Dive Summary:

• Wind power generated more than 10% of electricity in nine states in 2012, which is an increase from just five states in 2011.
• The number is expected to grow further in 2013, especially considering the new investments already being announced; all-told wind energy produced 3.5% of the nation's electricity last year.
• The leaders in wind generation were Iowa with 24.5% and South Dakota with 23.9%; North Dakota, Minnesota, Kansas, Colorado, Idaho, Oklahoma, and Oregon rounded out the nine 10+% states.

From the article:

The growth in wind energy in the U.S. can also be seen in its increasing role in the generation mix of individual states. Iowa and South Dakota reached generation levels greater than 20% throughout the entire year of 2012. In a total of 14 states, American wind energy provides 5% or more of generation.

Iowa was ranked first in wind generation, with 24.5% generation from wind energy. South Dakota was a close second with 23.9% generation from wind energy. North Dakota ranked third Minnesota closely followed, ranking fourth with over 14% wind energy generation. Kansas, which doubled its installation of wind power during 2012, jumped ahead to No. 5 position in wind generation, surpassing the 10% mark, reaching 11.4% generation from wind energy. ...