The current problem for miners is finding cheap electricity, which is becoming more expensive every year. Newcomers are reluctant to enter this risky business.
I'm wondering how effective could having alternative source of renewable energy could be when we make use of the energy from solar panel, wind or any other source that could in cure less cost on the cost of energy demand, to be honest government are taking advantage of this uppon miners and they are not even making provisions to make mining encouraging to those intending to do it.
They can come in by providing for them services that could encourage mining, this could be in form of loans, setting up alternative grid for power supply to make it affordable for everyone, some miners will have to sell their bitcoin to meet up some demands, instead of investing or holding their bitcoin reward as the challenges are more, though I won't be surprised anyway, since they have once attacked on bitcoin mining.
Government regulation is not clear yet here in my country about having a miner, but the biggest challenge here when building or having a small mining farm is the electricity cost, which is too expensive compared to the past. I had multiple ASIC units and rigs. However, nowadays it is no longer profitable. I am planning to have a solar but still want the ASIC. The problem is that I will need big set of solar to be able to run a single ASIC unit 24/7.
It's not the same as before; you can easily start mining after you buy and complain later about the noise.
Don't forget the noise; it's also one of the challenges.
This aspect of the noise captivated my attention the most, maybe this current dispensation could possibly bring a solution to ASICS Miners that don't make noise as well as consume more electricity.