B2U storage solutions is doing this today: https://arstechnica.com/science/2023/02/the-big-reuse-25-mwh-of-ex-car-batteries-go-on-the-grid-in-california/ https:

B2U storage solutions is doing this today: https://arstechnica.com/science/2023/02/the-big-reuse-25-mwh-of-ex-car-batteries-go-on-the-grid-in-california/ https://arstechnica.com/science/2023/02/the-big-reuse-25-mwh... 25MWh is pilot-project size, but they are working through the difficulties and building the tooling to enable re-use.