If you’re a Rate L 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.

Your interruptible power must be at least 3,000 kW, or 20% of the maximum contract power over the last 12 consumption periods ending at the end of the consumption period that precedes October 1.

Conditions of application

Conditions Option I Option II
Advance notice – Weekdays 2 hours 3 p.m. the preceding day
Advance notice – Weekends 3:30 p.m. the preceding day 3:30 p.m. the preceding day
Maximum number of interruptions per day 2 1
Minimum interval between 2 interruptions in the same day 4 hours 16 hours
Maximum number of interruptions per winter period 20 10
Duration of an interruption 4–5 hours 4–5 hours
Maximum duration of interruptions per winter period 100 hours 50 hours

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 Rate L customers: