> If large scale battery storage is already cost competitive with turbines and there is still more low-hanging fruit, then presumably battery costs will continue to fall faster than for turbines?

Yes, and this is the assumption that the comment I replied to seems to disagree with. I think the assumption is right and the disagreement is wrong.

> That said, I doubt the cost of either of these technologies is driven so much by the technologies themselves so much as it is our ability to manufacture and install large volumes of them at scale.

Deployment is part of the learning curve.

I think you're agreeing with me (and disagreeing with the comment I replied to) here :)