Establish baseline period
PGE looks at the 10 most recent days that are similar in type (weekday or weekend). Holidays or any previous Peak Time Event days are not considered similar days and are not included in establishing the 10-day baseline period.
Determine typical use
Using the selected 10 days for your baseline period, PGE identifies your home’s average use during the same hours as the Peak Time Event. So, if the upcoming Peak Time Event is from 4:00 – 7:00 p.m., PGE will determine your home’s average use during the hours of 4:00 -7:00 p.m.
Adjust for weather
Because the weather on the Peak Time Event day may not be exactly the same as the 10 days selected for the baseline period, PGE applies an adjustment for the difference in temperature for some customers if your historical usage indicates a significant difference in electrical use when the temperature changes. For example, you may have higher use in summer because of air conditioning or in the winter due to electric heating. This will determine your home’s energy usage baseline or “Typical Use.”
Calculate the difference
We subtract the total kilowatt hours you use during the Peak Time Event or “Actual Event Use” from your “Typical Use,” as shown in the calculation below. If your energy use during the event is less than your Typical Use, you earn a rebate at a rate of $1.00 per kilowatt hour.
(typical use + weather adjustment) – actual event use = kWh savings
kWh savings x $1.00/kWh = Rebate
(3.67 kWh + 1.1 kWh) – 2.21 kWh = 2.56 kWh
2.56 kWh x $1.00 = $2.56
Rebate that would appear on the bill = $2.56