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# Wind power targets unrealistic, say critics
## Claims in a Government-commissioned report that wind power can supply a
third of Britain's electricity have been condemned as wildly optimistic by
leading experts.
![Wind turbines near Liverpool][1]
Wind turbines near Liverpool Photo: GETTY
By Patrick Sawer 2:29PM GMT 06 Dec 2008
[Comments][2]
Researchers and parliamentarians warned that a heavy reliance on wind energy
would place Britain's energy supplies at risk.
A report by the Committee on Climate Change (CCC), published last week,
maintained that wind farms could play a major role in helping Britain cut its
harmful carbon emissions by 34 per cent in 2020 and 80 per cent by 2050.
It stated: "Despite the inherent intermittency of wind power supply, wind
generation could make a significant contribution to total global electricity
generation and be a major source of electricity in the UK (eg 30 per cent by
2020 and more beyond)."
The CCC, chaired by Lord Turner, the former director general of the
Confederation of British Industry, said that new techniques of energy storage
would overcome the problem of maintaining a regular supply when the wind is
not blowing.
But sceptics say this is far too ambitious because experts have not yet been
able to devise effective ways of capturing and storing electricity generated
by wind. That means a backup system, in the form of nuclear or coal- or gas-
fired power stations, would always be needed.
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John Constable, director of policy and research at the Renewable Energy
Foundation, a think tank, said: "To generate 30 or 40 per cent of our
electrical energy from wind power would present unmanageable and unaffordable
difficulties at the present.
"The CCC's assertion to the contrary is simply out of step with the state of
theoretical and empirical knowledge in the field. Betting on very heavy
commitment to wind for carbon reduction is irrational and will result in the
inevitable failure of our climate change policy. Wind has a role, but this
role will be modest in scale."
A report by the House of Lords Economic Affairs Committee, published last
month, also cast doubt on the merits of wind turbines.
The committee, headed by Lord Vallance of Tummel, said the Government was
relying too heavily on wind to help it meet an EU target for the UK to
generate 15 per cent of its electricity from renewable sources by 2020. The
peers' report states: "An over-reliance on intermittent power generation, in
pursuit of the target, could prove both costly and risky."
Instead, the report favoured the expansion of nuclear power and the
development of carbon capture technology to allow "clean" coal fired power
stations.
Lord Vallance said: "The UK is most likely to adopt wind power as its main
means of producing more renewable electricity. This has an inherent weakness
in that it cannot be relied upon to generate electricity at the time it is
needed.
"Current policies would take the UK into uncharted territory, with a
dependence on intermittent supply unprecedented elsewhere in Europe. To guard
against power shortages, wind turbines would need to be backed up with
conventional generation.
"We are concerned that the dash to meet the EU's 2020 targets may draw
attention and investment away from cheaper and more reliable low-carbon
electricity generation - such as nuclear and potentially fossil fuels with
carbon capture and storage."
Ian Fells, emeritus professor of energy conversion at Newcastle University and
founding chairman of the New and Renewable Energy Centre, criticised the CCC
report as a wish list, lacking a basis in sound engineering principles.
"To say its ambitious is to put it mildly," said Professor Fells. "I just
don't see how it can be achieved."
He said that to meet the targets for the reduction in carbon emissions would
require an "extraordinary change in lifestyle" for most people.
Professor Fells said using wind power to generate electricity is almost twice
as expensive as coal or gas and could never be achieved without huge
taxpayers' subsidies. Instead, the professor said, the Government should give
the immediate go-ahead for the construction of the proposed Severn Barrage,
which could provide 5 per cent of Britain's electricity needs from regular,
uninterrupted tidal power.
"To emphasise offshore wind power as the mainstay of renewable energy is to
ignore the potential of marine technology and tidal stream systems," he said.
The CCC recommends a major programme of renewable energy production to replace
fossil fuels; increased energy efficiency at home and in the workplace; and
cutting transport emissions through the use of electric cars, biofuels and
more use of public transport.
Lord Turner, who was appointed to his post this year by Hilary Benn, the
environment secretary, said: "Climate change poses a grave threat to human
welfare, the environment and the economy. We need to act now, in the UK and as
part of a global agreement, to significantly reduce our emissions.
"The reductions required can be achieved at a very low cost to our economy.
The cost of not achieving the reductions will be far greater."
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