Childress Horizon liquid-cooled data centers for Microsoft
Company: IREN - Project: Childress
The claim, verbatim
IREN is accelerating construction of Horizon 1-4 liquid-cooled data centers at Childress with 200MW critical IT load, featuring Tier 3-equivalent concurrent maintainability, 100MW superclusters for high-performance training, and flexible rack densities of 130-200kW.
Source (primary)
iren 8-K exhibit (q1fy26resultspressreleas.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-09-27)Live source ↗
Quote: “Accelerating construction of Horizon 1-4 (200MW critical IT load) liquid-cooled data centers for Microsoft. Significant enhancements to original Horizon design, including Tier 3-equivalent concurrent maintainability, 100MW superclusters for high-performance training, and flexible rack densities (130-200kW).”
How we checked this
Checked on September 29, 2026. The cited source supports every part of this claim.
The Childress project update states each of these points. It also says the Horizon 1-4 data centers are being built for Microsoft.
Confirmed in the source:
- IREN is accelerating construction of Horizon 1-4 liquid-cooled data centers at Childress
- Horizon 1-4 total 200MW of critical IT load
- The Horizon design includes Tier 3-equivalent concurrent maintainability
- The Horizon design includes 100MW superclusters for high-performance training
- The Horizon design includes flexible rack densities of 130-200kW
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1878848/000187884825000079/q1fy26resultspressreleas.htm) in full (25,079 characters, retrieved September 27, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms iren 8-K exhibit (q1fy26resultspressreleas.htm)
Quote: “Accelerating construction of Horizon 1-4 (200MW critical IT load) liquid-cooled data centers for Microsoft. Significant enhancements to original Horizon design, including Tier 3-equivalent concurrent maintainability, 100MW superclusters for high-performance training, and flexible rack densities (130-200kW).”