How Much Is a Lower Peak Demand Worth?
Estimate annual electricity bill savings when operational changes, controls, batteries or other measures reduce your billed peak demand.
Why reducing kW can save money
Demand charges can make the short peak matter financially even when total monthly energy consumption is unchanged. Lowering that peak can reduce the demand component of a bill.
Peak reduction is not the same as energy reduction
Efficiency measures reduce kWh. Peak management targets kW. A project can therefore reduce demand charges without materially changing total monthly energy.
Where batteries can fit
A battery may discharge during a targeted peak period to reduce grid demand. For the strategy to work, the battery must be capable of responding at the right time and the tariff must value the reduction as expected.
Use realistic reduction assumptions
A proposed reduction should be supported by interval demand data, operational schedules or a dispatch model rather than assuming that a nominal system size automatically equals peak reduction.
FAQs
Does reducing peak demand always save the full demand rate?
Not necessarily. Tariff rules can limit how billed demand is calculated.
Can this include project payback?
Yes. Enter the upfront project cost to estimate simple payback.
Does it include energy savings?
No. It isolates the demand-charge effect.
Can solar reduce demand charges?
Potentially, when solar generation overlaps the tariff's relevant demand interval.