Power From Wind Turbines Slumps – Due To Lack Of Wind

  • Date: 26/09/14
  • Emily Gosden, The Daily Telegraph

Power produced by wind farms slumped by a fifth in the second quarter of this year, despite hundreds of new turbines being built – because it wasn’t very windy.

Official Government statistics published on Thursday show that in the three months to the end of June, the amount of electricity produced by offshore wind farms fell by 22 per cent, to 2 terawatt-hours (TWh), compared with the same period the year before.

Yet the number of offshore wind turbines operating grew significantly – with 4.1 gigawatts (GW) of capacity installed in the seas around the UK by June this year, up from 3.5GW by June 2013.

Power output from onshore wind farms also fell, by 17 per cent to 3.22 TWh. The fall came despite dozens of new wind farms being built, increasing onshore wind capacity by 14 per cent over the same period. […]

About 900 turbines were constructed on and offshore over the course of 2013, according to Renewable UK.

Dr John Constable, director of the Renewable Energy Foundation, which publishes data on the sector and is critical of subsidy costs, said: “The latest DECC data is further confirmation that wind power output is highly variable over all timescales, minutes, hours, months, and even from year to year.

“These variabilities are physically manageable but they have highly significant negative economic impacts on the rest of the power generation fleet, whose market is made very uncertain, and these uncertainties ultimately mean much higher costs for consumers.”

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