08 Dec '11, 4pm

Wind Power Produces Just 4-14% Emissions of Fossil Fuels, Even With Manufacturing & Decommissioning

Wind Power Produces Just 4-14% Emissions of Fossil Fuels, Even With Manufacturing & Decommissioning

It's tempting to think that wind power is entirely free of greenhouse gas emissions , but energy has to be used to make, assemble, maintain and ultimately decommission turbines and wind power projects. Even given all that though, a new assessment of the environmental impact of wind power, published in Environmental Research Letters , shows that wind power is a huge improvement over fossil fuel power plants it replaces. Assuming a 20-year lifecycle for onshore wind farms, and a 25-year timeframe for offshore projects, the paper concludes, the total emissions of wind electricity range between 4% and 14% of the direct emissions of the replaced fossil-fueled power plants. For all impact categories, the indirect emissions of displaced fossil power are larger than the total emissions caused by wind power. The paper's authors note that these figures are in high range of other ana...

Full article: http://www.treehugger.com/renewable-energy/wind-power-emi...

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