Pretty interesting. I have a friend who runs solar in his RV. I've thought about just getting an all-in-one unit for the house and doing ground solar this year. He has old batteries I can probably buy off him and there are a lot of places that sell old solar panels. I was just going to do ground solar for experimenting.
Only thing that is out of date is that the entire positive side is now 4/0 and the master switch is a big 500 amp unit vs. the previous 275 amp rated switch.