Christopher Booker explains in the (UK) Telegraph why reliance on renewables like wind and solar cause electricity rates to skyrocket and put an economy at risk. As Mr. Booker explains:
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).As consumers we are used to hitting the switch and lights coming on. We have no idea of the complexities that are involved in matching the vagaries of solar and wind-produced electricity to the steady demands of the electrical grid. If our governments insist on more renewables in energy companies' portfolios, we may soon find out.
This was one example of what can happen to manufacturing when electricity is unreliable, which is especially interesting in light of the possible start up of the aluminum smelter in Ravenswood:
Now the problem for the German grid has become even worse. Thanks to a flood of subsidies unleashed by Angela Merkel’s government, renewable capacity has risen still further (solar, for instance, by 43 per cent). This makes it so difficult to keep the grid balanced that it is permanently at risk of power failures. (When the power to one Hamburg aluminium factory failed recently, for only a fraction of a second, it shut down the plant, causing serious damage.) Energy-intensive industries are having to install their own generators, or are looking to leave Germany altogether.
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