Wind farms: Britain is 'running out of wind'

Statistics suggest that the winds that sweep across the British Isles may be weakening

According to government figures, 13 of the past 16 months have been calmer than normal - while 2010 was the “stillest” year of the past decade.

Meteorologists believe that changes to the Atlantic jet stream could alter the pattern of winds over the next 40 years and leave much of the nation’s growing army of power-generating turbines becalmed.

The Coalition has drawn up plans to open more wind farms in an effort to meet Britain’s European Union target of providing 15 per cent of its energy from renewable sources by 2020.More than 3,600 turbines are expected to be installed in offshore wind farms over the next nine years.

But statistics suggest that the winds that sweep across the British Isles may be weakening. Last year, wind speeds over the UK averaged 7.8 knots (8.9mph), a fall of 20 per cent on 2008, and well below the mean for this century, which stands at 9.1 knots (10.5mph).

Dr David Brayshaw, also from Reading’s Department of Meteorology, added: “If wind speed lowers, we can expect to generate less electricity from turbines - that's a no-brainer.”
The Telegraph UK