The existing wind farm currently has 30 turbines with a maximum capacity of 90MW. The proposed extension would add up to 51MW of generating capacity. The zone that Vattenfall is considering to develop the extension in is more than 7km from shore and covers nearly 8sq km.
The application is the first wind farm application to be received by the IPC, which is responsible for determining all wind turbine projects in England and Wales over 50MW in capacity. A number of other wind farm projects are at pre-application phase.
The IPC has until 12 November 2011 to decide whether to accept the application.
Meanwhile, energy firm Covanta Energy has withdrawn its application to the IPC to build a 65MW energy-from-waste incinerator on the outskirts of Merthyr Tydfil, south Wales.