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Seven Angels Energy Storage II

Sam Switch
It connects to the grid at Sam Switch (marked). The project's own site is not public; Hill County is outlined.
County
Hill
Technology
Battery storage
Capacity
514 MW
Interconnecting entity
Seven Angels Infrastructure LLC
Developer
Polaris Infrastructure Development LLC, originated by Macro Grid Solutions LLC (both Denver)
Point of interconnection
68090 Sam Switch Bus 345kV
Status
SS Completed, FIS Started, No IA
Projected completion
31 December 2028
Queue number
28INR0473
  • Public recordGIS Report for August 2026, posted 1 September 2026, sheet “Project Details – Large Gen” ERCOT GIS Report (checked 14 September 2026)
  • Public recordPolaris Infrastructure Development LLC, originated by Macro Grid Solutions LLC, both of Denver, from officer records Corporate record (checked 14 September 2026)

ERCOT's abbreviations: SS, the security screening study; FIS, the full interconnection study; IA, the interconnection agreement. How this page is sourced →

Queue data: ERCOT GIS Report, August 2026 (posted 1 September 2026, read 30 September 2026). ERCOT publishes it for planning only; its data comes from the project companies and may contain errors. Compiled by Blackland TX. Corrections: [email protected].