How much did your setup cost, if you don't mind? Sounds badass.
Built and installed most of it myself over the last 5 years. Started small with a 1000 watt setup that ran me about $5000. Over the years i probably got $70,000 into it. The panels are the cheaper of the parts needed for a grid tie system with backup. I got batteries and they all need to be replaced every 5-10 years or so depending on how many cycles they get on them, i have 8 big deep cycle Absorbed Glass Matt batteries, they cost $1100 a piece. The batteries have to have a charge controller hooked up to each pair, so i have 4 of those, they cost $550 a pop. i have 3 big 6,000 watt inverters that cost 3 grand a piece. Now you got inverters to turn your PV array into 120v power but you gotta have more inverters to be able to turn the PV array power into 24 volt power for the charge controllers power too, so there goes 2 more inverters ( you don't need as big of ones because power use at night isn't as much, so it doesn't take that much out of the batteries) just to keep the charge controllers happy.Then there are the diagnostic stuff that alerts me to things like under-voltage, over-voltage, battery problems, PV array problems, Stuck trackers, ammeter, wattmeter, lots of big fuses anf fuse holders under plxi and lots of big fat wires, plus trenching and installing the pipe to the array etc etc. Oh yeah, the panels behind the house ( I live on a farm) are all on 2 axis sun trackers that keep the panels at the optimum angle to the sun all day, all year. The panels at $300 a pop for me to make are the cheapest parts, but its all built to go for 30 years, cept the batteries.
Mine is about twice that size and spread out amongst 10 trackers, then there are 10 panels on my south facing roof.
I get a check from the utility company every month, my meter runs backwards 99% of the time.
