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HOMER Pro 3.9

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Generator Operational Life

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Type:

Output Variable

Units:

yr

Symbol:

Rgen

In HOMER, the lifetime of generators is specified in terms of operating hours. The number of years that a generator will last is therefore an output variable, which HOMER calculates according to the following equation:

equations_R_gen

where:


 

 

Rgen,h

= generator lifetime [hr]

 

Ngen

= the number of hours the generator operates during one year [hr/yr]

For example, if the generator has a lifetime of 20,000 operating hours and HOMER determines that it will operate 4300 hours per year, then its expected lifetime in years would be 20,000 hours / 4300 hours per year = 4.65 years