QUOTE(greyshadow @ Jul 3 2021, 05:19 PM)
IMO don't fall into the trap of solar energy = cheap energy
the initial investment to setup a proper solar grid isn't that cheap also, and don't forget the solar grid isn't maintenance free as thought by many ppl, there are batteries that requires frequent maintenance and require changes after certain years
and those cheap solar solution from china? my friend did some government projects using them, based on their experience with it? better stay away for large scale project that need long term stability
if you already have an existing solar grid, by all means use it
but to built a new solar grid just for mining? i won't recommend it
well compared to US made huawei inverters and battery solutions are actually pretty good, a few LSS running these. for cost wise use cheaper solar board since those are another disposable also, ultimately you would want a hydro plant since its the most stable of all. Solar farms maintenance is not as troublesome as asic mining farm maintenance if you are running on used machines. your initial investment is definitely cheaper than scoring 30 units of S19 fyi.
dont over kill the project, just poured in enough then should be fun. s9 score in about 100 or 150 unit, if looking for daily output of 7200 kwh, space about 20 to 30k sqft should be fine. off grid solution is a lot more cheaper than feed in tariff as more complicated inverter required and works to be done to connect to the grid. 150 units of s9 you are making about 15k usd a month. ROI if kang tao stock is about 1 or 2 months for your s9, solar system another 5 months to go. after that its all money making since spoilt alrd you just change, maintenance is cheap as life expectancy for the component is about 8 months +-. in the end of the day you still make about 1.5x from initial capital. not super lucrative but better than buying property and rent out. buy industrial property copy and paste above you are accumulating wealth slowly and steadily. only down side is you are creating a lot of e waste in the process, who knows later will you get a e waste recycle license and branch out.
mining is always about capital management and leveraging on resources. be creative and play around, if you are aftering stability power system, better be mining host compared to mine yourself. since china has a lot of operator fleeing, rm 25cents per kwh is still good rate.