The more a country depends on such sources of energy, the more there will arise – as Germany is discovering – two massive technical problems. One is that it becomes incredibly difficult to maintain a consistent supply of power to the grid, when that wildly fluctuating renewable output has to be balanced by input from conventional power stations. The other is that, to keep that back-up constantly available can require fossil-fuel power plants to run much of the time very inefficiently and expensively (incidentally chucking out so much more “carbon” than normal that it negates any supposed CO2 savings from the wind).
Which is something I have been warning about for years. Do read the whole thing, including the tidbit about the industrial plant badly damaged by a momentary loss of power.
That is what is going to be happening right here in this country. And it is going to be worse with more than 200 coal plants coming off line in the next few years.