I think part of this power issue is the centralized power generation. What needs to happen is power generation need to be distributed. More localized solar and wind generation.
All the different types of energy production have there downfall.
Wind farm: Some can be expensive to maintain - Bearing, lubricants - They don't generate power in low wind and have to be shut down when the winds are too high.
Solar: Resource expensive to make, need strong light to be power efficient
Nuclear: Possible meltdowns and pollution.
Coal & gas: Pollution, using precious resources which are limited.
Hydro: Unless it is a damn or water fall powered it is only for high demand times as water needs to be pumped back up to the reservoir.
There doesn't seem to be any good solution, a move to renewable energy is good but isn't the complete answer since it's generation of power is left to the environment. If only geothermal energy was more available around the world, I do think power generation should be localized to the people that need it and it should be linked like the national grid. Less massive plants more smaller generators that can be ramped up and down depending on local need, not national demand. A lot of energy is lot through the transmission through the grid, even though it is reasonably efficient.
This is just my view, I may be and probably am wrong though
Failure is always an option.