HOMER Knowledge Base
Coincident Peak Demand (CPD)
Product: HOMER Grid
HOMER Grid is not set up to model demand response - the only ways to manipulate your load are to redefine your load, or to do a sensitivity analysis to scale your load. However, HOMER Grid can account for coincident peak demand (CPD) in the scenario that you'd like to install ESS, which will reduce demand during the defined time. Essentially, you'll want to set up a demand charge, which is the CPD. You'll have to define when in the year this event will take place and define the CPD rate. If this CPD penalty is substantial, HOMER Grid will model a system, which looks ahead, sees this high upcoming CPD rate, and will ensure that the batteries are full to be able to reduce grid purchases during this defined time.
If you're modeling CPD this way, check the box for in Project> Settings for calculating two demand limits per month. It calculates slower, but will separately optimize the demand limits for the CPD event and the rest of the month.
HOMER Grid is not set up to model demand response - the only ways to manipulate your load are to redefine your load, or to do a sensitivity analysis to scale your load. However, HOMER Grid can account for coincident peak demand (CPD) in the scenario that you'd like to install ESS, which will reduce demand during the defined time. Essentially, you'll want to set up a demand charge, which is the CPD. You'll have to define when in the year this event will take place and define the CPD rate. If this CPD penalty is substantial, HOMER Grid will model a system, which looks ahead, sees this high upcoming CPD rate, and will ensure that the batteries are full to be able to reduce grid purchases during this defined time.
If you're modeling CPD this way, check the box for in Project> Settings for calculating two demand limits per month. It calculates slower, but will separately optimize the demand limits for the CPD event and the rest of the month.