US wind energy investments grew by 76% to $25bn in 2012, compared to $14.2bn in 2011, according to a new report published by the American Wind Energy Association (AWEA).
Wind projects accounted for 42% of all electric generating capacity in 2012, with more than 6,700 new wind turbines installed, bringing the country's total installation to about 45,100 turbines, enough to power 15.2 million homes.
There are now 15 states in the US which generate more than 1,000MW of wind power in the country.
Texas led the nation in terms of installed capacity last year, adding more than 1,800MW to a total of 12.2GW.
The report found that more than 550 factories across the US provide parts and services for the wind energy industry.
According to AWEA, wind power saved over 35 billion gallons of water in 2012 and also helped in avoiding more than 4% of carbon dioxide emissions in the power sector annually.
AWEA interim CEO Rob Gramlich said that 2012 was a productive year for the US.
"It really showed what this industry can do and the impact we can have with a continued national commitment to renewable energy," Gramlich added.
"We're doing what Americans overwhelmingly say they want: making more clean, renewable energy, and creating good jobs in US factories."
Earlier this year, a report from GTM Research predicted that smart grid expenditure for rural cooperative utilities in the US will reach $4.1bn in 2017.
Image: In 2012, wind projects accounted for 42% of all the electric generating capacity in US. Photo: Courtesy of FreeDigitalPhotos.net.