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About the issue of electricity which is very important for miners to have access to cheap and constant electricity. In Nigeria, most regions do not have access to constant electricity, but there are some areas with constant electricity. I remembered the time I spent in Katsina, although not all areas have electricity, but there was a local government called Batagarawa where almost all tertiary institutions are located, they gave access to 23 hours electricity in a day or more. Also the Katsina town itself have constant electricity, in the GRA, if electricity is poor, there will still be 12 hours electricity in a day, but oftenly having access to more than 23 hours electricity. I chatted with our of our Nigerians that told me of 23 hours electricity in his area too. Although, in my area, electricity is very poor.
What comes to my mind is that, there are places there are constant electricity in Nigeria but few. But, the issue is to know if the electricity is cheap or not. But, there are two types of payment in Nigeria, the prepaid and the post paid. Using post paid, Electricity company in my state do not check Metre at all, thy calculate it based on how big companies and houses are, people can take advantage of this to mine Bitcoin or other crypto assets in Nigeria.
I am not sure about postpaid, it might not be cheap, but users have to calculate this on their own because the bills differ from state to state. I noticed we in my town paid less in electricity than people is another town. Because of this, it will be good for the person that want to mine bitcoin or any other crypto asset in Nigeria to calculate this on his own.
First by checking the watt the miners will consume
Also the watt others like cooling machines will consume during hot weather
Checking also the bitcoin paid by mining pool for the hashes generated for the miners he want to buy.
All thes will be used to calculate if mining is profitable in his area of location in Nigeria. Mining profitability will really differ from area to area.
About the issue if miners, I do not also think ordering from countries like China should be a barrier, but having retailers selling miners here in the Country will make them cheaper, getting it from abroad is not bad after the profitability calculation is made and positive.
The issues about poor electricity no be lie, some things dey very stable and commendable when you're using some parts of North as case studies in Nigeria. Spent few days in a town in North not long a go. To tell you the truth of mining or any thing of such to happen in Nigeria, the person go actually prefer North to any other part of the country but there is something wey no dey well for North like insecurities and banditry and you know say na people wey dey do all these kind work wey get better thing na him dem dey target.
Nigeria no be country for mining except the miner get another means to generate him personal electricity and security. That go even too dey expensive to maintain. Untill when government need make him improve electricity supply and availability of security personnels, a lot of things go still dey pass us by.