I am trying to set up a UtilityCost:Tariff in EnergyPlus in order to apply it to an OS model using the EPlus measure.
The tariff has a 50% ratchet on the peak monthly demand over the course of a year. If the peak annual monthly demand is 2x or more than the current monthly demand the demand change is 1/2 the greater demand x $22, other wise it is the current month's peak demand x $10 (I think anyway).
here is how I think I would set up a normal ratchet:
UtilityCost:Ratchet,
NonCoincident_Demand, !- Ratchet Variable Name
SDGE_AL_TOU_S, !-Tariff Name
PeakDemand, !-Baseline Source Variable
TotalDemand, !-Adjustment Source Variable
Annual, !-Season From
Monthly, !-Season To
0.50, !-Multiplier Value or Variable Name
0; !-Offset Value or Variable Name
UtilityCost:Charge:Simple,
SummerTOUOnPeakDemandCharge, !- Name
SDGE_AL_TOU_S, !- Tariff Name
NonCoincident_Demand, !- Source Variable
Summer, !- Season
DemandCharges, !- Category Variable Name
10.25; !- Cost per Unit Value or Variable Name
UtilityCost:Charge:Simple,
WinterTOUOnPeakDemandCharge, !- Name
SDGE_AL_TOU_S, !- Tariff Name
NonCoincident_Demand, !- Source Variable
Winter, !- Season
DemandCharges, !- Category Variable Name
7.57; !- Cost per Unit Value or Variable Name
I would appreciate someone commenting on this correctness of this approach and tell me where I would enter the different rate for non-coincident demand (22 $/kW). Here is the tariff if anyone is really has too much time on their hands and want to dig into it.
