PV array size vs battery bank

Wyoming Ed

New Member
I'm trying to figure out PV array size vs battery bank. Currently I have 7.5 kw of panels , 48 volt system , 10 kw inverter, 16 gel batteries ( Renogy 200 ah) in series and parallel, maybe 2.5 peak sun in winter. I'm likely using 20 kwh to run furnace and all on a 1600 SQ ft house. The goal is to have enough battery and panels to make it through the night without back up generator..Any thoughts? I saw there is a spreadsheet, I'm not likely skilled enough to use that. Thanks