[Aurornis]

In more well-run locations, power companies are providing incentives to install batteries because they help reduce the load on the grid.

These are plug-in solutions, though. The whole idea is that a permit isn’t required. If approved in your area, you don’t need to work with the power company at all. You just buy one and plug it in.

The plug-in stuff doesn’t play by the same rules as the big installs.

[skew-aberration]

Yes, and non plugin-in batteries don't just need a permit - typically the power company also directly controls the battery, via a web API that the manufacturer provides (at least in Australia, this is a condition for access to the incentives).