Walney Wind Farm
| Walney Wind Farm | |
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Walney Wind Farm under construction in 2011
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 Location of Walney Wind Farm in England
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| Country | England, United Kingdom |
| Location | 14km west of Walney Island off the coast of Cumbria |
| Coordinates | 54°02′38″N 3°31′19″W / 54.044°N 3.522°WCoordinates: 54°02′38″N 3°31′19″W / 54.044°N 3.522°W |
| Status | Operational |
| Construction began | March 2010 |
| Commission date | February 2012 |
| Wind farm | |
| Type | Offshore |
| Site area | 73 km2 (28 sq mi) |
| Distance from shore | 15 km (9 mi) |
| Rotor diameter | 120 m |
| Power generation | |
| Units operational | 102 × 3.6 MW |
| Make and model | Siemens Wind Power: SWT-3.6 |
| Nameplate capacity | 367 MW |
| Capacity factor | 43% |
| Annual gross output | ~ 1,300 |
Walney Wind Farm is an offshore wind farm 14 km west of Walney Island off the coast of Cumbria, in the Irish Sea, England. It has a capacity of 367 MW, which makes it one of the world's largest offshore wind farms. The wind farm was developed by Walney (UK) Offshore Windfarms Limited, a partnership between DONG Energy and Scottish and Southern Energy. The farm is immediately north west of the West of Duddon Sands Wind Farm and also to the west of Ormonde Wind Farm. The farm is in water depths ranging from 19m to 23m and covers an area of approximately 73 km2.
Both phases have 51 turbines giving a nameplate capacity of 367 MW. Until September 2012 it was the world's largest operational offshore wind farm. It is expected to generate about 1,300 GW·h/year of electricity, with a load factor of 43%.
In 2004 DONG Energy was awarded a 50-year lease from The Crown Estate to develop a wind farm off Walney Island, as part of the second UK offshore wind farm tendering process known as "Round 2". The farm was constructed sequentially in two phases with overlapping installation activities to reduce the overall construction timeframe.
The project involved constructing the wind turbines and their foundations, building two offshore substations and installing two undersea power cables, one for each phase, and two short onshore cables to connect to two existing onshore Electrical substations for connection into the UK National Grid. A cable was laid by Stemat Spirit. Phase 1 connects to a substation at Heysham and Phase 2 connects to substation at Stanah, south of Fleetwood. Both undersea cables pass close by Barrow Wind Farm. All the construction work was expected to take less than 2 years, with both phases operational by the end of 2011. On 11 July 2011 Phase 1 became operational, comprising 51 turbines with an installed capacity of 183.6MW.
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