Peak Demand Calculator
Calculate peak electrical demand in kW and estimate demand charges for commercial or residential accounts.
Peak Demand
35.0 kW
Peak Demand vs Demand Charge Rate
Formula
## How to Calculate Peak Demand Peak demand is the maximum power draw at any point, measured in kilowatts (kW). ### Formula **Peak Demand (kW) = Connected Load * Demand Factor** **Monthly Demand Charge = Peak kW * Rate per kW** Demand factor accounts for the fact that not all equipment runs simultaneously. Typical factors are 60-80% for commercial buildings.
Esempio Risolto
A building with 50 kW total connected load, 70% demand factor, and $12/kW demand charge.
- 01Peak demand: 50 * 0.70 = 35 kW
- 02Monthly charge: 35 * $12 = $420
- 03Annual charge: $420 * 12 = $5,040
Domande Frequenti
What is peak demand?
Peak demand is the highest rate of electricity consumption at any moment, measured in kilowatts. Utilities charge for peak demand because they must maintain enough generation capacity to meet it.
How can I reduce peak demand?
Stagger equipment start times, use battery storage for peak shaving, shift loads to off-peak hours, and improve equipment efficiency to reduce simultaneous power draw.
What is a demand factor?
Demand factor is the ratio of actual peak demand to total connected load. It is always less than 100% because not all equipment runs at full power simultaneously.