UBB Bidding Adder Column
Column Type = Text

The UBB Bidding Adder column allows the user to specify a bidding adder, which will be applied only to the Upper Bidding Block (UBB) of the resource as defined in the UBB Segment Size column.  This simulates bidding at prices that are greater than the cost of a resource.  The commitment penalty for non-committed, non-cycling units will override any bidding factor set for those units.

NOTE: Use the logic switch Treat bidding adder as nominal, found in the Resource folder of Simulation Options, to determine this input as real or nominal dollars.

Example:

UBB Dispatch Cost = UBB Variable Cost + UBB Bidding Adder

Where UBB variable cost includes the input variable cost and fuel cost.  

Also note that a UBB bidding adder may be used in conjunction with a UBB bidding factor.  In this case the UBB bidding factor is applied to the UBB variable cost and then the UBB bidding adder is applied.

Example:

UBB Dispatch Cost = UBB Variable Cost * (1+UBB Bidding Factor) + UBB Bidding Adder

 

 NOTE: The Use bidding logic switch must be set to apply bidding logic to the study, located in the Resource folder of Simulation Options.  The use of bidding logic will override any general resource dispatch margin specified for the study.

 NOTE: If the FUEL reference is specified for this variable, this column must also be added to the Fuel table and the value there will be applied.

 

 Input Tables

 Resources Table

 UBB Bidding Adder Column