A new American Wind Energy Association report shows that in 2006, more than 2,400 megawatts of new power generation was installed in the U.S.. According to an association news release, that represents a $4 billion investment.

Texas leads the way with nearly 2,800 MW of wind energy production in the state. California is in second place with Iowa, Minnesota, and Washington state rounding out the top five:

“These wind power rankings tell the story of a vibrant industry that is growing fast, competing hard, gaining market share, and all the while powering a cleaner, stronger America,” said AWEA executive director Randall Swisher.

The AWEA report includes wind energy production by Congressional district. Association officials also point out a long-term extension of the renewable energy production tax credit is vital to continue the growth.