Please see Section 5.5 Determining the Energy Rate in the Illinois Solar for All Program Vendor Manual. For residential, Low-Income Community Solar customers that do not use an Alternative Retail Electric Supplier (ARES), and are not enrolled in an hourly pricing program, a statewide, average rate of $.0600 (6 cents) per kWh is used. For customers using an ARES or enrolled in an hourly pricing program, and for Non-Profit/Public Facilities customers, an average rate based on 12 months of customer bills must be used. This method may also be used for any customer to provide a more accurate projection of cost and savings.
When establishing the Net Metering Rate using customer bills, the most recent 12 months of bills should be used. For Low-Income Community Solar residential customers, only the Supply rate is averaged over 12 months.
In general, the intent is that an accurate projection of the customer’s Net Metering Rate should be used in calculating bill credits and savings. If the net metering rate determined using the most recent 12 months of bills is more accurate than using the statewide, average rate of $.0600 then that value should be used whether or not it is higher.
If the subscriber is served by an ARES the bidder may want to confirm with the ARES the rate at which community solar net metering credits are provided. It may not be the same as their Supply rate.