Labor or machine energy intensity calculator

Energy per labor hour, machine hour or shift compares activity only when the time basis is consistent.

Units

I = \frac{\text{Energy}}{\text{Activity}}

Calculator

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

Given

I = \frac{84{,}000{,}000}{6000} = 14{,}000

Symbol	Meaning	Unit
$I$	energy productivity index	Btu/hour or Btu/shift
$\text{Energy}$	energy used in matching period	Btu
$\text{Activity}$	direct labor hours, machine hours, or shifts	hour or shift

Symbol	Meaning	Unit
$I$	energy productivity index	MJ/h or MJ/shift
$\text{Energy}$	energy used during matching period	MJ
$\text{Activity}$	direct labor hours, machine hours, or shifts	h or shift

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