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Tuesday, 3 February 2009
Page: 110


Mr Tuckey asked the Minister for the Environment, Heritage and the Arts, in writing, on 22 October 2008:

(1)   What are the mean tidal movements along the Kimberley coastline.

(2)   What international evidence exists of successful tidal electrical generation.


Mr Garrett (Minister for the Environment, Heritage and the Arts) —The answer to the honourable member’s question is as follows:

(1)   The term “tidal movements” can refer to both currents due to tides, and to vertical tide motions. In either case, the mean tidal movement is zero averaged over a tidal cycle. The tidal range, being the difference between low tide and high tide, along the Kimberley coast is from 10.5 metres at Derby in King Sound to 11.6 metres at Shale Island in Collier Bay.

(2)   The Department of Resources, Energy and Tourism has advised that it is aware of only one large scale tidal barrage energy plant currently operating in the world, in La Rance in France.