Ontario–New York
NYISO ↔ Ontario · AC with phase-angle regulation
The AC ties at Niagara and on the St. Lawrence between Ontario's hydro stations and New York's, scheduled as one interface.
Operator readings
Compare each operator’s reading at its stated time. Scheduled transfers and metered physical flow measure different things.
- As NYISO reports it
- 935 MW · NYISO → Ontario
Current reading · limit this way 1,350 MW · 65 MW left to schedule · as of Nov 10, 6:50 PM EST
- As IESO reports it
- 964 MW · NYISO → Ontario
Current reading · as of Nov 10, 6:00 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 → Ontario. Below: the reverse.
- Usual direction
- Ontario → NYISO in 61% of hours
37% out, 61% in, 2% idle across 721 hours
- Average
- 115 MW · Ontario → NYISO
- When busy
- 882 MW
95th percentile of hourly flow either way
- Peak NYISO → Ontario
- 1,000 MW
- Peak Ontario → NYISO
- 1,242 MW
- Direction changes
- 93
Hardware
Its terminals, placed from named HIFLD substations or other cited geospatial sources where available.
- Substation
- Beck and Saunders, Ontario
In Canada, outside HIFLD's coverage
- Substation
- Niagara, NY
43.1400, -79.0276 · 345 kV
- Substation
- Moses, NY
45.0041, -74.8044 · 230 kV
Sources and method
Readings come from NYISO and IESO 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.