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HOMER Pro 3.9

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Decision Variable

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A decision variable is a variable whose optimal value is determined during the course of the optimization process. An example is the size of the PV array. If you are specifying your own Search Space , HOMER considers each different PV array size you specify and finds the value that results in the least net present cost.

The decision variables in HOMER are:

the size of the PV array

the number of wind turbines

the size of the hydro system

the size of each generator

the number of batteries

the size of the converter

the size of the electrolyzer

the size of the hydrogen storage tank

the dispatch strategy

the maximum grid demand

Decision variables are also known as optimization variables.