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Kaipara Tidal Power Station
The Kaipara tidal power station is a proposed tidal power project to be located in the Kaipara Harbour. The project is being developed by Crest Energy, with an ultimate size of 200MW at a cost of $600 million.〔(【引用サイトリンク】title=Kaipara tidal power )〕
Crest plans to place the turbines at least 30 metres deep along a ten kilometre stretch of the main channel. Historical charts show this stretch of the channel has changed little over 150 years. The output of the turbines will cycle twice daily with the predictable rise and fall of the tide. Each turbine will have a maximum output of 1.2 MW, and is expected to generate 0.75 MW averaged over time.〔
In 2013, it was announced that the project had been put on hold, and most of the shares in Crest Energy had been sold to Todd Energy.
==Kaipara Harbour==
The entrance to Kaipara Harbour, one of the largest harbours in the world, is a channel to the Tasman Sea. It narrows to a width of ,〔Haggit T, Mead S, and Bellingham M (2008) (''Kaipara Harbour Environmental Information Review'' ) ARC Technical Publication TP 354〕 and is over deep in parts. On average, Kaipara tides rise and fall . At high tide, nearly 1000 square kilometres are flooded. Spring tidal flows reach 9 km/h (5 knots) in the entrance channel and move 1,990 million cubic meters per tidal movement or 7,960 million cubic meters daily.〔Bellve, AR; Austin, G and Woods, B (2007) (Pathway to energy generation from marine tidal currents in New Zealand's Kaipara Harbour ) University of Auckland〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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