Engineering Tool
Power Factor Correction Calculator
Estimate the capacitor bank rating (kVAR) needed to correct your plant's power factor, reduce maximum demand charges, and eliminate utility penalty surcharges — as per Indian DISCOM tariff norms.
Plant Load Data
Enter values from your latest energy audit or utility bill
kW
Enter a valid load value (kW > 0).
Present average kW demand from your monthly energy bill or substation
records.
PF
0.80
0.50
0.70
0.85
0.95
0.99
PF
0.99
Many Indian DISCOM tariffs use a PF
threshold near 0.95, but thresholds, penalties and rebates vary by utility and consumer category. Check
your current tariff order.
Savings Estimation (optional)
₹
Used to estimate penalty surcharge removal per DISCOM norms (threshold:
PF = 0.95).
₹/kVA
Per-kVA demand charge from your tariff schedule (typically ₹150–350/kVA
in India).
Results appear here
Enter your plant's active load and power factor values, then click Calculate.
Capacitor Bank Required
0
Compensation needed
0%
–
Existing Max Demand
–kVA
Current apparent power draw at PF –
Corrected Max Demand
–kVA
After correction to PF – — reduction of
– kVA
Calculation method: Capacitor bank
Q = P × (tan φ₁ − tan φ₂)
per IS/IEC standards. Penalty savings based on standard DISCOM surcharge of 1% per 0.01
PF unit below 0.95 threshold. Incentive rebate of 0.5% per 0.01
unit above 0.95 applied where applicable.
Results are indicative calculations for planning purposes. Actual capacitor sizing must be validated by a qualified electrical engineer per IS 1180 / CEA Regulations. Tariff structures vary by DISCOM and state.
Need a power-quality review?
Discuss your requirement
Plan the right correction system for your facility.
We can review demand data, harmonics, transformer loading, tariff conditions, and capacitor-bank sizing.