Royse Substation, Rockwall County, Texas
Royse Substation is a 345 kV station in Rockwall County, Texas, owned by Oncor with 17 transmission lines connected. It is classed as a transmission station: load service would need a new transformer or a distribution sub fed from it. 4 queued projects name it as their point of interconnection.
Station facts
| Owner | Oncor |
| Voltage | 345 kV |
| Status | In Service |
| Station class | transmission (high confidence) |
| Likely serving utility nearby | Oncor |
| Jurisdiction | Inside Royse City city limits |
| Coordinates | 32.9693, -96.3508 |
Interconnection queue at Royse Substation
1 generation project name this station as point of interconnection: 1 solar. 3 battery storage projects, 0 with a signed interconnection agreement.
From the ERCOT GIS report. Developers, MW and dates are on Pro.
Nearby substations
| Substation | Voltage | Owner | Distance |
|---|---|---|---|
| Unnamed station | 138 kV | Farmers Electric Cooperative | 3.71 mi |
| Unnamed station | 138 kV | Garland City Of | 4.16 mi |
| Rockwall East | 138 kV | Oncor | 5.06 mi |
| Wylie Switchyard | 138 kV | Garland Power & Light | 5.19 mi |
| Tap302565 | 138 kV | Oncor | 5.24 mi |
| Rockwall | 138 kV | Oncor | 6.76 mi |
| Unnamed station | 345 kV | Oncor | 8.93 mi |
Wholesale prices nearby
The NORTH load zone averaged $39.98/MWh day-ahead over the last 7 days. Nearest generator pricing nodes: WIG_BESS_RN $40.34, DRAK_ESS_RN $40.34 and OLIN_OLING_1 $40.33.
See Royse 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.