# Energy Efficiency

 Output: Input:

Output: `Press calculate`

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Formula:`Energy Efficiency (%) = (Output / Input) × 100`

## Introduction to Energy Efficiency Calculator

Energy efficiency is a measure of the amount of useful output of energy in a system compared to the input provided. The formula for calculating energy efficiency as a percentage is given by dividing the output energy by the input energy and then multiplying by 100. In this formula, the output represents the useful output energy, and the input represents the input energy supplied to the system.

## Parameter usage:

• `output` = useful output energy
• `input` = input energy

## Example valid values:

• `output` = 500 kWh
• `input` = 1000 kWh

## Output:

• `energy efficiency (%)` = calculated energy efficiency as a percentage

## Data validation

The values of output and input should be greater than zero.

## Summary

This calculator provides the energy efficiency of a system based on the useful output energy and the input energy supplied.