The amount of energy you used during an event is compared against the amount of energy you used on recent, similar, non-event days during the same time period to determine the amount of energy you saved.
To calculate your expected energy usage, we identify the 10 previous weekdays (if the event is on a weekday) or the 5 previous weekend days or holidays (if the event is on a weekend or holiday). Within those days, we choose the 5 days with the highest energy usage for a weekday event or the 3 days with the highest energy usage for a weekend or holiday event. Only the days that did not experience an event or power outage are considered. We calculate your average energy usage for a weekday event or the weighted average for a weekend or holiday event. Lastly, an adjustment is made to allow for weather conditions based on your energy usage during the hours before and after the event compared to the same hours on the selected similar days.
The difference between your expected energy usage and your actual energy usage during the event is what you will be paid for, applied as a yearly credit to your bill.
