Power Factor Correction Calculator

Calculate required capacitor bank size and analyze power factor improvement

Calculator
Cost Savings
History
Information

Input Parameters

Before Correction

Real Power: -

Reactive Power: -

Apparent Power: -

Power Factor: -

Phase Angle: -

After Correction

Real Power: -

Reactive Power: -

Apparent Power: -

Power Factor: -

Phase Angle: -

Power Triangle Visualization

Required Capacitor Bank

Capacitor Size

-

Capacitance

-

Power Factor Improvement

-

kVA Reduction

-

Important Notes:

  • Ensure capacitor banks are properly rated for the system voltage.
  • Choose only film/metalized capacitors resistant to harmonics.
  • Use protective devices like contactors or timed switching.
  • Real capacitance may vary based on tolerances.
  • Consider harmonic distortion when selecting capacitors.

Cost Savings Analysis

Monthly Savings

Energy Cost Savings: -

Demand Charge Savings: -

PF Penalty Avoidance: -

Total Monthly Savings: -

Annual Savings

Total Annual Savings: -

Payback Period (months): -

ROI (1 year): -

Simple Payback: -

Calculation History

About Power Factor Correction

What is Power Factor?

Power factor is the ratio of real power (kW) to apparent power (kVA) in an electrical system. It measures how effectively electrical power is being used.

Why Improve Power Factor?

  • Reduces electricity bills by eliminating penalty charges
  • Increases system capacity and reduces losses
  • Improves voltage regulation and equipment performance
  • Reduces carbon footprint and energy consumption

How Power Factor Correction Works

Capacitors are added to the electrical system to supply reactive power, which reduces the reactive power drawn from the utility. This improves the power factor and reduces the apparent power demand.

Typical Power Factor Values

  • Ideal: 1.0 (purely resistive load)
  • Good: 0.95 - 0.99
  • Acceptable: 0.85 - 0.95
  • Poor: Below 0.85 (may incur penalties)