This important peer-reviewed paper written by bat expert Dr. Thomas H. Kunz et al identifies the significant risk wind turbines pose for migratory and local bat populations in the mid-Atlantic Highlands region of the United States. The projected number of annual fatalities of bats at wind energy facilities in the Highlands in the year 2020 can reach up to 111,000 bats.

Capacity Factor by Month: (1) Mountaineer Windplant, WV, (2) Meyersdale Windplant, PA, (3) Mill Run Windplant, PA, and (4) Waymart Windplant, PA.
This information, by month, highlights the issue of whether wind is available when electricity is needed. The charts reflect strong winds in the winter months and considerably lighter winds in the summer when demand for electricity is expected to peak.