A wind farm or wind park, also called a wind power station or wind power plant, is a group of wind turbines in the same location used to produce electricity. Wind farms vary in size from a small number of turbines to several hundred wind turbines covering an extensive area. Wind farms can be either onshore or offshore.
Wind power in California had initiative and early development during Governor Jerry Brown's first two terms in the late 1970s and early 1980s. The state's wind power capacity has grown by nearly 350% since 2001, when it was less than 1,700 MW. In 2016, wind energy supplied about 6.9% of California's total electricity needs, or enough to power more than 1.3 million households. Most of California's wind generation is found in the Tehachapi area of Kern County, California, with some large projects in Solano, Contra Costa and Riverside counties as well. California is among the states with the largest amount of installed wind power capacity. In recent years, California has lagged behind other states when it comes to the installation of wind power. It was ranked 4th overall for wind power electrical generation at the end of 2016 behind Texas, Iowa, and Oklahoma. As of 2019, California had 5,973 megawatts (MW) of wind power generating capacity installed.
Making up over 62% of the state's generated electricity in 2022, wind power is the largest source of electricity generation in Iowa. In 2020, over 34 billion kWh of electrical energy was generated by wind power. As of 2022, Iowa has over 12,200 megawatts (MW) of installed capacity with over 6,000 wind turbines, ranking 2nd and 3rd in the nation below Texas respectively.
The U.S. state of Oregon has large wind energy resources. Many projects have been completed, most of them in rural Eastern Oregon and near the Columbia River Gorge. Wind power accounted for 12.1% of the electricity generated in Oregon in 2016.
At the end of 2015, the installed capacity of wind power in Washington was 3,075 megawatts (MW) with wind power accounting for 7,101 GWh. In 2016, it reached a generation of 8,041 GWh, comprising 7.1% of the electricity generated in the state. In 2019, it had a capacity of 3,085 MW, responsible for 7.33% of generation.
At the end of 2016, the installed capacity for wind power in Minnesota was 3,500 megawatts (MW). Wind power generated nearly 18 percent of Minnesota’s electricity in 2016, ranking sixth in the nation for wind energy as a share of total electricity generation.
Wind power in Illinois provided nearly 10% of the state's generated electrical power in 2020 powering 1,231,900 homes. At the end of 2020, Illinois had 6,300 megawatts (MW) of wind power installed, ranking fifth among states for installed wind turbine capacity. An additional 1,100 MW of wind power was under construction across the state at the end of 2020.
Wind power in Montana is a growing industry. Montana had over 695 MW of wind generation capability by 2016, responsible for 7.6% of in-state electricity generation.
Wind power in Indiana was limited to a few small water-pumping windmills on farms until 2008 with construction of Indiana's first utility-scale wind power facility, Goodland with a nameplate capacity of 130 MW. As of September 2017, Indiana had a total of 1897 MW of wind power capacity installed, ranking it 12th among U.S. states. Wind power was responsible for 4.8% of in-state electricity production in 2016.
In 2016, Arizona had 268 megawatts (MW) of wind powered electricity generating capacity, producing 0.5% of in-state generated electricity.
The US state of Colorado has vast wind energy resources and the installed electricity capacity and generation from wind power in Colorado has been growing significantly in recent years. The growth has been sustained due to a combination of falling costs, continuing federal incentives, and the state's aggressive renewable portfolio standard that requires 30% of the state's electricity to come from renewable sources by 2020.
Wind power in Michigan is a developing industry. The industrial base from the automotive industry has led to a number of companies producing wind turbine parts in the state. The development of wind farms in the state, however, has lagged behind. In January 2021, there were a total of 1,481 wind turbines in the state with a nameplate capacity of 2,549 MW. The nameplate total exceeded 2,000 MW when Pine River came online in March 2019. Wind provided 4.2% of the state's electricity in 2016.
The state of South Dakota is a leader in the U.S. in wind power generation with over 30% of the state's electricity generation coming from wind in 2017. In 2016, South Dakota had 583 turbines with a total capacity of 977 megawatts (MW) of wind generation capacity. In 2019, the capacity increased to 1525 MW.
The U.S. State of Oklahoma has high potential capacity for wind power in the western half of the state. In 2021, Oklahoma's installed wind generation capacity was almost 10,500 megawatts, supplying over 40% of the state's generated electricity and 85% of Oklahoma's total generating capacity from all renewable resources.
Wind power in Hawaii has the potential to provide all of the electricity generation in the electricity sector in Hawaii. The 132 commercial wind turbines in the state have a total capacity of 236 MW. In 2015, wind turbines produced 6.4% of Hawaii's electricity. In 2012, Hawaii generated 367 million kWh from wind power.
Wind power in Rhode Island is in the early stages of development. There are several small scale wind turbine projects in the state. As of December 2013 there were 11 turbines at 10 sites in the state. In 2014, Rhode Island had 9 MW of installed wind power capacity, which quickly rose to 75 MW in 2019.
Wind power in Tennessee has most potential in East Tennessee along the North Carolina border. The state has not passed renewable portfolio standard legislation and there is just one utility-scale wind farm with 15 operating turbines and previously 3 test turbines. The Tennessee Valley Authority (TVA), based in Knoxville, imports wind-generated electricity into its service area which includes Tennessee. US Senator Lamar Alexander from Tennessee is an outspoken critic of wind power.
Wind power in Arkansas remains nearly untapped, with just a single wind turbine in the state. Arkansas does not have a renewable portfolio standard. Studies have concluded that while Arkansas is generally considered to have low wind resources, there are significant pockets of it throughout the state.
Wind power in Missouri has an installed capacity of 959 MW from 499 turbines, as of 2016. This provided 1.29% of the state's electricity production.
The Grande Prairie Wind Farm is a 400 megawatt (MW) wind farm spanning northeastern Holt County in the U.S. state of Nebraska. It increased wind generating capacity in the state by 50% to become the largest such facility upon its completion in late 2016. It is owned and operated by Berkshire Hathaway Energy and the power is being sold to the Omaha Public Power District (OPPD) under a 20-year power purchase agreement (PPA).
