More than 100 turbine blades owned by Scottish Power are to be taken out of service this spring to repair damage – ironically caused by wind power and sea-spray.
A total of 108 turbines in the company’s Duddon Sands wind-power farm need attention for ‘leading edge erosion problems’.
The 58.5-metre blades will be removed and stowed onboard a support boat in the Irish Sea while protective new rubber edges are attached.
Industry sources indicate that this work is expected to take between three and 10 days per turbine, depending on weather conditions, and the work may run into 2019.
Turbine manufacturer Siemens declined to comment on the cost of this remedial work.
A spokesman for West of Duddon Sands, the joint venture between Orsted and Scottish Power, said: “This is a planned maintenance programme. The work will not impact windfarm output in the short-term, and it will maximise performance in the long-term.
“The entire offshore wind industry has long been looking at leading edge erosion.
“Ultimately the harsh offshore environment can have the potential to impact the performance of wind turbine blades.
Meanwhile blade-tip extensions to be fitted to Siemens wind turbines at the Crystal Rig II site in the Borders are expected to boost electrical output by up to 10%.
A prototype tested at Fred.Olsen Renewables’ 138MW wind farm delivered a 7.85% boost in performance.
The 2.55m extensions are made of two shells of fibre-glass reinforced epoxy that are glued together and filled with epoxy foam before being fitted to the blade.
9 Feb 2018