Too funny Steve! People are missing the point, or have misinterpreted some comments I have made. Or, I stated something in a not perfect manner. It isn't necessarily about what State you live in, it is about your AHJ. Our State of Confusion is still on 2017, or something like that. But our City has adopted 2020. They are understaffed, and don't have enough expertise on solar. So when you ask them a question, they punt it to the State officials to answer, because that is where the Fire Code people are. And those, very friendly people (seriously!) then say it is up to the AHJ, so make your case there. Back to where you started, and the people you already talked to tell you to fill out the online form that asks the Utility to evaluate your project.
You can do a solar project here, and not sell energy to the Utility. Then you fill out a rather normal application with the City, but in the end, the Utility will not energize the new equipment demanded by the City, until City puts their tag on it with written permission, and a file number. And the City enforces 2020, and interprets that to be all UL listed or NRTL approved equipment, including batteries, ESS, etc. But there is a catch...the Utility specifies what equipment can be connected to their grid, so if they see, for example, an MPP inverter, they won't energize. That is why I asked Will about his regulation in Nevada. It wasn't to make him defend himself, it was to help prevent people from making the same mistake I did. In my case, buying Victron and lithium DIY batteries that I cannot hookup in the City. Legally hookup, and maintain an occupancy permit.
What State I live in has no bearing on this issue, because it is up to the AHJ, unless your State has other laws. I don't know...I'm not a lawyer, and I'm not looking for legal advice from other people on this forum. I own property in more than one State, and I take out permits for my work. For those people who don't think that an AHJ can make your life hell, I will mention this one tidbit: I spend a lot of money rebuilding properties, and have done so in half a dozen states. I cut no corners, and do very high quality work. I once bought a 22,500 square footing building in the Midwest to use as a workshop, and to store all my tools, shop equipment, etc. We would go from renovation to renovation, and spent half our time moving tolls and supplies from one place to another. So I bought a huge brick commercial building, and dumped $450,000 cash into modernizing it. The City there sent me legal notices that because the 3rd floor of that building had 6 empty apartments, and because I wasn't living in it (or someone else) that it was "abandoned". They fought me, and tried to fine me for over 2 years, although we were down there everyday using our new Square D 400 amp I-line panel with 3 phase 480v. I spite of the fact I restored a crappy old building that formerly had drug addicts living illegally in it. The reason they did it? Because they wanted me to turn all of the apartments into low income housing, and I refused. They would have given me a LOT of money to do so, and guaranteed rents even if no one was living there. This was 20 years ago, but does this sound anything like what is going on right now all over the US with homeless? Drug addicts? To finish that story, I ended up selling the building at a huge loss after some gangs managed to move into the neighborhood, and run down all the property values to the point where no one would move there but trouble makers.
I take all of this NEC 2020 stuff seriously, because I know what can happen if you get on the wrong side of a dispute.