Annual DG fuel cost calculator

The fuel-use rate must correspond to the operating point and electrical output used.

Units

C_{\text{fuel}} = P \times H \times a \times g \times c_{g}

Calculator

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

Given

C_{\text{fuel}} = 350 \times 5800 \times 0.92 \times 0.01 \times 10 = 186{,}760

Symbol	Meaning	Unit
$C_{\text{fuel}}$	annual DG fuel cost	$/yr
$P$	DG output	kW
$H$	scheduled annual hours	h/yr
$a$	availability	fraction
$g$	fuel use per generated electricity	Mcf/kWh
$c_{g}$	DG gas price	$/Mcf

Symbol	Meaning	Unit
$C_{\text{fuel}}$	annual DG fuel cost	$/yr
$P$	DG output	kW
$H$	scheduled annual hours	h/yr
$a$	availability	fraction
$g$	fuel use per generated electricity	m³/kWh
$c_{g}$	DG gas price	$/m³

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