November 2, 2004 Photo |
"China's economy is booming and requires many new
power resources to keep its momentum going."
- Tidal Electric Chairman Peter Ullman
The Chinese government signed an agreement with UK-based
Tidal Electric for a renewable energy tidal power project near the mouth of the
Yalu river. At 300 MW, the project would be the largest tidal power project in
the world, according to the developers, topping the capacity of the 240 MW
French tidal power plant in LaRance.
Tidal Electric's offshore tidal power generation, also called "tidal
lagoons," is a new approach to tidal power conversion which the company
says resolves the environmental and economic problems of the familiar
"tidal barrage" technology. Although it has been in use for more than
1000 years, Tidal Electric says the tidal barrage is unsuitable for broad-scale
commercial use because of environmental and economic drawbacks due, primarily,
to its shoreline location.
Instead, Tidal Electric's tidal lagoons use a rubble mound impoundment structure
and low-head hydroelectric generating equipment situated a mile or more offshore
in a high tidal range area. Shallow tidal flats provide the most economical
sites. Multi-cell impoundment structures provide higher load factors (about 62
percent) and have the flexibility to shape the output curve in order to dispatch
power in response to demand price signals.
The tides are highly predictable and permit tidal power to fit comfortably into
existing electricity distribution grids. Tidal Electric also wrote a computer
simulation program that uses equipment performance characteristics and tidal
data to create a detailed simulation of generation output, water flows and
storage, and is used for design optimization.
Governor Zhang Wenyue of Liaoning Province (population 50.2 million) traveled to
New York City for the signing ceremony accompanied by four Mayors from cities
nearby the chosen site, provincial consenting authorities, foreign trade
officials, and a contingent of foreign affairs specialists.
Tidal Electric was represented by Chairman Peter Ullman, Director Gregory
Bonenberger, and Michael Ashburn, a British citizen living in Beijing who heads
up Tidal Electric's affiliate company Tai Yang Dian Li ("Clear
World"). Detailed discussion of specific aspects of the agreement were held
at the Yale Club in New York and included Mayor Chen of Dandong City and a
contingent of other local officials who pledged their support and agreed to
provide Tidal Electric with environmental data, tidal data, and liaison
services.
"China's economy is booming and requires many new power resources to keep
its momentum going," Ullman said. "The Chinese government has clearly
stated their support for renewable power. They demonstrated that by bringing top
scientists and engineers together to carefully consider the tidal lagoon
technology and ask all the hard questions. They are now satisfied the technology
is credible."
Next steps for the project are to conduct engineering feasibility studies
similar to those that were recently successfully concluded in the UK by WS
Atkins Engineering for Tidal Electric's Swansea Bay project.
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