IREN Horizon 1 (Microsoft) is a data center operated by IREN in Sweetwater, TX, US. It carries a reported power capacity of 75.0 MW and is currently under construction. It sits in the Abilene data-center market on the ERCOT grid, which DC Hub's Data Center Power Index currently rates CAUTION, with an estimated 34.1-month time-to-power. The market shows mixed signals — validate live grid headroom and queue depth before committing capacity.
Data Center Power Index verdict for Abilene — the market this facility sits in.
Full DCPI breakdown →DC Hub analyst read on Abilene — the market this facility sits in (full deep-dive →).
Abilene's data center market comprises 5,650 MW across 10 tracked facilities, anchored by Oracle/OpenAI's three-site presence and Oracle's additional two facilities. The market's excess-power score of 63/100 indicates moderate surplus generation capacity, while a constraint rating of 51/100 signals meaningful transmission and infrastructure limitations. The operator base is geographically concentrated, with Crusoe Energy, LONGHORN DATA CENTER, and Lancium each maintaining single facilities, suggesting selective rather than competitive site selection. The DCPI verdict of CAUTION reflects genuine operational tensions that should guide acquisition strategy. Excess power availability makes greenfield or expansion projects economically attractive on the generation side, but the constraint score—hovering just above midpoint—reveals that transmission bottlenecks and grid integration challenges…
Published DC Hub data for this location.
DC Hub tracks 36 operating generating units totalling 5,938 MW within about 50 km of Sweetwater, US. Generation mix shapes both carbon profile and interconnection options for a site at this location.
Source: Global Energy Monitor unit inventory, operating units only. Counts are units, not plants.
Comparable facilities in Sweetwater tracked by DC Hub — compare power, operators, and grid context across the market.
get_facility slug="iren-iren-horizon-1-microsoft-a8aa6db3" (endpoint https://dchub.cloud/mcp) for the full cited record. Connect:
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