Annual DG maintenance and materials calculator

Multiply generated kWh by the maintenance/material rate; add any excluded fixed or major-rebuild costs.

C_{\text{OM}} = P \times H \times a \times c_{\text{OM}}

Calculator

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

Given

C_{\text{OM}} = 350 \times 5800 \times 0.92 \times 0.024 \approx 44{,}822

Symbol	Meaning	Unit
$C_{\text{OM}}$	annual maintenance and material cost	$/yr
$P$	DG output	kW
$H$	scheduled annual hours	h/yr
$a$	availability	fraction
$c_{\text{OM}}$	maintenance cost per generated electricity	$/kWh

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