Rate Flex D is for Rate D (base rate) customers who are able to use less electricity during peak demand events or shift their nonessential electricity consumption to outside of those periods. To be eligible for this rate, you must have the following:

In addition, you must not:

Cases in which Rate Flex D applies

  • Dwellings for which the electricity is metered separately in most cases
  • Farms: Land, buildings and equipment used to raise crops or livestock, excluding any commercial activity or industrial activity

    See our eligibility criteria regarding domestic rates for farms [PDF 583 kB]

  • Apartment buildings for which the electricity is metered separately or in bulk if the apartment building was built after April 1, 2008
  • Community residences consisting of individual units (separate metering)
  • Community residences (9 rooms or less)
  • Rooming houses (9 rooms or less)
  • Bed and breakfasts (9 rooms or less)
  • Foster families or foster homes (9 people or less)
  • Tourist homes (separate metering)
  • Residential outbuildings, that is, any buildings or installations belonging to premises used for habitation purposes
    • used exclusively by the persons occupying the dwelling or apartment building
    • used exclusively for purposes related to those of the dwelling or apartment building
  • Portion of electricity used for purposes other than habitation (installed capacity 10 kilowatts (kW) or less)

See how much you could save and sign up!

In your Customer Space, see how much you could save with the Winter Credit Option or Rate Flex D and sign up.

Rate Flex D conditions

To sign up for Rate Flex D, you must submit a request through your Customer Space or contact Hydro‑Québec’s customer services by November 20 of the current year.


To be eligible for Rate Flex D, you need to meet the following conditions:

  • You must have a Rate D service contract.
  • Your electrical installation must be supplied by the main grid rather than by an off-grid system.
  • Metering must be done by a single communicating meter installed by Hydro‑Québec.
  • You must have created a Customer Space. For as long as you are signed up for this rate, you must provide a valid email address to which peak demand event notifications will be sent.
  • You must not have canceled a Rate Flex D contract during the previous winter period.
  • You must not be signed up for any other rate options.

Peak demand events

Peak demand events can take place weekdays from December 1 to March 31, from 6 to 9 a.m. and from 4 to 8 p.m., excluding December 24, 25, 26 and 31, and January 1 and 2, as well as Good Friday and Easter Monday when they fall within the winter period.

  • Maximum number of events per day: 2 events
  • Minimum interval between 2 events: 7 hours
  • Duration of an event: 3 or 4 hours
  • Maximum total duration of events in the winter period: 100 hours

Peak demand event notifications

Hydro‑Québec will notify you by email, at the address provided in your Customer Space, no later than 5 p.m. the day before a peak demand event, indicating the event start and end times. It will also post all peak demand event notifications on its website, www.hydroquebec.com. Hydro‑Québec cannot be held responsible for nonreceipt of a notification due to the failure of systems or equipment belonging to you or your telecommunications provider.


Hydro‑Québec reserves the right to terminate your service contract at this rate if there are recurring problems in gathering hourly metering data.


You can sign up for Rate Flex D for next season once the billing period covering April 1 is over and up to November 20.


You can cancel a Rate Flex D service contract at any time by calling Hydro‑Québec’s customer services. Your contract will then become subject to Rate D (base rate), if it is still eligible, or to any other rate for which it is eligible.

Under no circumstances shall the information provided here replace the Electricity Rates.

More information

To find out more about Rate Flex D, see Section 9 of Chapter 2 of the Electricity Rates [PDF 1.44 MB].