David Milborrow, adviser to the BWEA, takes issue with many of the report's assumptions and results, particularly the possible location of new wind plant and the failure to mention the findings of other studies which have produced less pessimistic results. The authors also ignore expected improvements in wind prediction techniques, which could substantially reduce balancing costs, he says, adding, "As always, the quality of the results depends on the accuracy of the input data."
Green electricity company Ecotricity also challenges the report. The company's Dale Vince says: "I find it quite incredible that this report questions the reliability of wind power when for years we have witnessed the vulnerability of coal and nuclear energy, which are expensive, non-sustainable and have significantly contributed to damaging the environment." Wind is a much cheaper option in the long run, he says. "The fact that the report mentions that the cheapest scenario -- increasing renewables contribution to 20% -- will cost about £150 million is farcical, considering that the nuclear industry has guzzled £50 billion of government money over the years."