Outaouais converter
IESO ↔ Hydro-Québec · Back-to-back HVDC converter
Hydro-Québec's back-to-back converter in the Outaouais, joined to Hydro One's Hawthorne station in Ottawa: the path that carries most Ontario–Québec trade. IESO schedules it as the PQ.AT intertie zone.
What it is carrying
Each operator's own reading, turned into a direction. Where both markets publish the tie, the two should agree.
- As IESO reports it
- 1,233 MW · IESO → Hydro-Québec
as of Oct 10, 1:00 PM EDT
Last 30 days
Hourly flow, signed so that up is power leaving the market.
Above zero: IESO → Hydro-Québec. Below: the reverse.
- Usual direction
- IESO → Hydro-Québec in 96% of hours
96% out, 4% in, 0% idle across 719 hours
- Average
- 932 MW · IESO → Hydro-Québec
- When busy
- 1,234 MW
95th percentile of hourly flow either way
- Peak IESO → Hydro-Québec
- 1,236 MW
- Peak Hydro-Québec → IESO
- 675 MW
- Direction changes
- 12
- Hours near its rating
- 362 of 719
At 95% or more of 1,250 MW
Hardware
Its terminals, placed from named HIFLD substations or other cited geospatial sources where available.
- Converter
- Outaouais converter, Québec
In Canada, outside HIFLD's coverage
- Substation
- Hawthorne, Ontario
In Canada, outside HIFLD's coverage
Sources and method
Flow comes from 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 IESO. 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.