LONDON 21/03/11Whilst offshore wind is booming in many countries, offshore wind farms require additional capital investment due to more expensive marine foundations, integration in to the electrical network, and installation procedures in addition to limited access for O&M during operation.The new Offshore Wind Installations and Constructions Report published by Wind Energy Update has found that offshore wind farms being built further away from the shore, using larger and much heavier turbines has paved the way for new innovation in offshore wind.
Among the report’s findings are:
•Monopile foundations are being pushed to its structural limits in the Greater Gabbard project
•Experts interviewed for the report said that there are only 15 vessels available for the installation of cables in offshore wind farms, learn how the industry is coping with the shortage
•Offshore cabling generates 70% of insurance claims, even though it represents only 7% of the capital costs
•The cost of large scale offshore wind farms, currently at around £ 3m per MW, must come down by at least 15% to ensure the economic viability of offshore wind
“Understanding the most efficient ways to operate offshore wind farms is vital. Offshore wind farms require additional capital investment due to more expensive marine foundations, integration in to the electrical network, and installation procedures in addition to limited access for O&M during operation” said Alan Tricklebank, a wind industry expert and author of the report.
The new report, “The Offshore Wind Construction and Installation Report” published by Wind Energy Update, examines the best practice for marine foundations, installation vessels and cabling in offshore wind farms using case study analysis with innovative offshore wind farm developers; Greater Gabbard, Bard, Ormonde and Thornton Bank.
The report will be available to purchase from March 28 2011. Selected findings are available to download now at:http://www.windenergyupdate.com/offshorereport/preview.shtml
Offshore wind, which is rapidly evolving and scaling in response to harsh environments, makes repowering a complex decision, especially without energy policies and incentives set in place.
Dong Energy, the lead co-owner of The Walney Extension offshore wind farm, was granted consent for the project by the UK’s Secretary of State for Energy and Climate Change, paving the way for Dong’s financial decision making and the related supply chain to continue or win contracts.
Recent developments in the high-voltage direct current cabling market could make it easier to provide ancillary grid services using wind energy, says EC investigation.