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Looking at the website for my electrical authority, they state: "Homeowners and anyone excluded from requirements below: Do not submit drawings for review or preapproval. Rules prohibit us from consulting on your electrical system design. If you have a code question, contact your local office...

Maybe I misunderstand the permit process. Is that how its normally done? With previous permitted work I've done, I just did the work and when it was ready paid my fee and they came to inspect it. No drawings or approval process except the inspection. Granted that was for less complex projects.

Thanks. I did talk to KiloVault, who just directed me to ask my AHJ, and I also spoke with Alt-e but they seemed to be unaware of any system capacity limits. I wish there were more examples of UL 9540 compliant systems out there for DIY, as most places are going to require it if they don't...

I am attempting to build an off-grid energy system consisting of 13 kW of solar and around 45 kWh of battery capacity. My area requires NEC 2020, therefore UL 9540. UL 9540 limits residential energy storage systems to 20 kWh or less. Does anybody know if that means one can simply add "systems"...