What are the main advantages and drawbacks of onshore wind turbines?

• A. Advantages: low emissions during operation. Drawbacks: wildlife concerns, intermittency.
• B. Advantages: high emissions during operation. Drawbacks: low upfront costs.
• C. Onshore wind has high capital costs and complex maintenance.
• D. Advantages: low operating costs, rapid deployment, low emissions; Drawbacks: visual/auditory impact, wildlife concerns, intermittency, site-specific wind resources.

Answer: (D)

Onshore wind energy sits at the intersection of strong economic practicality and clean energy, but with trade-offs tied to how the wind behaves and where turbines sit. The big advantages are low operating costs, rapid deployment, and low emissions during operation. Once a turbine is built, there’s no fuel to buy and only modest ongoing maintenance, which keeps the cost of electricity relatively low over time. Projects can be brought online relatively quickly compared with many other energy options, enabling rapid scaling to meet demand.

The low operational emissions are a major plus, since electricity is generated without burning fossil fuels on-site. Life-cycle emissions are still present in manufacturing, transportation, installation, and decommissioning, but they are generally much lower than those of fossil-fuel power plants and other carbon-intensive sources.

Drawbacks come from the nature of wind as a power source and the local environment. Visual and auditory impacts are common concerns, as turbines alter landscapes and can produce noise that affects nearby residents or communities. Wildlife concerns are important too, particularly for birds and bats that may collide with blades. The intermittency of wind means power output can swing with wind speed, so grid operators often need backup capacity or storage to maintain steady supply. Finally, wind resources vary by location, so some sites simply don’t produce much energy; this site-specific dependence can limit how effectively a project scales in a given area.

These combined factors—benefits of low operating costs and low emissions, contrasted with intermittency, environmental and social impacts, and site dependence—make the best-rounded description of onshore wind’s main advantages and drawbacks.