Additional Electricity Option
for large‑power customers

Back to rate options
and conditions

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

Rate option structure

The price applicable to additional electricity, which covers both power and energy, varies month to month and reflects Hydro‑Québecʼs marginal supply cost. It cannot be lower than * per kilowatthour.

On the basis of load management requirements and system availability, Hydro‑Québec reserves the right to prohibit, on two hours’ notice, consumption of additional electricity.

* Rate in effect as of April 1, . This information does not replace the Electricity Rates document in any way whatsoever.

Calculation of billing amount

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

• Consumption that exceeds the reference power is billed at the applicable price for additional electricity.
• The reference power 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 seven 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 five 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‑Québecʼs acceptance.

You must agree to adhere to the Additional Electricity Option for a whole consumption period.