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HOMER Pro 3.9

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Generator Average Total Efficiency

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Type:

Output Variable

Units:

%

Symbol:

ηgen,tot

This is the average total efficiency of the generator over the year, defined as the electrical plus thermal energy out divided by fuel energy in. HOMER uses the following equation to calculate the average total efficiency:

equations_eta_gen,tot-average

where:


 

 

Egen

= the generator's total annual electrical production [kWh/yr]

 

Egen

= the generator's total annual thermal production [kWh/yr]

 

mfuel

= the generator's total annual fuel consumption [kg/yr]

 

LHVfuel

= the lower heating value of the fuel [MJ/kg]

The factor of 3.6 in the above equation arises because 1 kWh = 3.6 MJ.

See also:

Generator Average Electrical Efficiency