EnergyPlus does not have a way to compute utility costs based on daily peak demand. It does have a Demand Window WIndow Length in the UtilityCost:Tariff object but that reports the day of the month that has the highest usage not what you are describing. A utility tariff that calculates the charges on a daily basis for the peak kW each day seems very unusual. The first thing I would do is review the tariff from the utility very carefully and verify that is really what is being described.

EnergyPlus does not have a way to compute utility costs based on daily peak demand. It does have a Demand WIndow Length in the UtilityCost:Tariff object but that reports the day of the month that has the highest usage not what you are describing. A utility tariff that calculates the charges on a daily basis for the peak kW each day seems very unusual. The first thing I would do is review the tariff from the utility very carefully and verify make sure that is really what is being described.asking for that.