We are constantly being told that wind turbines produce the cheapest electricity. I have produced plenty of information to refute that in previous posts, but in the short video below by Paul Burgess he explains how quickly turbines can deteriorate and how the maintenance cost increase during the first ten years of use. Also their efficiency drops off quite rapidly.
Paul Burgess Basics 2 The Lifespan of Wind Turbines (youtube.com)
The main reason why renewables, such as wind and solar, will not be as cheap as coal or gas is because they are intermittent sources and so they require back-up for when the sun is not shining or the wind is not blowing.
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