A government initiative calls for Britain to generate 20 percent of its power from renewable sources by 2020.
The blades windmill merrily above the treetops, lording it over the rural skyline like some freak botanical experiment.
Get closer and you can hear them humming quietly as they perform their modern-day alchemy: turning gusts of wind into electricity.
The sight of a 200-foot-tall turbine in the English countryside comes as a surprise. Just 79 wind farms dot the country, providing less than 1 percent of energy needs.
But that is about to change after the government signaled recently that it plans to revolutionize the energy-supply picture in Britain.
Hundreds of new wind turbines, both inland and offshore, are to be built in the coming years as part of a grand design to generate 20 percent of energy from so-called "renewable" supplies by 2020. This, it is hoped, will set Britain on the way to cutting carbon emissions far more radically than the Kyoto agreement calls for: Where Kyoto prescribed an 8 percent reduction by 2010, Blair now is aiming at a 60 percent cut by 2050 - and he wants the EU, including its newest members, to commit to the target as well.
As of 2000, Scandinavian countries led Europe in the use of renewable energy. Sweden, for example, relies on "green" energy sources for 32 percent of its power.
Britain's plan has raised hopes and eyebrows in equal measure. Environmentalists have naturally welcomed it, but criticized a lack of concrete policy proposals to help bring about the shift.
"It is frustrating that the government doesn't have the nerve to commit to formal targets for renewable energy and energy efficiency," says Alex Evans, a research fellow at the Institute for Public Policy Research think tank.
Economists say the move will increase energy costs to the British consumer because of the expense of new technology. The government says it would cost between 0.5 and 2 percent of the GDP in 2050 to achieve the 60 percent emissions goal.
For Prime Minister Tony Blair, however, the issue is bigger: Global warming caused by fossil fuels, he argues, is part of a cycle of degradation, poverty, and bitterness that makes the world a less secure place.
Tackling climate change is as important as tackling terrorism, he says, in an implicit challenge to the skeptical United States to get serious about cutting greenhouse gases.