HOMER Pro 3.9

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Navigation: Glossary

Battery Roundtrip Efficiency

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Type:	Input Variable
Units:	%
Symbol:	ηbatt,rt

The round trip DC-to-storage-to-DC energetic efficiency of the storage bank, or the fraction of energy put into the storage that can be retrieved. Typically this is about 80%. HOMER assumes the storage charge efficiency and the storage discharge efficiency are both equal to the square root of the roundtrip efficiency.