Energy Usage Indices

The Energy Usage Indices let you modify the pattern of annual energy usage for each energy type. The annual energy usage may change in some predictable manner. For example, an anticipated switch in heating fuels in some future year or the phasing in of energy conservation measures over several years may reduce the use of one type of fuel and perhaps increase the use of another.

Note: The duration periods of the Energy Usage Index begin with the Service Date (since energy consumption calculations begin with the Service Date), while the duration periods for Energy Price Escalation Rates begin with the start of the Study Period (since all prices are entered in base-year dollars).