Your question relates to Section VI, Subsection B of Paragraph 10 to the Collateral Annex as amended in the Coversheet of the ComEd Energy Master Agreement. Under the referenced section, the bidder may elect to either: (1) not allow ComEd to hold Performance Assurance in the form of cash, in which case ComEd will pay to the Seller the amount of interest, net of all fees, it receives from the Qualified Institution (and Seller will be responsible for payment of all fees assessed by the Qualified Institution), or (2) allow ComEd to hold cash, in which case the interest rate will be zero (0) percent.