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 Rates for Business Customers  

Rate M

General rate for medium-power customers

Rate that applies to customers whose maximum power demand has been 50 kilowatts (kW) or more at least once in the last 12 billing periods.

Structure of Rate M

Demand charge: $14.43/kW
Price of
  • First 210,000 kilowatthours (kWh): 4.97¢/kWh
  • Remaining consumption: 3.69¢/kWh

Rates in effect April 1, 2017. Under no circumstances shall this table replace the Electricity Rates.



Understanding rates

Rates have three main components that reflect the actual costs incurred by Hydro-Québec to provide electrical service.

Rate M, like Rates G-9, LG and L, has no fixed charge. However, the bill cannot be less than the applicable monthly minimum.

As the amount of consumed varies, the cost of energy varies as well.

Hydro-Québec must be able to meet its customers’ maximum power demand at all times. Even if is variable and consumption is sometimes minimal, Hydro-Québec’s rates still have to cover the cost of operating and maintaining the power system. For this reason, it’s important that rates for large electricity consumers include billing for maximum power demand. This reflects the costs associated with meeting power demands of varying size and duration.

Your billing demand, for purposes of applying the demand charge, is the greater of these two values:

  • Maximum power demand, which is to the greater of the following two values:


  • or



For rate M, the minimum billing demand is equal to 65% of the during a consumption period that falls wholly within the period included in the 12 consecutive monthly periods ending with the consumption period in question.


Electricity rates also include other components

Hydro-Québec's rates assume that electricity will be supplied at low . If you have equipment to step down the voltage of the electricity delivered to you or if you use electricity at medium or high voltage, that means reduced costs for Hydro-Québec. In return, you receive a monthly credit on your demand charge. The credit is determined according to the supply voltage.

Nominal voltage between phases equal to
or greater than Monthly credit

5 kV, but under 15 kV $0.612/kW
15 kV, but under 50 kV $0.981/kW
50 kV, but under 80 kV $2.190/kW
80 kV, but under 170 kV $2.679/kW
170 kV $3.540/kW

Rates in effect April 1, 2017. Under no circumstances shall this table replace the Electricity Rates.

Hydro-Québec bills you only for the electricity you use, regardless of where it is metered in relation to the transformer substation. If metering occurs before transformation, the electricity billed will include transformation losses. So that you do not pay for losses, Hydro-Québec grants an adjustment of on the billing demand. Conversely, if metering occurs after transformation, the company will absorb the losses.


Rate options applicable to Rate M


See also