onshore electrical infrastructure. In July 2013 the government approved the plan for a wind farm of up to 288 turbines with up to 1200MW generating capacity, with associated meteorological masts, offshore substations, and connecting cabling, with wind turbines limited to tip height, rotor height, and rotor diameter. Additionally pile driving was not permitted during the Herring spawning season (September to mid October), without prior permission. In January 2014 the developer RWE announced that it had chosen to progress with a reduced plan of between 600 and 900 MW power, in order to reduce the cost (per MW) of the development. In February 2015 Statkraft acquired a 50% stake in the project. In late 2015 Statkraft announced it would no longer be investing in offshore wind, but would continue with the development at Triton Knoll. In April 2015 the developers submitted their planning application for the electrical power export system. HVAC was identified as the preferred method of electrical power export; HVDC and mixed HVDC/HVAC systems were considered but HVDC was rejected primarily on cost grounds, with the export cable length not sufficiently long to justify a HVDC system. Overhead lines were rejected on environmental impact grounds. A landfall at or near Anderby Creek was identified as likely, An intermediate electric compound (IEC) use to regulate the reactive power of the AC cables, and a preferred site was selected to the west of Skegness Stadium. A final substation site at or near Double Twelves Drove northwest of the Bicker Fen connection, and adjacent east of the South Forty Drain was shortlisted as the preferred option. Offshore and onshore export cables were to be energised at up to 220kV for a connection at Bicker Fen at 400kV. The proposed onshore cable route consisted of around of underground cable - a number of interested parties raised concerns about the cable route and windfarm: farmers and the NFU raised concerns about its effects on drainage; and Lincoln City Council claimed the development would have a negative effect on tourism; Lincolnshire County Council raised concerns about the combined environmental impact of the onshore link together with the 1.4 GW Viking Link electrical connector to Denmark. The electrical grid connection including onshore and offshore cabling was given planning permission in September 2016. The wind farm was estimated in 2015 to represent a total investment of £3-4 billion. With the scaling back of capacity and falling installation