I am simulating Zambia's energy mix for the year 2050 and i have a problem with the outcome of the results of the capacities of future plant addition.When i run the simulation the capacities of the existing plants are fixed as expected,however, for the future plants once the capacity has been added in a particular year the capacity figure keeps on doubling until the last year of the simulation instead of suggesting imports once the available capacity runs out,resulting wrong energy balance. In the attached the first 3 plants are existing and have fixed capacities, followed by 3 future plant whose capacities keeps on changing until the end year simulation and exceed the potential of that particular site.

Kindly help resolve this problem

Without seeing more details about your model I can only speculate. But if you are allowing endogenous capacity additions, then these results are not uncommon in LEAP, because it will attempt to construct enough endogenous capacity to satisfy your Planning Reserve Margin in each year of simulation (unless you constrain it further).

What information have you included within LEAP to indicate that the capacity of each of your three future plants should be constrained based on the potential of those sites? Have you Maximum Built Capacity expressions?

Please review these help files on endogenous capacity, and let us know if you still have questions.

https://www.energycommunity.org/Help/Transformation/Endogenous_Capacity.htm

https://www.energycommunity.org/Help/Transformation/Endogenous_Capacityu_Expansion_Calculations.htm

Good luck,

Taylor