Originally Posted by Vadave311
I will be buying a school bus at the end of May. I will be parking it on some land I bought and I will be converting it into my home. I will not be driving it around. It will stay parked on my property. The issue I'm having is sizing my solar system. I believe I have the ability to install it but I just can't figure what I need to buy. All I will be using electric for is 12v fridge with freezer, 8 led lights, with enough power to charge a few cellphones and a laptop. Stove and hot water and heat will all be propane. I will have a window AC unit but I will be buying a generator to power that.
Any suggestions are appreciated
So what you need to try to do is put together an energy 'budget'. Basically state what you have already stated in a more explicit way. Make a list of your electrical consumers, the power they consume in Watts, and the maximum hours a day they will be used. Multiply watts by hours and that'll give you a decent ballpark of the minimum Watt-hours per day you will need in battery capacity (batteries are rated in amp-hours but amp-hours x voltage = watt-hours). There are spreadsheets that make doing this much easier
Once you calculate how much power you need per day, you can determine your battery bank size, and your PV array size. Another consideration is "days of autonomy" i.e. if there is little or no sun, how many days of battery power do you want to have? Since you have a generator maybe you don't need any days of autonomy.