www.next100.com/
Jan 29 2009
California's renewable energy outlook caught a rising tide today as the California Public Utilities Commission approved $4.8 million in funding for a major program to develop and demonstrate emerging wave power technology. The study, called WaveConnect, will be led by PG&E off the coast of Mendocino and Humboldt counties. The program will receive an additional $1.2 million from the Department of Energy.
PG&E's first step will be to conduct meetings with local stakeholders and agencies to learn about their issues and concerns. After completing appropriate environmental reviews and permit applications, which could take a couple of years, PG&E then plans to build an undersea infrastructure, including power transmission cables, to support wave energy demonstration projects. The utility will then invite manufacturers of wave energy devices to install them offshore for testing and comparison.
Ultimately, the demonstration will help promising technology companies find funding and guide PG&E (and other utilities) in choosing which wave power developers to partner with.
There are many different approaches to choose from. Some systems take their power from surface waves, others from pressure changes below the surface. Some bob up and down with the waves, others let waves wash over them. Some even rest on the sea floor. WaveConnect will help sort out the technology whales from the minnows.
"The anticipated cost of wave power compares favorably to the early days of solar and wind," says William Toman, a renewable energy project manager at PG&E. "It will take several stages of design evolution to lower costs and increase reliability." Last October, the CPUC rejected a 15-year contract signed by PG&E to purchase 2 MWs of wave power from Finavera Renewables.
The commission said the power was too expensive and the technology too experimental for prime time. (Finavera has since refocused on the development of wind energy in Canada and Ireland.) But many experts believe wave power remains a highly promising new source of energy for California. Our 745-mile coastline could produce more than a fifth of the state's energy needs if--admittedly a big if--economic, environmental, land use and grid connection issues don't stand in the way, according to the California Energy Commission.
Making ocean power technology work reliably and at a competitive price will be the first big challenge. Serving offshore installations with power transmission lines will be another economic and engineering hurdle. Finally, ocean power developers must also convince local communities and government regulators that their installations will not destroy marine life, cause boating collisions or navigational hazards, or degrade ocean views.
Link: www.next100.com/
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