Excerpts from Environmental Leader, April 10, 2009
US Department of the Interior Secretary Ken Salazar told participants at a summit meeting “that U.S. offshore areas hold enormous potential for wind energy development in all coastal metropolitan centers, and the wind potential off the coasts of the lower 48 states could exceed electricity demand in the U.S.
The National Renewable Energy Lab (NREL) has identified more than 1,000 gigawatts (GW) of wind potential off the Atlantic coast, and more than 900 GW of wind potential off the Pacific Coast. There are more than 2,000 MW of offshore wind projects proposed in the United States, according to the Department of Interior.
The total wind potential for the Atlantic region is 1024 gigawatts (GW), and 1 GW of wind power will supply between 225,000 to 300,000 average U.S. homes with power annually, according to U.S. Geological Survey-Minerals Management Service Report.
New Jersey is tripling the amount of wind power it plans to use by 2020 to 3,000 megawatts, or 13% of New Jersey’s total energy, according to AP. In Atlantic City alone, the local utilities authority has a wind farm consisting of five windmills that generate 7.5 megawatts, enough energy to power approximately 2,500 homes, according to the article.
The biggest potential wind power is located out in deep waters (see chart above) — 770.9 GW in the Atlantic, 891.4 GW in the Pacific and 67 GW in the Gulf, according to NREL. The laboratory assumes that about 40% of wind potential, or 185 GW, could be developed, to power about 53.3 million average U.S. homes.
But some believe Salazar’s estimates are too optimistic.
Mark Rodgers, a spokesman for Cape Wind, pushing to build a wind farm off Cape Cod, Mass., told the Associated Press that it would take hundreds of thousands of windmills with the average wind turbine generating between 2 to 5 megawatts per unit.