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.
There are a number of wind power projects in the state of Maine, totaling more than 900 megawatts (MW) in capacity. In 2020 they were responsible for 24% of in-state electricity production. In 2019, Maine had more wind capacity than the other five New England states combined, at 923 MW.
Wyoming has one of the highest wind power potentials of any state in the United States. In 2019, Wyoming had wind powered electricity generating capacity of 1,589 MW, which produced 9.85% of its electric generation, with an additional 3,753 MW under construction. However, the wind generation in that year was Wyoming's third-lowest in the 2010s. By 2020, wind capacity increased to 2738 MW and 8448 gigawatt-hours of electricity were produced from wind in 2021, more than double 2019 production. Additional wind capacity and needed transmission lines are under construction or planned, despite political headwinds from Wyoming's strong coal and oil sectors.
New York has 2,192 MW of installed wind power capacity as of 2022. Most of New York's wind power is located in upstate New York as onshore wind farms. New York has set a goal of developing 9,000 MW of offshore installed wind power capacity by 2035 that will power an estimated 6 million homes. As of October 2022, New York has five offshore wind farms in development with approximately 4,300 MW installed capacity.
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.
In 2021, Wind power in Vermont consisted of five utility-scale wind farms with a total capacity of 149 megawatts (MW). They were responsible for one-sixth of in-state electricity generation in 2019.
The Highland Wind Energy Center is a 501.4 megawatt (MW) wind farm in O'Brien County, Iowa. It became the largest facility in the state when it was placed online in 2015.
The U.S. state of Massachusetts has vast wind energy resources offshore, as well as significant resources onshore. The 2016 update to the states's Clean Energy and Climate Plan had a goal of reducing 1990 baseline greenhouse gas emissions levels by 25% by 2020. Current goals include installing 3,500 megawatts (MW) of offshore wind power in the state by 2035. However, as of Q4 2021 the state had only 120 MW of wind powered electricity generating capacity, responsible for generating 0.9% of in-state electricity production. The state has awarded contracts to two offshore projects, the 800 MW Vineyard Wind project and 804 MW Mayflower Wind project. Construction began on the Vineyard Wind 1 project on November 18, 2021, after a long fight for approval. Commonwealth Wind was selected for development in 2021, but the developer has attempted to cancel the project due to increased costs. There are eight projects planned for off the southern coast of Massachusetts, though some will deliver power to Rhode Island, Connecticut, and New York.
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.
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.
The U.S. Department of Energy has determined that West Virginia has significant wind power development opportunities, with a potential of 69 gigawatts. As of the start of 2020, there were 376 wind turbines in operation in West Virginia with a generating capacity of 686 megawatts (MW) and responsible for 2.7% of in-state electricity production. An additional 56 MW was under construction.
Wind power in Kentucky has limited potential for development within the state since there are generally low wind speeds, though there are specific locations where it can be effective. The state has not passed renewable portfolio standard legislation and there are no commercial-scale wind turbines. Kentucky may benefit from the development of wind power in Tennessee, an adjoining state with which it is collaborating, and from efforts by the Tennessee Valley Authority to both develop and import wind-generated electricity into the region.
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 Nebraska remains largely untapped in comparison with its potential. In the Great Plains, with more than 47,000 farms and open skies it ranks near the top in the United States in its ability to generate energy from wind. As of 2015, the state had not adopted a renewable portfolio standard. Omaha Public Power District (OPPD) is one of the state's largest purchasers of wind energy.
The California Ridge Wind Farm is a 134-turbine wind farm in eastern Champaign County and western Vermilion County in the U.S. state of Illinois. The project was developed by Invenergy, an energy holding company.
