The fruits of EV technology are vast and still being discovered.

The big reuse: 25 MWh of ex-car batteries go on the grid in California“Batteries with performance too low for driving can still store a lot of charge.”
Summary:- “a [globally] growing collection of batteries that can still hold roughly 65-85 percent of their original capacity but can no longer provide the performance expected for automotive use. While the performance will continue to degrade over time, grid-level power storage doesn’t require the rapid charge or discharge behavior that puts the most stress on the battery’s capacity. So the company expects to get significant use from them before they’re sent on for recycling”

Read the full article here: https://arstechnica.com/science/2023/02/the-big-reuse-25-mwh-of-ex-car-batteries-go-on-the-grid-in-california/

25 MWh is an insanely high figure, if they managed to do this from trash then just imagine the possibilities.

It is the 4R’s of environmental engineering which had later been adopted as the European Waste Framework Directive: Reduce, Reuse, Repurpose, Recycle.