How it works
Required capacitor kVAr = kW × (tan acos(old PF) − tan acos(target PF)).
Input definitions
- Real power (kW)
- Enter the value in the labeled unit.
- Existing power factor
- Enter the value in the labeled unit.
- Target power factor
- Enter the value in the labeled unit.
A worked example
- Real power (kW)
- 100
- Existing power factor
- 0.75
- Target power factor
- 0.95
Assumptions & limits
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-19. Content checked against the stated method and examples. Our verification approach.
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Common questions
Is this enough to specify a capacitor bank?
No. Harmonics, switching steps, voltage, resonance and utility requirements need engineering review.
How does Power factor correction kVAr calculate the result?
Required capacitor kVAr = kW × (tan acos(old PF) − tan acos(target PF)).
What should I verify before using Power factor correction kVAr?
Uses only the values entered. Rates are illustrative inputs, not live quotes, legal rules or personalised advice. Check provider terms, local requirements and measurements before acting.