Free Online Solar CUF Calculator for Capacity Utilization Factor
Use our free online solar CUF (Capacity Utilization Factor) Calculator helps you evaluate how efficiently your solar plant is performing by comparing actual energy output to its maximum possible output. Follow the simple steps below to calculate your CUF.
How to Calculate CUF for Solar Plants
- Enter Energy Generated (kWh): Input the total energy your solar system generated over a selected time period.
- Enter Plant Capacity (kW): Provide the rated installed capacity of your solar power system.
- Enter Number of Days: Fill in the number of days for which you are calculating the CUF.
- Click “Calculate”: The tool will instantly compute your CUF.
- Review the Result: Your CUF will be shown immediately. If your value is too high or data is incorrect, a helpful message will guide you.
- Click “Reset”: Use the reset button to clear all fields and perform a new calculation.
Note: The CUF value typically ranges from 10% to 25% for most fixed-tilt solar power plants and can reach 30% to 40% for single-axis and dual-axis tracking systems, depending on irradiance, system quality, location and maintenance. Low irradiance can significantly reduce CUF, sometimes even dropping it below 5%.