The battery sizing options currently allow you to size the battery by specifying a desired nominal capacity as a pair of kWh - kW values (AC or DC). This requires that when doing parametric studies on battery size, you have to specify pairs of values as parametric inputs.

Adding an option to specify the desired capacity as a kW value paired with a nominal number of hours of storage would solve this problem because you could set the hours of storage value on the input page and do the parametric study on a range of kW values.