Quote from: Robert N. on March 23, 2020, 10:08:10 PM

BTC in Existence - 18.227.850

This is irrelevant, how many BTC in existence makes no difference in calculating the cost of mining 1 BTC in 2020 Undecided

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[BTC left to be mined - 2.772.150

So is this.

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% of BTC issued - 86.799%

And this.

And the rest is dynamic inputs unless he has a crystal ball that tells him the price of bitcoin in the future as well as the difficulty of every future epoch, this is nothing but pure speculations that can be far from accurate.

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In the case of residential mining, considering the average power cost of 10 cents, you will end up paying 1 BTC in electric bills for mining 1 BTC over the next year.

This can be wrong with the same probability of being right.

I am not trying to underestimate the efforts but this does not make a lot of sense, the result you seeking is based on factors that are unseen, unknown and pretty hard to predict.