Stegall DC tie
SPP ↔ Western Interconnection · Back-to-back HVDC converter
A back-to-back converter in the Nebraska panhandle joining SPP to the Western Interconnection.
Operator readings
Compare each operator’s reading at its stated time. Scheduled transfers and metered physical flow measure different things.
- As SPP reports it
- 0 MW · Idle
Delayed publication · as of Nov 9, 11:55 PM CST
Last 30 days
Hourly readings, signed so that up is power leaving the market. Each series identifies whether it measures flow or a transfer schedule.
Above zero: SPP → Western Interconnection. Below: the reverse.
- Usual direction
- SPP → Western Interconnection in 53% of hours
53% out, 12% in, 35% idle across 703 hours
- Average
- 34 MW · SPP → Western Interconnection
- When busy
- 107 MW
95th percentile of hourly flow either way
- Peak SPP → Western Interconnection
- 107 MW
- Peak Western Interconnection → SPP
- 107 MW
- Direction changes
- 21
Hardware
Its terminals, placed from named HIFLD substations or other cited geospatial sources where available.
- Converter
- Stegall, NE
41.8195, -103.9425 · 345 kV
Sources and method
Readings come from SPP interface readings. Each value is shown with its operator and source time; direction is normalized from that operator’s sign convention toward or away from SPP. A rating describes the equipment; an operator’s posted directional limit, when available, is a separate operating value. The map point identifies a sourced terminal or crossing where available, or a representative connection point; it does not trace the full route.