The primary factor to consider when selecting a site for a wind farm is the wind resource, as the wind speed and consistency determine the amount of energy that can be generated.

Grid is not a common type of wind turbine layout. In-line, staggered, and clustered are the most commonly used layouts.

The minimum distance between two wind turbines in a wind farm is typically 4 rotor diameters to avoid wake effects and maximize energy production.

The primary environmental impact of wind farms is noise pollution, as the turbines generate noise when they operate.

Wind farms typically have high maintenance costs due to the complex nature of the turbines and the need for regular maintenance.

The typical capacity factor of a wind farm is around 30-40%, meaning that the wind farm generates 30-40% of its rated capacity on average.

Generator efficiency is not a factor that affects the efficiency of a wind turbine. Wind speed, air density, and blade design are the primary factors that influence turbine efficiency.

The primary purpose of a wind farm control system is to optimize energy production by adjusting the pitch of the turbine blades and the yaw angle to maximize power output.

Floating foundations are not commonly used for wind turbines, as they are typically used for offshore wind turbines in deep waters.

The typical lifespan of a wind turbine is around 20-25 years, after which it may need to be replaced or refurbished.

Darrieus wind turbines are not as common as horizontal axis wind turbines or vertical axis wind turbines.

The primary challenge associated with integrating wind energy into the electric grid is intermittency, as wind power is variable and unpredictable.

Expert opinion is not a common method for forecasting wind power generation, as it is not as accurate as numerical weather prediction models, statistical models, or machine learning algorithms.

The primary purpose of a wind farm operations and maintenance (O&M) plan is to ensure the safe and efficient operation of the wind farm.

Environmental monitoring systems are not typically used for wind farms, as they are more commonly used for other types of industrial facilities.