Comptroller

Claim classification: Not yet assigned

Status date: 2025-07-15

Open source 1 →

under_construction

IREN energizes first phase of Sweetwater campus (Sweetwater 1)

Claim classification: Not yet assigned

Status date: 2026-07-14

Open source 1 →