Abstract
Some of the latest developments in environmental methods for assessing wind turbine noise are discussed. HGC Engineering prepared a document for the Canadian Wind Energy Association (CanWEA), outlining best practices for the developers of wind farm projects and summarizing the assessment methodologies in the different areas in Canada. Some of the significant factors that are essential for wind turbine assessment, include factors which change with time, such as distance and site topography. Some of the latest developments in environmental assessment methodologies for wind turbines, include air absorption and ground absorption. The effect of variations in air temperature and humidity are considered by noise propagation models for wind turbines.