Professor David MacKay and the Renewables Delusion

A blog dealing with Sir David Mackay’s charge that renewables CANNOT provide all the energy Britain needs due to lack of land area. After this it would be best to read Mackay for oneself. To me Macaky was a great non-polarising figure on energy and was likely to deflate extreme views from either wing.

Skepteco

“I’m not pro-nuclear- just pro-arithmetic”.

The cause for a rational evidence-based approach to energy policy has suffered a huge loss with the death of Professor David Mackay  three weeks ago, on April 14th.

Mackay, Chief Scientific Advisor at the UK government’s Department of Energy and Climate Change, was the author of Sustainable Energy Without Hot Air, a key text that has been my number one stop to point folks to as a starting point for understanding energy supply and demand. In particular, I have frequently cited this table which explains very well the limitations of wind and solar energy due to their relatively low energy density:

Power per unit land or water area

Based on these figures, population and current energy demand, MacKay calculates that Britain cannot live on its own renewables- they simply need too much land.

By contrast to the 2-20W/m2 that can be achieved through wind or solar pv power, fossil fuels or…

View original post 460 more words

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