zerohedge.com by Chris Morrison via DailySceptic.org,
It could be argued that the basic arithmetic showing wind power is an economic and societal disaster in the making should be clear to a bright primary school child. Now the Oxford University mathematician and physicist, researcher at CERN and Fellow of Keble College, Emeritus Professor Wade Allison has done the sums. The U.K. is facing the likelihood of a failure in the electricity supply, he concludes.
“Wind power fails on every count,” he says, adding that governments are ignoring “overwhelming evidence” of the inadequacies of wind power, “and resorting to bluster rather than reasoned analysis”.
Professor Allison’s dire warnings are contained in a short paper recently published by the Global Warming Policy Foundation. He notes that the energy provided by the Sun is “extremely weak”, which is why it was unable to provide the energy to sustain even a small global population before the Industrial Revolution with an acceptable standard of living. A similar point was made recently in more dramatic fashion by the nuclear physicist Dr. Wallace Manheimer. He argued that the infrastructure around wind and solar will not only fail, “but will cost trillions, trash large portions of the environment and be entirely unnecessary”.
In his paper, Allison concentrates on working out the numbers that lie behind the natural fluctuations in the wind. The full workings out are not complicated and can be assessed from the link above. He shows that at a wind speed of 20mph, the power produced by a wind turbine is 600 watts per square metre at full efficiency. To deliver the same power as the Hinkley Point C nuclear plant – 3,200 million watts – it would require 5.5 million square metres of turbine swept area.
It is noted that this should be quite unacceptable to those who care about birds and other environmentalists. Of course, this concern does not seem to have materialised to date. Millions of bats and birds are calculated to be slaughtered by onshore wind turbines every year. Meanwhile, off the coast of Massachusetts, work is about to start on a giant wind farm, complete with permits to harass and likely injure almost a tenth of the population of the rare North Atlantic Right whale.
When fluctuations in wind speed are taken into account in Allison’s formula, the performance of wind becomes very much worse. If the wind speed drops by half, the power available falls by a factor of eight. Almost worse, he notes, if the wind speed doubles, the power delivered goes up eight times, and the turbine has to be turned off for its own protection.
The effect of the enhanced fluctuations is dramatic, as shown in the graph above. The installed nominal generating capacity in the EU and U.K. in 2021, shown by the brown dashed line, was 236 GW, but the highest daily output was only 103 GW on March 26th. The unreliability is shown to even greater effect in the second graph that plots the wind generated offshore in the U.K. in March last year.read more