Prometheus and Istmo plan a 1.5 GW behind-the-meter Pecos campus in Reeves County

Prometheus Hyperscale and Istmo Energy said on Aug. 20, 2026 that they will jointly develop a behind-the-meter hyperscale campus in Reeves County, Texas. They call it the Pecos campus. It is designed for 1.5 GW of compute in Phase 1, with a path to 2.5 GW, and targets first power in 2027. The announcement carries the configuration; the day’s other established filings sit alongside other West Texas entities.

• Prometheus and Istmo announce a 1.5 GW Reeves County campus – The behind-the-meter Pecos campus would run on pipeline gas and ethane from a co-located fractionation facility, with closed-loop cooling and first power in 2027.
• Prometheus projects page gives a 1.25 GW figure – The company’s own projects page describes the West Texas build as 1.25 GW of IT-ready capacity over multiple phases, alongside the release’s 1.5 GW Phase 1 / 2.5 GW total.
• Andhra Pradesh assembles a multi-GW Vizag data-centre pipeline – APIIC’s policy page lists AP Data Center Policy (4.0) and its allotment report shows Vizag Mega Data Center Park Limited with ~1.08 million sq m allotted in Visakhapatnam in March 2026.
• Sunrun agrees to supply Voltus BYOC programs for AI hyperscalers – Sunrun said on Aug. 17, 2026 it will provide capacity from residential storage-plus-solar systems in PJM and MISO; the release does not name Google.
• Voltus and Google struck a separate three-year PJM deal – Google is a direct counterparty only in the June 2, 2026 Voltus agreement, which aggregates up to 100 MW of DERs each year into a Google-funded virtual power plant.
• Reeves County incentive activity names other West Texas entities – County commissioners weighed a tax-abatement agreement with Pecos Power Plant LLC, and a JETI application covers Energy Forge One LLC’s 2 GW gas plant in the same county.