TOEFL Integrated Writing

📖 Reading Passage

The construction of large-scale wind farms has been proposed as a key solution to reduce reliance on fossil fuels. However, a closer examination reveals that wind energy may not be as environmentally friendly or economically viable as often claimed. Three major concerns undermine its widespread adoption. First, wind turbines pose a significant threat to bird and bat populations. Studies have shown that turbine blades cause thousands of fatalities annually, particularly among migratory species. This disrupts ecosystems and contradicts the goal of protecting biodiversity. Second, wind power is intermittent and unreliable. Because wind speeds vary, turbines generate electricity only 30-40% of the time. This requires backup from fossil fuel plants, which defeats the purpose of reducing carbon emissions. Finally, the economic costs are prohibitive. Building and maintaining wind farms require substantial investment, and government subsidies often distort market prices. Without subsidies, wind energy cannot compete with cheaper natural gas or coal, making it an impractical choice for many regions.

🎧 Listening Lecture

The lecture challenges the reading's claims. While bird collisions are a concern, the professor points out that properly sited wind farms—away from major migratory routes—can reduce fatalities dramatically. Moreover, the number of birds killed by wind turbines is minuscule compared to those killed by domestic cats, building windows, and vehicles. The professor also dismisses the intermittency argument by highlighting advances in energy storage. Modern battery systems can store excess power generated during windy periods and release it when winds are calm. This technology is rapidly improving and becoming cost-effective, making wind power more reliable than ever. Finally, the professor argues that the economic analysis is misleading. The cost of wind energy has fallen by more than 70% over the past decade, and when factoring in the health and environmental costs of fossil fuels—such as air pollution and climate change—wind is actually cheaper. Subsidies are temporary and are also given to fossil fuels, so they are not a unique disadvantage. Thus, the reading's criticisms are outdated and overlook current innovations.