MISO–PJM seam
MISO ↔ PJM · Market seam (every AC tie between two markets)
Every AC tie between MISO and PJM, from Wisconsin to Kentucky. The busiest market seam in the East, coordinated under a joint operating agreement.
Operator readings
Compare each operator’s reading at its stated time. Scheduled transfers and metered physical flow measure different things.
- As MISO reports it
- 3,419 MW · PJM → MISO
Update overdue · as of Nov 9, 10:00 PM CST
- As PJM reports it
- 3,399 MW · PJM → MISO
Current reading · as of Nov 10, 5:40 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: MISO → PJM. Below: the reverse.
- Usual direction
- PJM → MISO in 98% of hours
1% out, 98% in, 0% idle across 581 hours
- Average
- 2,425 MW · PJM → MISO
- When busy
- 4,010 MW
95th percentile of hourly flow either way
- Peak MISO → PJM
- 864 MW
- Peak PJM → MISO
- 5,274 MW
- Direction changes
- 10
Sources and method
Readings come from MISO and PJM 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 MISO. 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.