Marion Substation, Guadalupe County, Texas
Marion Substation is a 345 kV station in Guadalupe County, Texas, owned by LCRA with 11 transmission lines connected. It is classed as a transmission station: load service would need a new transformer or a distribution sub fed from it. 2 queued projects name it as their point of interconnection.
Station facts
| Owner | LCRA |
| Voltage | 345 kV |
| Status | In Service |
| Station class | transmission (moderate confidence) |
| Likely serving utility nearby | New Braunfels Utilities |
| Jurisdiction | Inside an estimated city ETJ; nearest city Santa Clara (0.1 mi) |
| Coordinates | 29.6205, -98.1487 |
Interconnection queue at Marion Substation
1 generation project name this station as point of interconnection: 1 gas. 1 battery storage project, 0 with a signed interconnection agreement.
From the ERCOT GIS report. Developers, MW and dates are on Pro.
Nearby substations
| Substation | Voltage | Owner | Distance |
|---|---|---|---|
| Guadalupe Generating | 138 kV | Guadalupe Power Prtnrs Lp | 0.5 mi |
| Sheriffs Posse | 138 kV | New Braunfels Utilities | 3.16 mi |
| Schumansville | 138 kV | Guadalupe Valley Electric Cooperative | 3.87 mi |
| Ec Mornhinweg | 138 kV | New Braunfels Utilities | 4.17 mi |
| Cemex | 138 kV | New Braunfels Utilities | 4.23 mi |
| Gpi | 138 kV | New Braunfels Utilities | 4.28 mi |
| Cibolo | 138 kV | Guadalupe Valley Electric Cooperative | 4.59 mi |
Wholesale prices nearby
The SOUTH load zone averaged $48.57/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: BAFFIN_ALL $44.67, GUADG_CCU1 $44.09 and CACH_ESS_RN $44.29.
See Marion Substation on the map
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Sources: HIFLD and OpenStreetMap substations and lines, ERCOT GIS report (queue, 2026-09), ERCOT day-ahead prices, TxDOT and StratMap boundaries, Barrio Energy research. Updated 2026-11-09. Screening data only; the serving utility confirms capacity.