用电峰值需求计算器
使用用电峰值需求计算器分析电力系统的最大负荷需求。输入各设备功率和运行时间，计算峰值用电kW和需量电费，优化用电策略降低峰值费用。
Peak Demand
35.0 kW
Peak Demand vs Demand Charge Rate
公式
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.
计算示例
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
常见问题
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.