Growing concerns over the climate crisis have prompted many to seek out environmentally friendly ways of living. Wind energy is one of our fastest-growing, environmentally friendly resources that can combat climate change and maintain a sustainable planet for future generations. So, we had to ask: How environmentally friendly is wind energy? 

Overall, wind energy is considered to be environmentally friendly energy. It generates a fraction of the greenhouse gasses and pollution as fossil fuels and can have a minimal impact on the land. Environmentally friendly energy sources have minimal, negative impacts on the environment as a whole.

Keep reading to learn how environmentally friendly wind energy is throughout its life cycle, what its carbon footprint is, what role it plays in combating climate change, and how safe or dangerous it is.

Here’s How Environmentally Friendly Wind Energy Is

Wind energy is defined as the conversion of moving air into electrical energy through the use of wind turbines. 

“Wind: a current of air moving approximately horizontally, especially one strong enough to be felt”

Cambridge Dictionary

Wind energy has become one of our most advanced and widespread renewable energy technologies. Environmentally friendly energy sources do just as the word implies, they have minimal, negative impacts on the environment.

“Environmentally friendly: (of products) not harming the environment.”

Cambridge Dictionary

Given the worsening climate crisis, environmentally friendly energy sources have come to represent larger shares of the overall energy market.

To understand how environmentally friendly wind energy is, we must assess its life cycle and each stage’s carbon footprint. This life-cycle assessment (LCA) is a method to evaluate the environmental impacts of products and materials. Over the years, companies have strategically used LCA to research and create more sustainable products. So, let’s have a look at the LCA of wind energy!

How Environmentally Friendly Is Wind Energy Overall

Overall, wind energy is considered to be environmentally friendly. It generates a fraction of the greenhouse gas emissions as fossil fuels, emits zero sulfur dioxide or nitrogen oxide emissions, and has a minimal impact on the land provided that proper siting, monitoring, maintenance, and disposal of wind farms occurs.

How Environmentally Friendly Is the Building of Wind Energy

The building stage of wind energy involves constructing wind turbines and electricity delivery mechanisms. 

Clearing the land for the construction of wind farms can disturb natural habitats and degrade the land if proper precautionary measures are not followed. 

Although wind farms require large amounts of land, the turbines themselves do not take up large amounts of land. Because turbines must be spaced far apart from each other, the land in between them can be used for other purposes, including agriculture. This can minimize the environmental impact.

How Environmentally Friendly Is the Operating and Maintaining of Wind Energy

The operating and maintaining stage of wind energy includes the process by which wind farms capture wind and convert it into electricity. 

Wind energy produces a fraction of the pollution and toxic chemicals that fossil fuels produce, making the operating phase very environmentally friendly. Rather than combusting toxic materials, wind energy facilities harness the energy of the sun to generate electricity. In terms of emissions, onshore wind energy generates 11 and offshore wind energy generates 12 grams of CO₂ equivalent per kWh of electricity produced and zero sulfur dioxide or nitrogen oxide emissions. 

During wind energy site construction, the increased presence of people, traffic, and noises can disrupt grouse and other ground-nesting birds. In addition, spinning turbine blades can prove to be a hazard for birds and bats. However, studies found relatively low hazard rates at most modern wind energy developments.

Negative wildlife interactions can be mitigated by:

• Monitoring the site for animal presence
• Stopping or slowing turbine blades when animals are present or expected to be present
• Deploying deterrent technologies to discourage wildlife from approaching spinning turbine blades 

How Environmentally Friendly Is the Building Back of Wind Energy

Building back wind energy involves utilizing construction equipment to decommission wind turbines and restoring the land to its original form. 

Wind turbines themselves have an average life expectancy of 30 years. The foundation and towers typically follow this timeline, but smaller parts such as gearboxes, blades, and generators are usually replaced sooner. 

Recycling end-of-life wind turbines can reduce their impact on the environment. The technology to recycle wind turbines does exist, but the practice is not currently in widespread use. Just in 2022, Carbon Rivers, a US-based company, commercialized a process to reclaim glass fibers from decommissioned wind turbine blades. Because turbine blades are typically 50% glass or carbon fiber composite by weight, recycling them can significantly reduce their environmental impact.

What Is the Carbon Footprint of Wind Energy

The carbon footprint is one of the ways we measure the effects of human-induced global climate change. It primarily focuses on the greenhouse gas (GHG) emissions associated with consumption and includes other emissions such as methane (CH₄), nitrous oxide, and chlorofluorocarbons (CFCs).

“Carbon footprint: the amount of greenhouse gasses and specifically carbon dioxide emitted by something (such as a person’s activities or a product’s manufacture and transport) during a given period”

Merriam Webster

Although wind energy emits zero to no GHG emissions upon operation, there are emissions associated with other stages of its life cycle including manufacturing, transportation, installation, maintenance, decommissioning, and dismantlement of materials.

On a life-cycle basis, onshore wind energy emits 11 and offshore wind energy emits 12 grams of CO₂ equivalent per kWh of electricity produced, the joint-lowest out of all fuel types. 

Have a look at the illustration below to see the average life-cycle CO₂ equivalent emissions of different energy sources and how they compare to wind energy.

What Role Does Wind Energy Play in Combating Climate Change

Climate change is arguably the most severe, long-term, global impact of fossil fuel combustion. Every year, approximately 37 billion tons of CO₂ are emitted from burning fossil fuels. The carbon found in fossil fuels reacts with oxygen in the air to produce CO₂. This warms the earth by acting as a heating blanket, and a warmer earth comes with a host of negative side effects. 

Using wind energy instead of fossil fuel energy helps mitigate the following negative effects of climate change:

• Increasing temperatures: Earth’s atmosphere has warmed 1.5℃ since 1880. This may not seem like a lot, but these degrees create regional and seasonal temperature extremes, reduce sea ice, intensify rainfall and drought severity, and change habitat ranges for plants and animals.

• Rising sea levels: Global sea levels have increased approximately 8-9 inches since 1880, displacing people living along coastlines and destroying coastal habitats. Roads, bridges, subways, water supplies, oil and gas wells, power plants, sewage treatment plants, and landfills remain at risk if sea level rise goes unchecked. 

• Melting of sea ice: Since 1979, arctic sea ice has declined by 30%. Sea ice plays a major role in regulating the earth’s climate by reflecting sunlight into space and providing habitat for animal species. If all of the glaciers on Earth melted, sea levels would rise by approximately 70 feet, effectively flooding out every coastal city on the planet. 

• Changing precipitation patterns: Extreme weather events (e.g., hurricanes, floods, droughts) are becoming more common and more intense. Storm-affected areas will experience increased precipitation and flooding whereas areas located further from storm tracks will experience decreased precipitation and droughts.

• Ocean acidification: The ocean absorbs 30% of the CO₂ released into the atmosphere, which decreases the pH (increases the acidity) of the ocean. In the past 200 years, the pH of oceans has decreased by 0.1 pH units, which translates to a 30% increase in acidity. Aquatic life unable to adjust to this rapid acidification will die off. A prime example of this is coral bleaching, where coral expels the algae (zooxanthellae) living in their tissues as a result of changes in temperature, light, or nutrients. 

The more we reduce CO₂ emissions, the more we slow the rate of temperature rise, sea-level rise, ice melting, and ocean acidification. When these rates are slowed, the earth’s biodiversity does not have to struggle to adapt to temperature and pH changes. People will not be displaced due to the flooding of coastal areas. And icebergs will continue to provide climate regulation. 

To help keep global temperature rise below 1.5C, as outlined in the Paris Agreement, we must shift at least 80% of our electricity generation to low-carbon sources. Over 120 countries have already stated their net-zero carbon emissions ambitions for 2050 or 2060. But only 12 countries have thus far proposed or enacted any legislation, indicating that there is more work to be done.

How Clean Is Wind Energy

Overall, wind energy is considered to be clean energy. 

“Clean energy: energy, as electricity or nuclear power, that does not pollute the atmosphere when used, as opposed to coal and oil”

Collins Dictionary

Wind energy produces virtually no greenhouse gasses or any other kind of environmental pollution upon its operation.

How Sustainable Is Wind Energy

Overall, wind energy is considered to be sustainable energy.

“Sustainable: The ability to be maintained at a certain rate or level | Avoidance of the depletion of natural resources in order to maintain an ecological balance”

Oxford Dictionary

Wind energy meets the needs of our current generation without compromising the ability of future generations to meet their own needs.

How Renewable Is Wind Energy

Overall, wind energy is considered to be renewable energy.

“Renewable Energy: energy that is produced using the sun, wind, etc., or from crops, rather than using fuels such as oil or coal | types of energy that can be replaced naturally such as energy produced from wind or water”

Cambridge Dictionary

Wind energy is flow-limited, naturally replenishing, virtually inexhaustible, and limited in the amount of energy available in a set amount of time. 

How Green Is Wind Energy

Overall, wind energy is considered to be green energy.

“Green Energy: energy that can be produced in a way that protects the natural environment, for example by using wind, water, or the sun”

Cambridge Dictionary

Wind energy has a low to zero-emissions profile and carbon footprint reductions that provide the highest environmental benefits.

How Safe or Dangerous Is Wind Energy

Overall, wind energy is not considered to be dangerous. Holistically and throughout its life cycle, wind is safe and beneficial for human and animal health, the environment, and the energy grid. It is also significantly safer than fossil fuels and other types of renewable energy.

Here’s How Safe Wind Energy Is

Overall, wind energy is a safe form of energy regarding human and animal health, the environment, the energy grid, and throughout all stages of its life cycle.

Here’s How Dangerous Wind Energy Is

Overall, wind energy is considered minimally dangerous in terms of human and animal health, the environment, the energy grid, and through all stages of its life cycle. 

Final Thoughts

Overall, wind energy is considered to be environmentally friendly because it generates a fraction of the greenhouse gas emissions as fossil fuels, emits zero sulfur dioxide or nitrogen oxide, and can have a minimal impact on the land provided that proper siting, monitoring, and maintenance of wind farms occurs.

Environmentally friendly energy is poised to see continued growth in the future as we look to reduce greenhouse gas emissions and mitigate global warming. As we look towards a future powered by renewables, wind energy is predicted to continue increasing in capacity because it benefits both our atmosphere and Earth’s biota. 

Stay impactful,

Sources

• US Department of Energy: How Do Wind Turbines Work?
• Cambridge English Dictionary: Environmentally Friendly definition
• Impactful Ninja: How Does Wind Energy Work? From Source Til Energy Generation
• Science Direct: Life-cycle assessment (LCA)
• MIT SMR: Strategic Sustainability Uses of Life-Cycle Analysis
• Union of Concerned Scientists: Environmental Impacts of Wind Power
• World Nuclear Association: Carbon Dioxide Emissions From Electricity
• US Fish & Wildlife Service: Wind Energy
• WINDExchange: Wind Energy’s Potential Effects on Wildlife and the Environment
• WINDExchange: End of Service Wind Turbine Guide
• National Grid: Can wind turbine blades be recycled?
• US Department of Energy: Carbon Rivers Makes Wind Turbine Blade Recycling and Upcycling a Reality With Support From DOE
• Britannica: Carbon footprint | Definition, Examples, Calculation, Effects, & Facts
• World Nuclear Association: Carbon Dioxide Emissions From Electricity
• World Nuclear Association: Average life-cycle CO2 equivalent emissions
• Impactful Ninja: What Is the Carbon Footprint of Wind Energy? A Life-Cycle Assessment
• The National Wildlife Federation: Climate Change
• National Oceanic and Atmospheric Administration: Climate Change – Global Temperature
• National Oceanic and Atmospheric Administration: Climate Change – Global Sea Level
• United States Geological Survey: How would sea level change if all glaciers melted?
• National Aeronautics and Space Administration, U.S.A.: How does climate change affect precipitation?
• National Oceanic and Atmospheric Administration: Ocean Acidification
• National Ocean Service: What is coral bleaching?
• United Nations Framework Convention on Climate Change: The Paris Agreement
• International Energy Agency: Oil 2021
• Impactful Ninja: How Clean Is Wind Energy? A Life-Cycle Assessment
• Impactful Ninja: How Sustainable Is Wind Energy? A Life-Cycle Assessment
• Impactful Ninja: How Renewable Is Wind Energy? A Life-Cycle Assessment
• Impactful Ninja: How Green Is Wind Energy? A Life-Cycle Assessment
• Impactful Ninja: How Safe Is Wind Energy? A Holistic Life-Cycle Analysis
• Impactful Ninja: How Dangerous Is Wind Energy? A Holistic Life-Cycle Analysis
• WINDExchange: Wind Turbine Sound
• Union of Concerned Scientists: Environmental Impacts of Wind Power
• US Department of Energy: How Wind Energy Became Integral to the Modern Grid
• US Department of Energy: How Do Wind Turbines Survive Severe Storms?
• Occupational Safety and Health Administration: Green Job Hazards – Wind Energy
• Our World in Data: What are the safest and cleanest sources of energy?