A time period during which Hydro‑Québec has determined that demand will be very high.
Difference between the kilowatthours (kWh) usually consumed in peak hours (reference energy) and those consumed during a peak demand event (actual consumption). You must curtail at least 2 kWh per event to be eligible for a credit.
Estimate of electricity usually used, determined by adding up the average number of kilowatthours recorded for the same times of day during the reference period and adjusting for the temperature. Averaging excludes minimum and maximum values in each hour.