According to the American Wind Energy Association, the U.S. led the world in wind energy production in 2015. The U.S. produced 190 million megawatt-hours (MWh) from wind energy. That’s enough to power about 17.5 million typical U.S. homes.

Overall, wind energy accounted for 4.7 percent of the total electricity generated in U.S. in 2015.

The U.S. was followed by China, which produced 185.1 million MWh, while Germany came in third, producing 84.6 MWh. It should be noted that these rankings simply measured the total wind energy production for the year and did not take take into consideration the population and size of these countries, nor their energy consumption. The United States’ standing is impressive nonetheless, especially since China has nearly twice as much wind capacity installed.

Currently, the U.S. has nearly 75 gigawatts (GW) of wind power capacity installed with another 14.3 on the way. 9.4 GW of wind power were under construction at the beginning of 2016 and another 4.9 GW is in the late stages of development.

2015 was a milestone year in wind energy on the national level, as well. Wind energy supplied 31 percent of Iowa’s electricity, making it the first state ever to have more than 30 percent of its annual electricity supplied from the wind. Kansas and South Dakota hit the 20-percent mark; 8 states produced 15 percent or more and 20 states generated more than five percent.