[yessql]

Utilities have to have excess capacity available to spin up instantly to meet demand. So you have to compare the cost and maintenance with a natural gas peaker plant. I think there is a place for Tesla's PowerPack to replace the least used peaker plants.

[toomuchtodo]

Tesla PowerPacks are already replacing three peaker plants (that I know of).

The more expensive the peaker, the faster the payback time.