You need a heat pipe between your freezer/fridge and outside. Then it will “function” when it’s colder outside than in your fridge and otherwise sit idle(ish). Sure you’re bringing “cold” into your big warm box (home), you have wood to overcome that. All theory, but it makes sense in my mind!

(Though in most places, it rarely gets colder outside than in your freezer)

When I had 6 100W panels and was trying to keep my laptop (and lights) running off that, then I did a lot more trying to keep them clean. If I was having to burn fuel for electricity, I'd certainly be trying a lot harder to squeeze what I can out the array.

Anyhow, good luck.

I likely am in a similar position. My hope is to get a cistern buried this year so I can have more than 40L of liquid water on hand at any given time... and then maybe even a shower :D Washing myself with a bucket is starting to lose its charm.