Work out grid peak shaving savings instantly with clear inputs, formula shown and shareable results.
Peak shaving reduces the billed maximum demand by discharging storage or curtailing load during the site's peak. Saving is the kilowatt reduction times the demand charge times twelve months. Because the charge applies to the single highest interval, even a short well-timed discharge captures the full saving.
Peak shaving saving
Annual saving = (peak demand - shaved demand) x demand charge x 12
Payback
Payback years = system cost / annual saving
Predicting the peak. Missing one interval in a billing period forfeits the whole month's saving, so control must be forecast-driven with conservative thresholds.
Yes. Where the billed demand is the highest of the last twelve months, a single missed peak locks in a high charge for a year, which greatly raises the value of reliable control.