HOMER Pro 3.9

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Navigation: Glossary

Other Operation and Maintenance Cost

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Type:	Output Variable
Units:	$/yr
Symbol:	Com,other

The other O&M cost is the sum of:

•the system fixed O&M cost

•the penalty for capacity shortage

•the penalties for emissions of pollutants

HOMER uses the following equation to calculate the other O&M cost:

equations_C_om,other

where:
	Com,fixed	= system fixed O&M cost [$/yr]
	Ccs	= the penalty for capacity shortage [$/yr]
	Cemissions	= the penalty for emissions [$/yr]

HOMER uses the following equation to calculate the penalty for capacity shortage:

equations_C_cs

where:
	ccs	= capacity shortage penalty [$/kWh]
	Ecs	= total capacity shortage [kWh/yr]

HOMER uses the following equation to calculate the penalty for emissions:

equations_C_emissions

where:
	cCO2	= penalty for emissions of CO2 [$/t]
	cCO	= penalty for emissions of CO [$/t]
	cUHC	= penalty for emissions of unburned hydrocarbons (UHC) [$/t]
	cPM	= penalty for emissions of particulate matter (PM) [$/t]
	cSO2	= penalty for emissions of SO2 [$/t]
	cNOx	= penalty for emissions of NOx [$/t]
	MCO2	= annual emissions of CO2 [kg/yr]
	MCO	= annual emissions of CO [kg/yr]
	MUHC	= annual emissions of unburned hydrocarbons (UHC) [kg/yr]
	MPM	= annual emissions of particulate matter (PM) [kg/yr]
	MSO2	= annual emissions of SO2 [kg/yr]
	MNOx	= annual emissions of NOx [kg/yr]

You can specify the penalties for each pollutant on the Emissions window. For information on how HOMER calculates emissions of each pollutant, see the article on how HOMER calculates emissions.