Period load factor (LF) calculator

Compare average demand with peak demand using energy, peak and hours from the same complete period.

\mathrm{LF} = \frac{E}{P_{\text{peak}} \times h}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

\mathrm{LF} = \frac{21{,}600}{60 \times 720} = 0.5

Symbol	Meaning	Unit
$\mathrm{LF}$	average-to-peak load ratio	ratio
$E$	energy during the full period	kWh
$P_{\text{peak}}$	maximum interval demand during the period	kW
$h$	total period duration	h

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.