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Website · About · Legal · Privacy · Changelog · © 2026 Parisi Labs
  1. Home
  2. /Assets
  3. /Interties
  4. /Champlain Hudson Power Express
NYISO logo

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.

Now
0 MWIdle
NYISO · as of Sep 26, 2:20 PM EDT
Between
NYISO and Hydro-Québec
Technology
HVDC line (voltage-source)
Rating
1,250 MW
Voltage
±400 kV DC
Length
339 miles
In service
2026
Open on the map

What it is carrying

Each operator's own reading, turned into a direction. Where both markets publish the tie, the two should agree.

As NYISO reports it
0 MW · Idle

limit this way 1,250 MW · 1,250 MW left to schedule · as of Sep 26, 2:20 PM EDT

Price across the seamReal-time · EDT
Reading prices…

Last 30 days

Hourly flow, signed so that up is power leaving the market.

As NYISO reports it-0MW
100-625-1,350Aug 27, 2 PMSep 26, 2 PM

Above zero: NYISO → Hydro-Québec. Below: the reverse.

Hardware

Its terminals. US terminals are placed on the substation HIFLD's national dataset names for them.

Substation
Hertel, Québec

In Canada, outside HIFLD's coverage

Converter
Astoria, NY

40.7838, -73.9034 · 345 kV · nearest mapped substation

Related interties

  • Hydro-Québec–New York
    NYISO ↔ Hydro-Québec
  • Cedars Rapids
    NYISO ↔ Hydro-Québec
  • Hydro-Québec Phase II
    ISO-NE ↔ Hydro-Québec
  • Highgate
    ISO-NE ↔ Hydro-Québec
  • New England Clean Energy Connect
    ISO-NE ↔ Hydro-Québec
  • Cross Sound Cable
    NYISO ↔ New England
  • Norwalk–Northport 1385
    NYISO ↔ New England
  • Neptune
    NYISO ↔ PJM
Owners
Transmission Developers
Published by
NYISO
Usual direction
Hydro-Québec → NYISO in 42% of hours

0% out, 42% in, 58% idle across 721 hours

Average
352 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
152 of 721

At 95% or more of 1,250 MW

The average day
0:006:0012:0018:0023:00
Mean flow by the market's local hour. Up: NYISO → Hydro-Québec. Down: Hydro-Québec → NYISO.