Deleted my previous comment due to I made a poor assumption. Is your Wh production so low because you have low loads and your battery is basically always charged?
If so, then you are in a good position to power an AC fridge just fine, with more than enough to operate the inverter and charge the batteries. You will likely produce more energy than you can use, unless you have other loads not mentioned or you upgrade/increase your battery bank.
In Short -
Yes
I went with what I believed are good quality AGMs. Canadian EH? ?? If I didn’t have to worry about 32F I would have gone Lithium.
So, I can discharge those AGMs to 20% SOC. I discharge them nightly to about 83% maybe 70% SOC. If the propane furnace is running most of the night in October. Hence the 0.5 to 1.0 kWh harvest per day.
I went the way of conservation rather than harvest & storage ,,, every 12vdc load I have is very efficient. The Cabin has morphed over 6 years, but this year we finally insulated the walls ?. Still need to insulate the floor.
My energy consumptions with an inverter falls closer to
@sunshine_eggo perspective ,,, but I penciled 85% efficiency not 89% ,,, There Is No Replacement for RWE “Real World Experience”. That being said, I thought the 85% was quite conservative.
You can see when I am away from my cabin it uses 80 Wh per day ,,, that is the Composting Toilet Fan, parasitic drain, & efficiency loss ,,, but mostly the toilet fan.
Once when I was away, I deduced a moth turned on one of my proximity sensor to one of my led lights, praise Victron, it recorded it & the light I am sure I turned off when I locked up the cabin was on a few weeks later ,,, history showed the date the moth turned on the LED. Victron history, math, & a burning light told the tale. Now I pull the fuse when we leave.
12vdc loads; Propane Furnace, ARB Fridge, LEDs, water pump, usb outlets for devices, composting toilet fan, that’s it Bro !!
Conservation.
