this post was submitted on 20 Nov 2023
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This Southern California solar farm is using retired EV batteries for storing the power and then send to the grid when needed. This way the retired batteries can extend their usefulness for several... (grist.org)
submitted 1 year ago by L4s@lemmy.world to c/technology@lemmy.world
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This Southern California solar farm is using retired EV batteries for storing the power and then send to the grid when needed. This way the retired batteries can extend their usefulness for several...::A Southern California company is showing how repurposing EV batteries for stationary storage can extend their usefulness for several years.

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[–] Nighed@sffa.community 21 points 1 year ago (19 children)

I'm assuming that doing full charge/discharge cycles on them daily will put more wear on them than every day driving would?

But if your buying them at scrap value and the. Still selling them as scrap after a few more years I guess it works out.

[–] banneryear1868@lemmy.world 7 points 1 year ago (2 children)

In practice they're used more as a sort of capacitor to provide voltage regulation on the grid, basically what gas is doing for reliability. Not sure how often that wouldn't involve a full discharge, but I know most gas in this context is running way below its capability.

[–] Nighed@sffa.community 1 points 1 year ago (1 children)

It sounds like this is being used for day/night storage here as opposed to spot demand, so it may be using more of the charge range.

I wonder if these batteries have reduced peak power output, can they fulfil the kind of balancing that you are suggesting? I guess if they had enough it would be fine.

[–] banneryear1868@lemmy.world 1 points 1 year ago

I just assume so because of their application in EVs but might also depend what kv level lines they're stepped up for.

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