The project was being developed by Crest Energy, with an ultimate size of 200MW at a cost of $600 million.

Crest Energy planned to place up to 200 turbines at least 30 metres deep along a ten kilometre stretch of the main channel.

The output of the turbines would cycle twice daily with the predictable rise and fall of the tide.

[2] Uncertainty in the power market was blamed for the demise of the project by Anthony Hopkins, founding director of Crest Energy.

It narrows to a width of 6 kilometres (3.7 mi),[4] and is over 50 metres (160 ft) deep in parts.