Yes there are people like myself mining on solar, the problem is you will be spending much money on the solar equipments, I went for a all in one power solution, I will drop a image below and it's 2400watt solar inverter, it has inbuilt lithium ion batteries which are better than lead acids batteries and deep cycle batteries, I only use 2 gpu on the inverter and it lasted me for 12 hours
You can use solar panels to recharge or electricity to recharge too, way convenient than buying separate charge controller and separate inverter
I'm betting this solar/inverter generator will cost as much as 1600$ or more, it sure make things easier but buying batteries and other parts will lower your cost, I can buy 4 pieces of 200ah batteries and cheap 2000 watt inverter, charge controller and panels with that 1600$, meaning I will get more battery backup that will last more than 12hours, let's do the math You can use solar panels to recharge or electricity to recharge too, way convenient than buying separate charge controller and separate inverter
4x 200ah batteries = 9600 watts, since you can't drain more than 50% power you are left with 4800watts at your disposal, that's enough for 300watt gpu mining, assuming you are using two gtx1660 super with motherboard, you will get 16 hours of mining off the batteries alone