We kept up with solar running a residental fridge.
Except for the 2 shortest daylight months, we didn't need the generator at all.
We were full time on an anchored boat. During the short daylight days, we would run the generator 4 or 5 hours, every 4 or 5 days. ( A tank of gas in a Honda eu2000 )
I had 675 watts of solar, wired in series, a 800 AH battery bank and a small 7.6 c.f. fridge with a top freezer.
We started with 600 AH of battery capacity, but added 200 more, to support our first inverter. It drew 4 amps in idle mode. That was almost 100 AH a day. The replacement inverter drew 1/2 an amp, using only 12 AH a day.
A bigger fridge or a power hungry ice maker may not have worked, but we microwaved, made coffee electricly, and watched TV every night with our 2000 watt PSW inverter.
We spent 3 to 4 months afloat in the Keys for 8 years.
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