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HOMER Pro 3.13

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Battery Bank Life

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Type:

Output Variable

Units:

years

Symbol:

Rbatt

In HOMER, two independent factors may limit the lifetime of the storage bank: the lifetime throughput and the storage float life. In other words, batteries can die either from use or from old age. When you create a new storage component, you can choose whether the storage lifetime is limited by time, throughput, or both.

HOMER calculates the storage bank life using the following equation:

equations_R_batt

where:


 

 

Rbatt

= storage bank life [yr]

 

Nbatt

= number of batteries in the storage bank

 

Qlifetime

= lifetime throughput of a single storage [kWh]

 

Qthrpt

= annual storage throughput [kWh/yr]

 

Rbatt,f

= storage float life [yr]

See also

Battery Float Life

Lifetime Throughput