Alternative electricity for mining is very necessary, given the high cost of electricity in some regions of the planet. Solar panels, wind generators, hydro generators, etc. — everything can be adapted for efficient mining. However, the advantage will be on the side of large mining farms, as they can buy this equipment in bulk at discounted prices. Perhaps, small miners should purchase equipment together with other miners to save money, and then earn more on mining cryptocurrency.
Remember that, if wind , solar or any other renewable source, if grid tied, electricity provider will never pay or give you what you gave them and most places you pay taxes for that, I know is bullshit but that is how governments are ran by crooked people all around it. If off grid then your kwh in your home country must be greater than $0.50 to be worth, Germany perhaps? Anybody saying that using batteries for mining is worth is lying blatant. Just to clarify regarding batteries, you will need around 48 x 12v 200ah(60 kilos each battery) to run a mining computer of 1800 watts per 14 hours, the other 11 hours must be ran using the sun power generated electricity, the sun needs to be on its best case scenario, most good places around the world gives 6 hours per day full power on your solar panel. So is pointless because in truth to run 24/7 without problems you will need 17 hours of batteries and the sum of 48 is just for 11 hours, 3 hours more means 12 more batteries, using 4 interconnected on 48v.
https://www.amazon.com/d/Motorcycle-Batteries/12v-200ah-Solar-Power-Battery/B00RPOI7F4Each battery will cost you $350. 48 +12 = 60 x $350 = $21.000 only in batteries for just 1 computer using 1800 watts per hour and that battery will not last much if you dont use it properly, the calculation is based on 30% usage of the full battery power.
Starting battery (Automotive battery etc) : 3-13 months
Marine Battery : 1-6 years
AGM Deep cycle: 4-7 years
Gel Cell Deep Cycle: 2-5 years
Flooded Lead Acid Deep Cycle Battery (L16-RE etc): 4-8 years
The calculation above is based on properly used batteries, most batteries cant be used more than 30% of its full capacity. Want to use 99% of its usage, get better cycle? Then get the tesla batteries made by lition.
https://www.tesla.com/powerwall13.5 kwh but pay attention you can use only 5kwh continuous but if is only for one to 2 mining computers of each 1800watts should be okay. It's a huge investment which might never pay off even if bitcoin is pumped to 100k usd.
Also remember that solar panels have to be triple of what you want, cause 33% is to run the computers and 66% is to recharge the batteries for the night. For example if each panel is 300watts then 6 x 300 = 1800 watts that is 33%, then you need to buy more 12 panels. Total of 18 panels just to run a pc of 1800watts.
So all in all, off grid mining is a fail, on grid is a success but only if your government treats you fairly well which most dont.