A commercial battery energy storage case study for demand-charge management — worked peak-demand analysis, DoD-adjusted battery sizing, C-rate and PCS selection, predictive dispatch strategy, and a savings calculation from the utility's real demand rate.
The project brief: a manufacturing facility on a commercial-and-industrial rate spikes to a 500 kW demand peak every weekday afternoon, driven by chiller and process-load coincidence, at a utility demand charge of $18/kW-month. Framed as this program's energy-storage integration project, it works from a real interval-data peak-demand pattern through to a sized, selected, and financially justified BESS.
This module walks the whole design the way a real storage systems engineer would: a worked kWh sizing calculation from the target shave through the usable-DoD limit, a C-rate check against the selected LFP rack system, PCS sizing with real ramp margin, why the EMS dispatch strategy has to forecast rather than just react to the load, and a savings/payback calculation with the standalone-storage federal ITC applied. The full worked numbers, complete bill of materials, and finished design reasoning are part of the unlocked module below.