Comment by mlyle

> the amount of storage needed was readily affordable.

I'm sorry, I don't think that cost is readily affordable!

> You agree that there's a reasonable chance the price could go down

I think the most likely outcome is that the price goes down. But I also think it's possible that the price goes up (decreasing returns to scale) as you try to build more.

> agree that parts other than the battery chemistry do indeed last much longer.

We often depreciate substations at 40 years despite parts inside lasting longer, and we have a whole lot of experience to value that. We don't have a lot of experience with long term lifecycle of batteries. E.g. recycling and decommissioning of batteries at scale is still a big unknown.