Compare onshore and offshore wind: advantages, challenges, resource potential.

• A. Onshore is cheaper and closer to demand, but has land-use and local impacts; Offshore offers higher wind speeds and capacity but higher costs, maintenance, and transmission needs
• B. Offshore offers higher wind speeds but is cheaper to install
• C. Onshore wind has higher maintenance costs than offshore wind
• D. Offshore wind requires no transmission infrastructure

Answer: (A)

The main idea here is the tradeoff between cost, wind quality, and grid needs when choosing where to locate wind farms. Onshore wind is typically cheaper to build and easier to service, and it often sits closer to where people live and use electricity, which reduces transmission distance and losses. But it comes with land-use conflicts, local impacts on communities and wildlife, and often more variability in wind due to terrain and buildings nearby. Offshore wind, meanwhile, taps into stronger, steadier winds over the sea and can support larger turbines and higher overall output, giving a bigger resource potential. The drawbacks are substantial: far higher initial and ongoing costs, more challenging maintenance in a marine environment, and the need for substantial transmission infrastructure to bring the power ashore, usually via underwater cables and upgraded grid connections.

So the best summary is that onshore wind is cheaper and closer to demand but has land-use and local impacts; offshore wind offers higher wind speeds and capacity but comes with higher costs, maintenance challenges, and transmission needs. The other statements are incomplete or incorrect because they misstate cost or maintenance realities or ignore the transmission requirements offshore.