If you’re a Rate M, G9 or LG customer who’s able to curtail your consumption at Hydro‑Québec’s request, you can save on your winter electricity bill.

With the Interruptible Electricity Options, you get credits in exchange for lowering your electricity consumption at Hydro‑Québec’s request.

These options were developed to help balance electricity supply and demand in Québec. By limiting your power consumption during the periods requested by Hydro‑Québec, you help ensure a wiser use of our collective resources. In return, Hydro‑Québec pays you the equivalent of what it spends when it buys power on open markets.

Sign-up procedure

You must submit your request to Hydro‑Québec, indicating your proposed interruptible power, before October 1.

You must commit to a base power not exceeding 80% of your average billing demand for the preceding winter period.

Conditions of application

Conditions Option I Option II
Advance notice – Weekdays 2 hours 2 hours
Advance notice – Weekends 3:30 p.m. the preceding day N/A
Maximum number of interruptions per day 2 2
Minimum interval between 2 interruptions in the same day 4 hours 6 hours
Maximum number of interruptions per winter period 20 25
Duration of an interruption 4–5 hours 4 hours
Maximum duration of interruptions per winter period 100 hours 100 hours

Interruptions can occur:

  • Option I: at any time in the winter period;
  • Option II: Between 6 and 10 a.m. or between 4 and 8 p.m. weekdays during the winter period, excluding statutory holidays.

More information

For any questions about these rate options, contact our Business customer services by phone at 1 800 463‑9900 or by email at

This information has been simplified. For more details about the Interruptible Electricity Options for medium-power and Rate LG customers: