kW (kilowatts) and kVA (kilovolt-amps) are two measures of Generator Capacity that are frequently confused. The difference matters because Generators are rated in kVA, but most loads are specified in kW. Mismatch leads to undersized or overpriced equipment.
The Simple Formula
kW = kVA × power factor
For a standard 0.8 Power Factor generator: 1 kVA = 0.8 kW. A 500 kVA generator delivers 400 kW of real power.
| kVA Rating | kW at PF 0.8 | kW at PF 0.9 | kW at PF 1.0 |
|---|---|---|---|
| 100 kVA | 80 kW | 90 kW | 100 kW |
| 200 kVA | 160 kW | 180 kW | 200 kW |
| 500 kVA | 400 kW | 450 kW | 500 kW |
| 1000 kVA | 800 kW | 900 kW | 1000 kW |
| 2000 kVA | 1600 kW | 1800 kW | 2000 kW |
Why Power Factor Matters
Power factor (PF) measures how efficiently electrical power is used. A PF of 1.0 means perfect efficiency; 0.8 means 20% is reactive power. Most industrial facilities operate between 0.8 and 0.95 PF.
Low power factor loads (motors, transformers, fluorescent lighting) require higher kVA ratings even though the kW draw is moderate. Always check your facility’s power factor before selecting a generator.
How to Convert Between kW and kVA
- kVA to kW: Multiply by PF. Example: 100kVA × 0.8 = 80kW
- kW to kVA: Divide by PF. Example: 80kW ÷ 0.8 = 100kVA
- See our detailed kW vs kVA guide
Related Resources
- Diesel Generator Fuel Consumption Guide
- Diesel Generator Price Guide
- Generator Sizing Guide
- kW vs kVA: What’s the Difference
Huaquan Real-World Projects
At Huaquan Power, we’ve deployed generator systems across diverse applications worldwide. Here are some representative projects related to kW vs kVA: Understanding the Difference Between Real and Apparent Power:
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| 新西兰 | 550kW | Industrial Power | 该项目位于新西兰，配置 550kW发电机组 ，用作医院备用电源，保障医院设备在电网中断时的稳定运行。采用静音箱设计，降噪… |
| 柬埔寨 | 400kW | Industrial Power | 该项目位于柬埔寨，配备 400kW发电机组 ，用于缓解当地电力短缺问题，保障工业、商业及居民用电需求。项目验收通过以来，… |
| 菲律宾达古潘市静音型 | 400kW | Industrial Power | 达古潘市是菲律宾著名的“bangus（牛奶鱼）之都”。该项目配备 400kW静音型发电机组 ，用… |
These real-world deployments demonstrate our engineering team’s capability to deliver reliable power solutions tailored to specific application requirements and environmental conditions. View all overseas case studies →
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