Horizon 1 50MW liquid-cooled AI data center delivery in Q4 2025
Company: IREN - Project: Horizon
What the later record shows
Delivered late · happened August 13, 2026
The FY26 10-K states Horizon 1 was delivered to and accepted by Microsoft in August 2026, and a news headline dates the delivery to August 13, 2026. That is after the Q4 2025 target.
“Aug 13, 2026 IREN Delivers Horizon 1 to Microsoft and Achieves NVIDIA Exemplar Cloud Status on GB300 NVL72”
2026-08-18 · IREN (NASDAQ: IREN) pays for Mirantis with new shares - Stock Titan View cached copy (2026-08-31)Live source ↗
“Horizon 1 was delivered to, and accepted by, Microsoft in August 2026.”
2026-08-26 · IREN 10-K filed 2026-08-27 View cached copy (2026-08-30)Live source ↗
Checked October 15, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
IREN targets delivery of Horizon 1 at Childress, with up to 50MW (IT load) of liquid-cooled AI data center capacity, in Q4 2025.
Source (primary)
iren 8-K exhibit (q3fy25presentationvf.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-10-15)Live source ↗
Quote: “Horizon 1 - Up to 50MW (IT load) liquid-cooled capacity targeting Q4 2025 delivery”
How we checked this
Checked on October 17, 2026. The cited source supports every part of this claim.
The highlights slide gives the up-to-50MW liquid-cooled capacity and the Q4 2025 delivery target. The Horizon 1 slide identifies the project as being at Childress and shows Q4 2025 as the 'Data Center Delivered' milestone.
Confirmed in the source:
- Horizon 1 is located at Childress
- Horizon 1 offers up to 50MW (IT load) of liquid-cooled AI data center capacity
- IREN targets delivery of Horizon 1 in Q4 2025
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1878848/000187884825000043/q3fy25presentationvf.htm) in full (46,276 characters, retrieved October 15, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms iren 8-K exhibit (q3fy25presentationvf.htm)
Quote: “Horizon 1 - Up to 50MW (IT load) liquid-cooled capacity targeting Q4 2025 delivery”
confirms iren 8-K exhibit (q3fy25resultspressreleas.htm)
Quote: “Up to 50MW (IT Load) ... Targeting Q4 2025 delivery”
confirms IREN 10-K filed 2026-08-27
Quote: “Horizon 1 was delivered to, and accepted by, Microsoft in August 2026.”
confirms IREN (NASDAQ: IREN) pays for Mirantis with new shares - Stock Titan
Quote: “Aug 13, 2026 IREN Delivers Horizon 1 to Microsoft and Achieves NVIDIA Exemplar Cloud Status on GB300 NVL72”