The Federal Funds Effective Rate is not applicable under the ComEd Energy Master Agreement.  This is indicated by the checkbox pre-populated with an interest rate of zero (0) percent if a bidder elects for ComEd to hold cash. The only election that a bidder can make is either to allow ComEd to hold cash or not to allow ComEd to hold cash.  As described in FAQ-32, the bidder cannot elect for the Federal Funds Rate to apply.