Champlain Hudson Power Express
NYISO ↔ Hydro-Québec · HVDC line (voltage-source)
A buried and submarine HVDC cable from Québec down Lake Champlain and the Hudson River to a converter in Astoria, Queens, delivering Hydro-Québec power directly into New York City.
Operator readings
Compare each operator’s reading at its stated time. Scheduled transfers and metered physical flow measure different things.
- As NYISO reports it
- 1,058 MW · Hydro-Québec → NYISO
Current reading · limit this way 1,250 MW · 192 MW left to schedule · as of Nov 10, 6:45 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 → Hydro-Québec. Below: the reverse.
- Usual direction
- Hydro-Québec → NYISO in 43% of hours
0% out, 43% in, 57% idle across 721 hours
- Average
- 356 MW · Hydro-Québec → NYISO
- When busy
- 1,250 MW
95th percentile of hourly flow either way
- Peak NYISO → Hydro-Québec
- 0 MW
- Peak Hydro-Québec → NYISO
- 1,250 MW
- Direction changes
- 0
- Hours near its rating
- 134 of 721
At 95% or more of 1,250 MW
Hardware
Its terminals, placed from named HIFLD substations or other cited geospatial sources where available.
- Substation
- Hertel, Québec
In Canada, outside HIFLD's coverage
- Converter
- Astoria, NY
40.7838, -73.9034 · 345 kV · representative location
Sources and method
Readings come from NYISO 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.