[m55au]

It is surprisingly hard to find reliable figures. Best I could do was a global solar installation of 2-3 TW and global BESS of around 200 GW/500 GWh right now.

China is leading in both, but I'm more interested in local BESS and other storage deployments locally in northern Europe. I think for example Spain started getting more heavily involved only after their massive blackout. According to those links there is a very large overcapacity in battery production, but I don't see it reflected here. I'm sure it will happen at some point though.

[toomuchtodo]

https://ses.jrc.ec.europa.eu/storage-inventory provides European battery storage inventory, but to your point, it will take time for manufactured BESS to be deployed. Spain, only after the recent blackout, has moved towards mandating storage paired with renewables for grid services to improve reliability and health.