The Block Energy and Capacity RFP is for the purchase of wholesale power by the utilities.

For the solicitation of energy blocks, all on-peak hours in a given month constitute the “On-Peak Segment” for that month and all off-peak hours of that month constitute the “Off-Peak Segment” for that month. A “Product” is a constant quantity of energy to be supplied to a Company (Ameren Illinois, ComEd, or MEC) at the delivery point specified by that Company in either the On-Peak Segment or the Off-Peak Segment of a specific month.

A successful Bidder that becomes a Seller to a Company provides a constant amount of energy to that Company corresponding to the sum of the number of blocks won of the Product for that Segment of that month, and the number of blocks won of any Combination that includes that Segment of that month, times 25 MW. For each Segment of each month, the price paid to the Seller is the average of the Seller’s own approved Bids for all blocks of that Product and for all blocks of a Combination that includes that Segment of that month.

For the solicitation of capacity for Ameren Illinois, the “Product” consists of annual Zonal Resource Credits (“ZRCs”), as such term is defined in MISO’s Business Practice Manuals and MISO’s Open Access Transmission, Energy and Operating Reserve Market Tariff for the 2019-2020 Planning Year. A successful Bidder that becomes a Seller delivers the contracted quantity of ZRCs by submitting the appropriate transactions in the Module E Capacity Tracking Tool. The amount paid to the Seller is the average of the Seller’s own approved Bids for all ZRCs in the Planning Year, in $/MW-Day, multiplied the number of ZRCs delivered, multiplied by the number of calendar days in the Planning Year. If any of the ZRCs that are delivered are not located in Local Resource Zone 4, which is the zone in which AIC capacity obligations reside, the payment to the Seller is adjusted as specified in the applicable supplier contract.

Please review the details of the applicable supplier contracts and the RFP Rules on the “Spring Block Energy and Capacity” tab of the procurement website.