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Status and Feasibility Study on Tidal Energy Technology  

Cho, Young-Beom (Department of Environmental Engineering, The Catholic University of Korea)
Wee, Jung-Ho (Department of Environmental Engineering, The Catholic University of Korea)
Kim, Jeong-In (Department of Industrial Economics, Chung Ang University)
Publication Information
Journal of Energy Engineering / v.19, no.2, 2010 , pp. 103-115 More about this Journal
Abstract
Currently, many nations in the world make a strong effort to exploit the new and renewable energy. Tidal energy is the constant and regular power sources with higher and more stable quality compared to other renewable sources. The present paper reports the status of tidal energy analyzing its latest technology and development. In addition, a feasibility study on two types of tidal power plant(TPP) systems is conducted based on many assumptions, conditions and data involved in the Korea environment. The Sihwa and Uldolmok TPP are considered as the reference of tidal barrage(TB) and tidal in stream energy conversion(TISEC) type, respectively. While TB technology is currently mature and reliable, there still remain many environmental issues. Whereas, TISEC is recently received more attention due to its environmental friendly aspect. Therefore, the TISEC is believed to be very promising technology as the TPP. The unit electricity generation cost of Sihwa TPP is approximately 67.3 KRW/kWh. However, considering additional cost of Sihwa lake construction, it increases to 254 KRW/kWh. In Uldolmok, the unit electricity generation cost is calculated to be about 400 KRW/kWh, which is even higher than that of Sihwa TPP. This is ascribed to high cost of TISEC device and construction cost due to its technological infancy as well as relatively small power capacity. Nevertheless, the TISEC technology would be substantially developed in the future due to its many advantageous features.
Keywords
Renewable energy; Tidal energy; Tidal power plant; Sihwa; Uldolmok;
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