I'm curious about what kind of paperwork I need for permitting and grid connection when installing a solar system. Specifically, I want to know if starting with a smaller setup, like a 10 kW system, and later adding another 10 kW would require less paperwork compared to building a larger system right from the start.
4 Answers
In my state, the limit for residential solar systems is 15 kW, so that's something to keep in mind. You can find several solar design plans through a quick Google image search. Plus, sync up with your local code enforcement or permit office since the document requirements can differ quite a bit, and make sure you get utility approval too.
It really depends on your utility company since they often have specific requirements for upgrades. If you're going grid-tied, definitely check with them first to understand what needs to be done. You might end up doing some paperwork twice if you're planning to expand later.
Many inverter manufacturers offer example layout plans for residential grid-tie systems, which can be super helpful to you. Make sure to take advantage of these resources when planning your setup!
You should definitely contact your Authority Having Jurisdiction (AHJ). They'll inform you about what's needed for your permit application. Typically, you'll need a single line diagram that outlines the electrical components and their capacities. This is crucial for passing inspections!