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HOMER Grid 1.4

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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 Size your own , 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:

Size of the PV array

Number of wind turbines

Size of the hydro system

Size of each generator

Number of batteries

Size of the converter

Size of the electrolyzer

Size of the hydrogen storage tank

Dispatch strategy

Maximum grid demand

Decision variables are also known as optimization variables.

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