[mariebks]

I’m not an expert on this topic, but I think it comes down to cost and scalability. You have to construct a new project with custom specs for the exact site you’re on, and the permitting for a large environmental change is another drag. For large scale batteries, they all are a somewhat complex power electronic wrapper around mass produced battery cell cans or pouches that can be dropped anywhere. The cost declines of batteries are undeniable and are not stopping anytime soon.

[jopsen]

Not to mentioned all the dirty cheap second hand batteries becoming available as electric cars are scrapped.

For grid storage second hand batteries might be fine. If taking them out of a scrapped car is feasible.

[dzhiurgis]

No grid operator going to mess with scrap batteries. Even for home player new cells are so cheap that it's not worth messing around with used ones (esp when considering liability and insurance). Might work in third world countries tho who have even more appetite for reliable power.

[jeffbee]

Grid battery deployment is faster than EV market penetration in the USA. This is not something that can siphon off a fraction of EV batteries. It is a huge market in its own right.

[simfree]

What would be considered ruined Leaf EV batteries that have significant range loss (20% to 50% degradation, for a car that went around 60 miles with a full battery) are being used to cover peak load right now in California and have been used to do so for years.

https://www.youtube.com/watch?v=JqlOlqK_ot8

2nd life use cases for cheap, mass produced batteries like this are more common than you think.

[jeffbee]

But that isn't a mainstream case. It's notable for being weird. The 1000x larger Moss Landing battery facility just uses new, off-the shelf BESS units from LG.