Wind power
Wind power is a âform of energy conversion in which turbines convert the kinetic energy of wind into mechanical or electrical energy that can be used for power,â according to Noelle Eckley Selin of the Massachusetts Institute of Technology. Wind is considered an alternative or renewable energy. [1]
As Selin notes,
Historically, wind power in the form of windmills has been used for centuries for such tasks as grinding grain and pumping water. One of the earliest known wind turbines for electricity generation was built in Scotland in 1887, and remarkable development of the technology took place throughout the 20th century. [1]
According to the Global Energy Monitor, there were 17,169 operating wind farms (collections of wind turbines) worldwide as of February 2025. An additional 8,592 prospective wind farms were in various stages of development, from announcement to construction. China had the most wind farms, with 5,406 in operation and 2,858 prospective farmsâsignificantly more than Germany, which was in second place with 2,073 wind farms in operation and 199 prospective farms. China also had the highest operating wind farm capacity (the maximum amount of power, in megawatts or gigawatts, that a wind farm can generate), with 44 percent of the global total. The United States, which had 1,166 operating farms and 215 prospective farms, was second in operating capacity at 15 percent. [2]
Of the 162 countries analyzed by the Global Energy Monitor, only 56 had zero wind farms; of those, only 12 had no plans on record to build wind farms. [2]
However, globally, there were 2,233 wind farm projects that had been âshelved,â âmothballed,â retired, or canceled as of February 2025. The United Kingdom had the most of these at 523, followed by the United States with 294âreasons range from lack of federal funding to economic downturn to loss of local interest in wind farm development. [2]
Pros and Cons at a Glance
| PROS | CONS |
|---|---|
| Pro 1: Wind power is cheaper than fossil fuel energies. Read More. | Con 1: Wind power is unreliable. Read More. |
| Pro 2: Wind power is clean. Read More. | Con 2: Wind power is too limited, in use and location. Read More. |
| Pro 3: Wind power is safe and getting safer. Read More. | Con 3: Wind power can harm the environment. Read More. |
Pro Arguments
(Go to Con Arguments)Pro 1: Wind power is cheaper than fossil fuel energies.
Wind power is often cheaper than fossil fuel-based energies, because its energy source is free and renewable. Plus, its operating costs have dropped considerably because of new technology. [8]
As Evergreen Action notes,
Utility-scale solar and onshore wind are still the most cost-effective form[s] of energy in most cases, especially when compared to new-build gas and coal. The cost of building new gas-fired power plants, meanwhile, has hit a 10-year high. [3]
According to a June 2025 financial analysis, onshore wind energy and storage costs less than natural gas, nuclear power, and even solar power. [4]
As the U.S. Department of Energy reports: âLand-based, utility-scale wind turbines provide one of the lowest-priced energy sources available today. Furthermore, wind energyâs cost competitiveness continues to improve with advances in the science and technology of wind energy.â [8]
Pro 2: Wind power is clean.
While the construction of wind turbines releases more greenhouse gases than building a coal or gas power plant, turbines are virtually emission-free once in operation, a claim fossil fuel plants cannot make. [5]
As Forbes journalist Christopher Helman reports, âWind power has a carbon footprint 99% less than coal-fired power plants, 98% less than natural gas, and a surprise 75% less than solar.â [6]
As explained by the U.S. Energy Information Administration,
Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling. Wind turbines may also reduce electricity generation from fossil fuels, which results in lower total air pollution and carbon dioxide emissions. [15]
Pro 3: Wind power is safe and getting safer.
When wind turbines are planned and installed, the environment is carefully considered to protect ecosystems. True, itâs estimated that more than a million birds are killed annually by wind turbines in the United States, but many more birds are killed by domestic cats and from flying into windows and buildings. In fact, as the Yale School of the Environment reports,
[Analysts are] researching bird behavior near turbines and devising and testing new technologies to keep birds safe. Some potential solutions are simple, like painting turbine blades in contrasting colors. Others are complex and expensive, like using cameras with A.I. technology to shut turbines down when birds approach. [7]
Also, despite frequent claims to the contrary by opponents of wind energy, there is no proof that offshore wind farms are killing whales. The noise disturbances from building the farms are limited and much less damaging than the consistent, long-term noise of oil rigs. Offshore wind farms can even act as artificial reefs and hunting grounds for animals such as seals, offering them environmental benefits. As journalist Sophie Hardach explains,
Research tracking seals suggests that they now use wind farms as hunting grounds to forage for fish gathering around the turbines, for example, with one sealâs tracks showing how the animal made its way through the farm and stopped at different turbines to snack. [10] [17] [18]
Additionally, catastrophic blade failuresâin which blades detach and fly dangerously through the airâare exceptionally rare, especially with the advanced safety features of new turbines. [21]
Con Arguments
(Go to Pro Arguments)Con 1: Wind power is unreliable.
Simply put, wind turbines donât produce energy when the wind doesnât blow.
For example, during the summer and early fall of 2021, Europe experienced dry conditions and low wind speeds that reduced wind and hydroelectric power production. In the United Kingdom and Ireland these conditions lowered output from a major renewable energy supplier by 32 percent. German and Danish energy companies noted similar decreases in energy production. The lack of wind sent energy costs soaring. [20]
Climate change is likely the culprit behind this âglobal stillingâ of wind speeds, which could decrease further by 8â10 percent in Europe. As climate risk analyst Hannah Bloomfield reports,
This can be explained by the cold Arctic warming at a faster rate than equatorial regions, which means there is less difference in temperature between hot and cold areas. This temperature difference is what drives large-scale winds around the globe...the recent wind drought is a clear reminder of how variable this form of [energy] generation can be. [12]
Con 2: Wind power is too limited, in use and location.
Wind power is heavily subsidized by the government to keep costs low, but what the public gets in return for that investment is much too limited. As energy researcher Austin Gae writes, wind energy is not only an intermittent source of energy (producing no energy when the wind doesnât blow), but it âlacks the versatility of natural gas and oil. While natural gas and oil are integral to a wide range of applications including electricity generation, heating and transportation, wind energy is confined to only electricity generation.â [11]
Moreover, wind turbines can only be situated in certain geographical areas, where there is reliable, strong wind. Unfortunately, as Ana Almerini of SolarReviews explains, many of these places
tend to be in remote areas far outside of cities and towns, in more rural areas or offshore. Because of this distance, new infrastructure, such as power lines, has to be built in order to connect a wind farm to the power grid [which] can be costly and may cause some harm to the surrounding environment (i.e. by tearing down trees to make way for power lines). [13]
Con 3: Wind power can harm the environment.
Most scientists agree that much more research is needed for a full understanding of wind powerâs impact on the environment. As the U.S. Department of Energy reports, âIn some circumstances, wind energy projects can negatively impact the surrounding environment...birds and bats, as well as marine mammals and other marine life in the case of offshore wind energy, are of high concern.â [16]
Although scientists have not tied whale deaths to offshore wind turbines (contrary to popular belief), turbines âcould potentially disrupt [the whalesâ] behavioural patterns such as migration, breathing, nursing, breeding, feeding or sheltering,â and the increased ship traffic associated with wind farm construction and maintenance could increase the risk of ship strikes on whales, according to Business Norway. The noise of the turbines and turbine construction may have similar negative effects. [17] [18]
Perhaps most concerning is that the magnets in turbines require assorted rare earth elements, and the mining for these is notorious for the âpollution of land, water, and air, spread of toxic wastes, water depletion, deforestation, biodiversity loss, and social disruption,â reports journalist RenĂ©e Cho. [14]
Finally, turbine bladesâsome of which are longer than a football fieldâare nearly impossible to recycle. Consequently, they are piling up in landfills called âwind turbine graveyards,â further aggravating the U.S.âs garbage problem. [19]
Assessment quiz
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Discussion questions
- Is wind power a good source of energy? Why or why not?
- Compare wind power to nuclear power and geothermal power. Which do you think is best?
- Compare the environmental benefits of wind power to its environmental consequences. Which of the two is more significant?
- What questions do you have after reading the debate above? Where might you find answers?
- What was the most interesting thing you learned from this debate?
- Consider how you felt about the issue before reading this article. After reading the pros and cons on this topic, has your thinking changed? How and why?. If your thoughts have not changed, explain how and why you better understand the other side of the debate.
- Push for the position and policies you support by writing local officials, U.S. senators and representatives, or other people in a position to make the change you champion.
Sources
- Noelle Eckley Selin, âWind Powerâ (October 12, 2025), britannica.com
- Global Energy Monitor, âGlobal Wind Power Tracker: Summary Tablesâ (February 2025), globalenergymonitor.org
- Evergreen Action, âClean Energy Is Still the Cheapest Energy. States Must Deploy It, Fast.â (July 31, 2025), evergreenaction.com
- Lazard, âLevelized Cost of Energy+: June 2025â (June 2025), lazard.com
- Rahul Rao, âWind Turbines and Solar Panels Are Lower-Emissions Than Fossil Fuels Overallâ (November 28, 2024), science.feedback.org
- Christopher Helman, âHow Green Is Wind Power, Really? A New Report Tallies Up the Carbon Cost of Renewablesâ (April 14, 2022), forbes.com
- Adam Welz, âBirds vs. Wind Turbines: New Research Aims to Prevent Deathsâ (June 4, 2025), e360.yale.edu
- U.S. Department of Energy, âAdvantages and Challenges of Wind Energyâ (accessed November 12, 2025), energy.gov
- University of Maryland Center for Environmental Science, âWind Energy & Environmental Impactsâ (accessed November 6, 2025), umces.edu
- Sophie Hardach, âWhich Is Worse for Wildlife, Wind Farms or Oil Drilling?â (January 30, 2025), bbc.com
- Austin Gae, âWind Turbines: Not Green, Not Reliableâ (August 2, 2024), heritage.org
- Hannah Bloomfield, âWhat Europeâs Exceptionally Low Winds Mean for the Future Energy Gridâ (October 21, 2021), theconversation.com
- Ana Almerini, âWind Energy Pros and Consâ (accessed November 6, 2025), solarreviews.com
- RenĂ©e Cho, âThe Energy Transition Will Need More Rare Earth Elements. Can We Secure Them Sustainably?â (April 5, 2023), news.climate.columbia.edu
- U.S. Energy Information Administration, âWind Explainedâ (December 27, 2022), eia.gov
- U.S. Department of Energy, âWind Energyâs Potential Effects on Wildlife and the Environmentâ (accessed November 12, 2025), windexchange.energy.gov
- Business Norway, âHow Do Offshore Wind Turbines Affect Whales and Fishing?â (November 17, 2025), businessnorway.com
- Y. Teff-Seker et al., âNoise Pollution From Wind Turbines and Its Effects on Wildlife: A Cross-National Analysis of Current Policies and Planning Regulations,â Renewable and Sustainable Energy Reviews (October 2022), sciencedirect.com
- Minho Kim, âTurbine Blades Have Piled Up in Landfills. A Solution May Be Coming.â (September 3, 2024), nytimes.com
- Pippa Stevens, âUK Energy Titan SSE Says Low Wind, Driest Conditions in 70 Years Hit Renewable Generationâ (September 29, 2021), cnbc.com
- Rahul Rao, âNo, Wind Turbines Are Not Likely to Fall on Your Head, and There Is No Evidence That Wind Is More Dangerous Than Other Energy Sourcesâ (September 6, 2024), science.feedback.org
- Scientific American, âAre Aesthetics a Good Reason Not to Be a Fan of Wind Power?â (December 10, 2009), scientificamerican.com
- U.S. Energy Information Administration, âU.S. Energy Facts Explainedâ (accessed January 13, 2025), eia.gov
- U.S. Energy Information Administration, âMonthly Energy Reviewâ (September 2025), eia.gov

