Power Factor Correction Study Template (Excel)
Free download · Excel (.xlsx)
Power factor correction reduces utility penalties, frees up transformer capacity, and lowers cable losses. This template documents the PFC study methodology: existing power factor from metering data (or utility bills), active power (kW), reactive power (kVAR), target power factor (typically 0.95-0.98), required compensation kVAR, capacitor bank selection (fixed or automatic staged), harmonic resonance risk assessment (system resonant frequency vs dominant harmonics), and detuned reactor requirement. Includes payback calculation based on utility tariff penalty rates. Use with ECalPro's power factor correction calculator for automated kVAR sizing and harmonic risk checks.
What's Included
How to Print
- ●Open in Microsoft Excel 2016+, Google Sheets, or LibreOffice Calc
- ●Add your company logo and project details to the header
- ●Copy data rows to add more circuits or equipment
- ●Print on A4 or A3 landscape for site records
- ●Keep completed records for design verification and audit trail
Try the Interactive Calculator
Need precise calculations beyond quick reference? Try our free online calculator with full clause references and professional report output.
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Frequently Asked Questions
How do I calculate required kVAR?
kVAR = kW × (tan(cos⁻¹(existing PF)) − tan(cos⁻¹(target PF))). For example, a 500 kW load at PF 0.75 targeting PF 0.95 needs approximately 285 kVAR. Use ECalPro's power factor calculator for instant results.
Do I need harmonic filters with capacitor banks?
If your system has significant non-linear loads (VFDs, UPS, LED drivers), the system resonant frequency may coincide with a dominant harmonic, risking capacitor failure. A 7% detuned reactor shifts the resonant frequency below the 5th harmonic. This template includes the resonance check calculation.
What is a good target power factor?
Most utilities penalise below PF 0.90. Target PF 0.95-0.98 for optimal balance between correction cost and penalty savings. Over-correction above PF 0.99 can cause leading power factor issues.