I'd like to point out that in Ontario Canada, the current electricity cost is around $0.15/KWh (it's all tiered so hard to calculate accurately but it's around there)
But with Solar if you go grid tied, the government will sign a 20 year contract with you, with a locked in rate of $0.802/KWh paying you for power generated by a solar setup. It has a max of 10KW capacity though per contract.
With those rates, if you have the skills to build the panels yourself, and frames, and install it all, you can do a system for about $1/W of capacity if you go for a full 10KW system (give or take, and assuming you do all labour yourself)
for a $10K investment you can generate 10KW (peak capacity) which likely averages out to something like 3KW in summer, and 1.5KW in winter spread across 24H based on our sun exposure here. That would generate about $2K a month in summer and $1K a month in winter. Assuming your gear lasts 10year without needing replacement, that puts the income per year at around $18K
But that all has nothing to do with bitcoin mining
Other than that in that home with the solar array, electricity is essentially free after the first 6-8 months.
(and yes anyone who owns a home with enough roof space, and enough sun exposure who doesn't invest in this is insane!) lol