Power Factor Correction Calculator

Calculate capacitor bank or inverter reactive power needed to correct power factor at the point of interconnection.

Input Parameters

Results

--
Current Reactive
kVAR
--
Target Reactive
kVAR
--
Correction Needed
kVAR
--
Capacitor Current
A
Note: Many utilities impose PF penalties below 0.90. Modern inverters can provide dynamic reactive power support, reducing need for capacitor banks.

Reference

Q_current = P × tan(arccos(PF_current)) Q_target = P × tan(arccos(PF_target)) Correction kVAR = Q_current − Q_target Capacitor Current = Q_correction × 1000 / (V × √3)