TEPCO surveys seabed to build offshore wind farm

Tokyo Electric Power Company Holdings Inc (TEPCO) has started surveying the seabed with the aim of verifying the possibility of realizing an offshore wind farm business off the coast of Choshi City, Chiba Prefecture.

For the next three months, TEPCO will carry out boring surveys off the coasts of Choshi City and Asahi City and surveys using sound waves off the coasts of Choshi, Asahi City, Sosa City and Yokoshibahikari-machi.

TEPCO said it will clarify soil structures through boring at two survey points from an SEP (self elevating platform) and survey geological nature by testing sampled materials in a laboratory. Also, it will check soil structures by measuring differences in sound waves emitted from a sound wave oscillation device on a moving ship.

Moreover, TEPCO will conduct a laboratory test after boring and sampling at four onshore points. Based on the results of offshore and onshore boring and sound wave surveys conducted on lines connecting the boring points, the company will check soil structures.

TEPCO started research off the coast of Choshi City in August 2009 as a project that New Energy and Industrial Technology Development Organization (NEDO) called for from the public. The company checked wind conditions and marine phenomena and surveyed the impacts of marine structures on the environment, etc.

TEPCO installed seabed-anchored offshore wind power generation facilities with a rated output of 2.4MW 3.1km off the coast (to the south) of Choshi City in cooperation with NEDO in January 2013. While experiencing operation and maintenance under severe weather and marine conditions, the company verified the safety and salt resistance of the facilities and confirmed that the sea area, where the sea is shallow and the wind velocity is high, is a promising candidate site for offshore wind power generation.

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