Cost? about $3400 before rebates.
During daylight, it should run everything except the electric hot water tank. But for now, I'm running lights and electric heaters in the winter and an air conditioner and lights in the summer. The system payback, very conservatively, is 3.8 years. I think realistically, 2.3 years.
The last set of batteries, which I murdered, lasted 6 years. My batteries lasted 9 hours past sunset last night. They cut out at about 70% charge. So, I'm on grid power for about 5 hours. That makes a big difference in the propane and electric bill. A pallet of PV panels can be had for 80 cents per watt if you shop around.
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