DOE Office of Energy Efficiency and Renewable Energy programme manager Jose Zayas presented preliminary figures on the department's vision for wind energy across the US at the AWEA Windpower 2014 conference in Las Vegas.
Zayas said 10% of US electricity from wind power is achievable by 2020 and 20% by 2030.
The 2020 figure is reduced from last year's figure of 20%. Zayas said that a contributory factor was that electricity demand has fallen. The 2050 scenario would include offshore wind.
More details on the DOE vision scenario are expected this week, and the report will be peer-reviewed over the summer before being published.
According to Zayas, the cost to the taxpayer will be up to 1% on taxes until 2030, when the figures start to drop, showing a 3% saving on taxes by 2050 because of decarbonisation and cost-effective technology, based on EIA figures.