OFFSHORE WIND: Placing turbines in deep waters offshore could provide a bonanza of power while keeping turbines out of sight--if technical hurdles can be overcome.
©Hans Laubel/istockphoto.com

The waters of the Jersey Shore may soon become home to the nation's first deepwater wind turbines. New Jersey officials recently announced the state would help fund an initiative by Garden State Offshore Energy to build a 350-megawatt wind farm 16 miles (26 kilometers) offshore. The state wants by 2020 many more of these parks, at least 3,000 megawatts worth, or about 13 percent of the state's total electricity needs.

"This is probably the first of many ambitious goals to be set by states," says Greg Watson, a senior advisor on clean energy technology to the governor of Massachusetts. "Three thousand megawatts is significant. With that you're able to offset or even prevent fossil fuel plants from being built."

The federal government is about to open up to wind energy development vast swaths of deep ocean waters, and states and wind park developers are vying to be the first to seize the new frontier. Wind parks in these waters can generate more energy than nearshore and onshore sites, they don't ruin seascape views, and they don't interfere as much with other ocean activities.

New Jersey's plan was prompted, in part, by new federal rules that will greatly expand the territory in which developers can build offshore wind parks. Until now, such projects were only allowed in shallow state waters—those within 3.5 miles (5.6 kilometers) of shore. The new rules would allow them in federal waters, known as the outer continental shelf, which extend to the edge of U.S. territory about 230 miles (200 nautical miles, or 370 kilometers) out. These are the same waters where the hotly debated oil and gas drilling has been proposed, but the sites are unlikely to overlap, say wind developers.

The U.S. Department of the Interior's Minerals Management Service, the federal agency with jurisdiction, plans to finalize the rules by the end of the year. The agency says it will lease plots of the shelf to developers of wind parks and other renewable energy projects, such as ocean current and wave-harvesting technologies. States are chipping in on wind park development projects in the hope that the energy from these complexes will feed into state grids and help meet renewable energy requirements.

Some groups say the rules leave too many barriers for developers to overcome. "Are these waters really open?" asks Sean O'Neill, founder of the Ocean Renewable Energy Coalition. O'Neill says the leases may be prohibitively expensive and the environmental review process too extensive.

Which way the wind blows
But opening up the shelf may be the only way a viable offshore wind industry can develop in this country. Wind projects in state waters are visible from shore and can interfere with shipping routes and recreation. Turbines often have to be smaller and fewer to minimize these impacts, leading to less profitable projects. And prior to the new federal rules, no one knew who was in charge.

These obstacles have delayed, and in some cases nixed, many projects—and so far, not a single offshore wind turbine is operating in the U.S. Organizers of Cape Wind, an offshore wind park to be built more than five miles (eight kilometers) from Cape Cod, Mass., have been battling public opposition and regulatory hurdles for more than seven years.

Leasing the outer continental shelf may solve some of these problems and open a tremendous energy resource. Researchers at the National Renewable Energy Laboratory (NREL) in Golden, Colo., estimate that the wind in this territory could generate nearly 1000 gigawatts—a little more than the current U.S. electrical capacity.