We've recently finished this off-grid cabin system in Merrill.
We installed 7.92kW of Panasonic solar panels on the roof to compliment the 2.56kW ground mount already there.
We upgraded his lead acid battery system to 20kW of lithium ion storage (400AH). The Blue Ion batteries can discharge up to 99% of their capacity.
He has two Magnum inverters totaling 8,800 watts.
The system has an automatic generator start and data logging with web monitoring so the customer can view his system status from home when he is not at the cabin.