Sure so in that context by county utility I mean the regional provider. In short if it involves hundreds of kilowatts of power and a timescale measured in multiple decades I want a large stable body consisting of professional specialists to manage it. I don't trust an HOA or other gathering of non-expert locals with potentially high turnover with that sort of infrastructure.

Even the battery installation for a large house borders on questionable. That's not a utility closet your average person should be wandering into under any circumstances and it's easy to run up a massive bill in an instant (if you aren't lucky you might simultaneously kill yourself) but at least that's limited to your personal property.