Currently, we typically require the RE and ES portions of a hybrid project to be built in a fixed ratio, specified by the parameter storage_hybrid_capacity_ratio. However, we probably want to allow the storage to be built indpendently, up to the capacity of the RE generator (a ratio of 1).
Mostly, this only requires changes to the inputs: if we leave the parameter blank, the constraint is skipped, but we must also change the maximum build capacity for the storage up to the max we are willing to consider.
However, we might also need to add a minimum build capacity for the storage project, if built. This should be able to be done with the existing minimum build parameter, unless we want to specify a minimum ratio instead of a minimum absolute value. In the case of a minimum ratio approach, we would need to add a new parameter.
Currently, we typically require the RE and ES portions of a hybrid project to be built in a fixed ratio, specified by the parameter
storage_hybrid_capacity_ratio. However, we probably want to allow the storage to be built indpendently, up to the capacity of the RE generator (a ratio of 1).Mostly, this only requires changes to the inputs: if we leave the parameter blank, the constraint is skipped, but we must also change the maximum build capacity for the storage up to the max we are willing to consider.
However, we might also need to add a minimum build capacity for the storage project, if built. This should be able to be done with the existing minimum build parameter, unless we want to specify a minimum ratio instead of a minimum absolute value. In the case of a minimum ratio approach, we would need to add a new parameter.