Fort Stockton, Pecos County, TX
Project Horizon
Also known as Poolside Project Horizon
- Rumored
- Proposed
- Approved
- Under construction
- Operating
A planned 2 GW, natural gas-powered AI campus on 568 acres at Longfellow Ranch in Pecos County, West Texas, announced by AI company Poolside in October 2025 with CoreWeave as anchor tenant for a first 250 MW phase. In April 2026 DCD, citing the Financial Times, reported the CoreWeave deal had fallen apart and Poolside was seeking new partners. Pecos County considered a tax abatement for Poolside in November 2025.
Key facts
Size & schedule
| Planned capacity | 2 GW [1] eight 250 MW phases, per Poolside |
|---|---|
| Phase 1 capacity | 250 MW [1] originally leased to CoreWeave; lease ended 2026 |
| Site size | 568 acres [1] |
| Site size | 559 acres [5] conflicts with the 568 acres stated in Poolside's 2025 announcement Source excerpt“Located more than 25 miles outside Fort Stockton on a 559-acre footprint adjacent to the sprawling Longfellow Ranch.” |
Power
| Power supply | On-site aero-derivative natural gas turbines with battery storage and grid interconnect, per Poolside [1] |
|---|---|
| On-site generation | up to 1.2 GW initial [5] stated as initial capacity of up to 1.2 gigawatts, with another seven gigawatts of power potential identified; Poolside's 2025 announcement described a 2 GW campus Source excerpt“This self-sufficiency shields Pecos County homes, schools, and businesses from load spikes while positioning Project Horizon to scale modularly across eight phases, with an initial capacity of up to 1.2 gigawatts and another seven gigawatts of power potential identified.” |
Water
| Water source | Non-potable groundwater within existing permitted allocations [5]Source excerpt“All campus water draws from non-potable groundwater within existing permitted allocations, thus avoiding putting any strain on the city's municipal supply.” |
|---|---|
| Cooling | Poolside's 2025 announcement described air cooling; its CEO later described closed-loop liquid cooling using non-potable groundwater [5] |
Money & incentives
| Tax incentives | Tax abatement agreement with Poolside Inc. within the Longfellow Renewable Energy Reinvestment Zone (on Nov. 10, 2025 county agenda) [4] |
|---|
Figures are as stated by the cited source. Where sources disagree, each figure is shown.
Timeline
Pecos County establishes the Longfellow Renewable Energy Reinvestment Zone [4]
Poolside announces Project Horizon with CoreWeave as anchor tenant under a 15-year, 250 MW lease [1]
Pecos County Commissioners Court agenda includes a tax abatement agreement with Poolside Inc. [4]
Pecos County Commissioners Court agenda includes a tax abatement agreement with CoreWeave, LLC within the Longfellow Renewable Energy Reinvestment Zone [6]
DCD reports, citing the Financial Times, that the CoreWeave deal collapsed and Poolside is seeking new partners [3]
Issues raised
- Activists have raised concerns about grid strain, water use and construction disruption; the developer says cooling water use will be minimal [5]
Sources
- Announcing Project Horizon: Why we're building a 2 gigawatt AI campus in TexasPoolside · Oct 15, 2025 · company
- AI startup Poolside teams up with CoreWeave on 2GW data center in TexasDatacenterDynamics · Oct 16, 2025 · news
- Poolside seeks partners for data center in Texas after CoreWeave deal falls apartDatacenterDynamics · Apr 2, 2026 · news
- Commissioner's Court Regular Session Agenda 11/10/2025Pecos County, Texas · Nov 10, 2025 · government
- West Texas Data Center Project Addresses Activist Concerns Head-OnForbes (contributor) · Jun 2, 2026 · news
- Commissioner's Court Regular Session Agenda 1/12/2026Pecos County, Texas · Jan 12, 2026 · government