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Wind Energy

Wind energy is harnessed by wind turbines, which convert the energy of the wind into electricity. Wind energy is one of the largest sources of renewable energy. Wind farms can now be found in more than 40 states.

The Basics

Wind energy is harnessed by wind turbines, which convert the energy of the wind into electricity. Wind energy is one of the largest sources of renewable energy.

Wind farms are most effective in areas with high and steady wind speeds, such as the central United States: Texas, Oklahoma, Kansas, and Iowa together produce around half of all the wind power in the country. Wind speed generally increases with height, which is why wind turbines tend to be very tall.

Wind speeds over the ocean tend to be faster and steadier than on land. As a result, some countries have developed offshore wind farms, which come with their own geoscientific and engineering challenges. The first offshore wind farm in the United States began producing electricity off the coast of Rhode Island in 2016.

Why does wind energy matter?

Wind energy is used to generate around 6% of the electricity in the United States. U.S. wind power capacity has doubled since 2011. Continued improvements in technology, combined with policy incentives, mean that the importance of wind as an energy source in the United States may continue to increase for many years to come. Building more wind farms requires metals and other materials to make wind turbines, including a large amount of neodymium, a rare earth element.

How does geoscience help inform decisions about wind energy development?

Geoscientists study wind speeds and patterns in the atmosphere to find the best locations for wind turbines. For both onshore and offshore wind farms, geoscientists provide information on the underlying soil and rock to help ensure that large turbines can be safely and securely installed while minimizing environmental impact. Geoscientists locate and extract the wide variety of mineral resources required by wind technologies, and help to minimize environmental damages associated with mining for these resources.

Learn More

Introductory Resources

  • Wind, Department of Energy
    Department of Energy homepage on wind energy, including a variety of information resources and summaries of ongoing projects

  • Offshore Wind Energy, Bureau of Ocean Energy Management
    Information on offshore wind energy, including its viability in the United States

  • Wind Explained, Energy Information Administration
    Introductory information on wind energy, how and where wind turbines work, types of wind turbines, the history of wind power, and environmental impacts

  • Wind Energy Education and Training Programs, Department of Energy
    Interactive map showing education and training programs for wind energy across the United States

Resources for Educators

Additional Resources

Energy

All of the energy we use comes from the Earth, its atmosphere, or the Sun. Some resources are mined or extracted, like coal, uranium, oil, and gas. Others, like wind, solar, tidal, biomass, and hydropower resources, are harnessed at the Earth’s surface. Geoscientists play an essential role in developing energy resources and evaluating their environmental impacts.

Geothermal Energy

Geothermal energy is harvested by drilling into underground reservoirs of steam or water heated by the Earth. While western states like California and Nevada lead the country in geothermal energy production, emerging technologies may make it possible to extract geothermal energy throughout the United States.

Hydraulic Fracturing

Hydraulic fracturing is a technique used in one step of the extraction of energy resources. Sometimes referred to as “fracking”, its wide application over the last decade has led to debate over its risks and benefits.

Hydropower

Hydropower uses the energy from moving water to power machines or generate electricity. Used for over two thousand years in water mills, today hydropower is more commonly associated with electricity generation.

Nuclear Energy

Nuclear energy is produced from fission, which splits the large atoms of heavy elements like uranium into smaller atoms, releasing enormous amounts of energy. Thirty U.S. states have nuclear power plants, and nuclear energy makes up around 20% of the U.S. electricity supply.

Oil and Gas

Petroleum (“oil”) and natural gas are hydrocarbons that formed over millions of years under heat and pressure deep in the Earth. Petroleum and natural gas are the largest sources of energy in the United States.

Renewable Energy

Renewable energy comes from sources that are constantly replenished, like running water, the heat of the Earth, the Sun’s light, or wind. Renewables account for around 11% of U.S. energy consumption and 17% of electricity production.

Solar Energy

Solar energy is energy from the Sun, which can be harnessed in several ways. Solar panels use the photovoltaic effect to generate electricity directly from sunlight. The Sun’s heat can be used directly to heat water or air, or it can be concentrated to boil water, driving steam turbines that generate electricity.