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 Rates for Large-Power Business Customers  

Additional Electricity Option for large–power customers

This option for Rate L or LG customers provides an opportunity to consume electricity in excess of your normal consumption in off-peak hours to meet short-term or exceptional needs.

Rate structure

The price applicable to additional electricity, which covers both power and energy, varies month to month and reflects Hydro-Québec Distribution’s marginal supply cost. It cannot be lower than 4.66 ¢ per kilowatthour.

Calculation of billing amount

Energy billed as additional electricity is calculated in 15-minute blocks.

  • Consumption that exceeds the is billed at the applicable price for additional electricity.
  • The and the rest of the energy are billed at Rate L or LG prices and conditions.

Conditions of application

Hydro-Québec will inform you of the price of additional electricity 7 business days prior to the start of each calendar month. The price remains the same for the full month.

To take advantage of this option, you must apply to Hydro-Québec at least 5 business days prior to the start of the consumption period.

The option goes into effect at the beginning of the consumption period, subject to an agreement on reference power and Hydro-Québec's acceptance.

You must agree to adhere to the additional electricity option for a whole consumption period.


For more information

Are you already a Rate L or LG customer? Get in touch with your Commercial Delegate

You can also consult the Electricity Rates  to find out more about Hydro-Québec's rates and rate options.