The greatest benefit of wind power is its contribution to reduction of carbon dioxide emissions from the power sector, which is the single largest anthropogenic contributor to the global climate change problem.

In 2015 annual reductions in CO2 from existing wind power plant is about 500 million tonnes. Under the Global Wind Energy Outlook moderate scenario, this is expected to rise to 1.1 billion tonnes annually by 2020 and up to 2.5 billion tonnes per year by 2030.

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