Tapping the Mighty Mississippi and Coastal Tides with Underwater Turbines


2011-02-18 Joey Peters, Scientific American, ClimateWire

Water Power

WATER POWER: New turbines may be able to capture the energy in tides and currents. Image: Courtesy Iowa Department of Transportation

The turbines work by capturing the energy of flowing water, which they pick up from waves, tides and currents

Experts at the Federal Energy Regulatory Commission are taking a cautious look at 123 applicants who want to generate renewable energy underwater, using a relatively untested technology.

The technology in question is called hydrokinetic. Like the turbines in dams, hydrokinetic turbines generate power from the movement of water. But these turbines don’t need dams and don’t present some of the challenges and expenses that come with them, explained Ed Lovelace, executive vice president of engineering at Free Flow Power, based in Gloucester, Mass.

The turbines work by capturing the energy of flowing water, which they pick up from waves, tides and currents. Because water has greater density than air and flows are more constant than wind, underwater turbines can deliver much more energy than wind turbines.

More (click here)

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2 Responses to Tapping the Mighty Mississippi and Coastal Tides with Underwater Turbines

  1. Alan Burke says:

    Perhaps we should consider doing something similar in the St. Lawrence, Yukon, Fraser, MacKenzie, Columbia and similar large-flow rivers.

  2. Pingback: Blue Pearl :-) » Tap The Tides Tides For Energy

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