as jformer said, 240 will make life more difficult when u can plug in.
You can get a 240 inverter of course too.
Mini-splits are really nice. I sure would love to have one. Running this off solar is huge, you know? Do you have enough roof space for the amount of panels that you will need? You also will need a big battery bank depending how long you want to run it, just in the middle of a sunny day, or overnight?
A small gas generator would run this easily, and gas will run it all night. Compared to solar, the small generator (inverter generator) would be more cost effective. Im sure you have looked into this though.
My 2200 inverter gen will run my inefficient 9200BTU roof AC for about 11 hours overnight on I think about 1 gallon (external tanks available). The AC compressor only runs maybe 10-15 mins total each hour.
from a site:
The Ryobi RYi2200 inverter generator is a gasoline (can use E10) powered generator which has a fuel tank capacity of 1 gallon. It provides only run time about 4 or up to 5 hours on one tank of gas at 50% load capacity and around 2.5 hours at full load.