Southwest Power Pool Seasonal Overrides API
A Seasonal Override instructs the system to use a temporary static rating instead of any concurrent Seasonal Rating for a resource. A typical use case is a so-called 'de-rate' due to a temporary clearance issue for a transmission facility that is exempt from providing AARs. Exempt facilities typically operate at a seasonal rating. However, instead of updating the seasonal rating schedule, a Ratings Provider can send a Seasonal Override. During the override period, the Clearinghouse uses the Seasonal Override rating instead of any scheduled seasonal ratings. For resources required to provide AARs, a Ratings Provider would issue a Temporary AAR Exception to address temporary conditions requiring a static rating.