This Nodal Protocol Revision Request (NPRR) clarifies that the Initial Estimated Liability (IEL) component of the Estimated Aggregate Liability (EAL) calculation is to be used only during the first 40 days of a Counter-Party’s activity in ERCOT markets.
Reason:
As expressed in EAL, IEL may be used to determine collateral over an indefinite time. Since IEL is intended to serve as an estimate of market activity before trading records are available, it should not continue to be used after that time.