Mining on solar

Hello all. I have a spare small solar system and I was wondering if it is possible to use it for crypto mining, instead of selling it. It can provide about 400W of power, so i am looking for something low-power.

Also, during the night it will be off, so I am wondering if that will be an issue for the mining rig.

I am new to crypto mining, that's why I am asking for my options here.

Also, i am not sure what kind of profits would I expect, can someone let me know about that as well.