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Eight hour big battery trumps pumped hydro in NSW long duration storage tender, page-74

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Quamera

2,897 Posts.

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03/05/23

21:51

Post #: 67594915
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Originally posted by walbrook: ↑

A battery may not last many years, depending on how many times a day it is cycled, they also degrade even when not in use.
Also you get out 80% of what you put in, so 50 in and 40 out, after a few years it will be 50 in and 30 out, and so on.

With pumped storage, while the pumps and generators may need replacing the dams will still be in place many years after the battery(or batteries) had to be replaced.

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RTE of a modern lithium battery is 95% and as their capacity degrades with age it is still 95%.
Lithium Ion Battery Round Trip Efficiency-battery-knowledge | Large Power
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