Norwalk–Northport 1385
NYISO ↔ New England · AC with phase-angle regulation
A 138 kV submarine AC cable across Long Island Sound, its flow held to schedule by a phase-angle regulator at Northport.
Operator readings
Compare each operator’s reading at its stated time. Scheduled transfers and metered physical flow measure different things.
- As NYISO reports it
- 35 MW · NYISO → New England
Current reading · limit this way 200 MW · 165 MW left to schedule · as of Nov 10, 6:50 PM EST
- As ISO-NE reports it
- 59 MW · NYISO → New England
Current reading · limit this way 200 MW · as of Nov 10, 6:35 PM EST
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: NYISO → New England. Below: the reverse.
- Usual direction
- New England → NYISO in 58% of hours
25% out, 58% in, 17% idle across 721 hours
- Average
- 33 MW · New England → NYISO
- When busy
- 196 MW
95th percentile of hourly flow either way
- Peak NYISO → New England
- 200 MW
- Peak New England → NYISO
- 200 MW
- Direction changes
- 85
Hardware
Its terminals, placed from named HIFLD substations or other cited geospatial sources where available.
- Substation
- Norwalk Harbor, CT
41.0807, -73.4289 · 115 kV
- Substation
- Northport, NY
40.9233, -73.3411 · 115 kV
Sources and method
Readings come from NYISO and ISO-NE 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 NYISO. 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.