IREN’s $14 Billion AI Buildout Now Faces Its Delivery Test

Microsoft has accepted the first 50-megawatt tranche of IREN’s Childress, Texas, data-center project. The handover in August gives the former bitcoin miner a concrete milestone in its shift toward AI cloud services. The next three tranches still have to arrive on schedule.

IREN’s headline $14 billion in funding capacity is not a single pot of unrestricted cash. At June 30, the company reported $7.6 billion in cash and restricted cash, including $1.7 billion held as restricted cash. Its funding figure also includes committed GPU financing and customer prepayments, which are tied to specific projects and conditions.

The Microsoft contract helps support that buildout. Signed in 2025, the five-year agreement is worth about $9.7 billion through 2031, according to IREN’s annual filing. The company says a $3.6 billion GPU financing package, combined with customer prepayments, covers 96% of the GPU capital expenditure associated with the Microsoft deal. That helps match equipment costs to a contracted customer, but it does not remove the work of building, powering and operating the facilities.

That distinction matters as IREN scales. Horizon 1 is delivered; the company targets delivery of Horizon 2 through 4 in phases during the fourth quarter of 2026, with contractual grace periods extending into 2027. IREN is targeting cumulative data-center delivery of about 300 megawatts of IT capacity this year and 800 megawatts in 2027.

Its financials show how early the AI business remains. AI cloud-services revenue reached $128.8 million in fiscal 2026, up from $16.4 million a year earlier, while total revenue was $707 million. IREN recorded a $702.6 million net loss, including substantial non-cash impairment charges tied mainly to retiring bitcoin-mining equipment during the conversion.

Management says $4 billion of annualized revenue is contracted for 2026 capacity, but only $1 billion was operating as of August 26. Those figures are annualized run rates, not booked revenue, and the company says service revenue ramps after commissioning, testing and customer acceptance.

Microsoft validates demand for a large slice of the plan. The test now is whether IREN can bring the hardware and buildings online fast enough, and convert promised capacity into operating revenue before the next investment cycle arrives.