Regards,

Humberto

LEAP adds new capacity based on energy demands and reserve requirements. As long as energy demands and reserve requirements are met with the available capacity, LEAP will not add new capacity.

However, it is important to note that LEAP does not automatically retire plants that are specified exogenously (such as existing plants). If you do not retire plants, this will affect the need for future capacity additions. Be sure to retire exogenous capacity through the Exogenous Capacity variable. One way to do this is to use the step function. For example, to retire 100 MW of capacity 30 years from when it was installed, you could write Step(2000, 100, 2030, 0) in the Exogenous Capacity variable. By doing this, you will see additional investment for 100 MW in 2030 to make up for the capacity that was retired.

You could also have an expression that has different capacities retired across different years. For example you could have the expression Step(2000, 100, 2015, 300, 2030, 200, 2045, 0) where 100 MW is retired in 2030, and 200 MW in 2045.

Hope this helps,

Emily