Stationary Energy

Wind

Over the past 30 years the cost of wind power has declined to about 4 to 6 cents per kilowatt-hour. Investments in technology have increased in recent years due in part to the federal production tax credit for renewable energy. The growth of wind power will be significantly impacted by environmental and other obstacles.

• Consumption:  In 2004, wind power accounted for .0143% of total energy consumption in the U.S. Major concerns about wind power involve safety, economic efficiency, and the environmental impact of wind farms.

• Supply:  In 2005, United States' total wind energy capacity was 9,149 MW. This is equivalent to powering 2.3 million average American households. By July 2006, the Nation's wind energy capacity reached 10,000 MW. Industry experts predict U.S. wind energy capacity to continue its growth.

• Environmental Concerns:  Concerns over placement of wind turbines in bird migration paths and bat flight paths have brought attention to the potential negative environmental effects of wind power. The most visible conflict between environmentalists and the wind industry is in the planned off-shore wind farm by Cape Wind Associates in Nantucket Sound. Recently, the Energy Policy Act required the Minerals Management Service to prepare an environmental impact statement, as well as consider alternatives to the Cape Wind proposal.

• Radar Interference:  In addition to the environmental impact, there is a concern that tall wind turbines may create false signals that would be picked up by military and civilian radar. The FY 2006 Defense Authorization Act required a DOD report to Congress on the effects of wind farms on military readiness, including the operation of military radar installations, and how technology could mitigate the adverse effects. Until risks to military and commercial air flight can be assessed, many wind farm projects have been stopped.