Massive wind turbines with almost 100m blades will cut the cost of offshore wind energy by at least 38% in seven years, according to a Danish company. Dong Energy, the world’s largest developer and operator of offshore wind farms, aims to cut the cost of wind energy in the North Sea to less than €100 ($130) per MWh by 2020 compared with €160 ($209) last year.
The company, owned by the Danish state, drills for and produces oil and natural gas, and operates conventional power plants in Europe, says it can achieve this cost reduction for offshore wind in the U.K. sector of the North Sea. “It’s very challenging, but we think it’s very much a realistic and achievable target,” said Benj Sykes, wind power director for the United Kingdom at Dong. “The cost-of-energy target requires governments to ensure transparent planning, consenting and support regimes up to 2020 and beyond. This will ensure investment certainty, continuous build-out rates and project flow, which will in turn secure maturation of supply chain and technical innovation and investments.”
Dong’s target is actually more ambitious than that of the U.K. government, which wants developers to cut the cost of offshore wind to £100 ($152) per MWh by 2020. It still wouldn’t be as cheap as onshore wind, which currently costs about $85 per MWh, while coal costs $82 and natural gas costs $71. The company aims to achieve its target in the United Kingdom, where it is involved in every aspect of offshore wind, from turbines, array cables, offshore substations and export cables to onshore substations before the power goes to the national transmission grid. At its offshore wind farms in Germany and Denmark, the company is in charge only of the turbines, cables and offshore substations, so it has less scope to control the total cost of energy.
To get to €100 per MWh, Dong plans to radically increase the size of the offshore turbines it will install, from 3 to 4 megawatts currently to 8 to 10 MW in 2016 through 2020. Such turbines don’t even exist yet.
Filed Under: Construction, News, Offshore wind
Shamil Ayntrazi says
The Coordinated Offshore Energy Extraction, Floating Wind Turbine Foundations and Bridges (COEE & FB) extract offshore renewable energy; Wave, Tidal, Wind and Solar. The COEE construction unit is a building block for offshore wind farms, wind turbine floating foundations and Floating Bridges.
The Floating Bridge provides Floating Foundations support for offshore wind turbine farms and support for electric power and control cables to the shoreline and for maintenance.
The Floating Bridge is used for access to oil/gas rigs and for support of oil/gas pipelines, electric power and control cables to the shoreline.
The Floating Bridge provides access to and between islands, across rivers, at reservoirs behind dams, for offshore wind turbine farms; for transport, installation and maintenance.
The system accepts standard wind turbines as provided by others. The wind turbine support being modified to fix to the floating wind turbine structure.
a. A coee construction unit measuring 16.5×12.5 meters can provide energy output per year per meter of sea front in excess of the following depending on sea and wind states:
i. Wave energy 45,503 KW-H
ii. Tidal energy 6,636 KW-H
iii. Solar Energy, 200 sqm 10,910 KW-H
Total per meter sea front 63,089 KW-H
Wind Turbine Rating Output KW-H Total KW-H
a. 0.75 MW W. Turbine 31,250 KW-H 94,339
b. 1 MW W. Turbine 28,571 KW-H 91,660
c. 3 MW W. Turbine 64,286 KW-H 127,375
d. 7 MW W. Turbine 123,529 KW-H 186,618
e. 10 MW W. Turbine 142,587 KW-H 205,675
b. For a sale price of 10 US cents per KW-H would provide a minimum rate of return on capital investment – ROI way above 12% excluding government incentives, tax breaks and bridge toll where the floating bridge is used for vehicular transport.
It is worth for Clients and Consultants to request an Alternate Bid based on the Coordinated Offshore Energy Extraction and Floating Wind Turbine Foundations and Bridges. This way they will have a real estimate and an estimate of KW-Hours produced per year.
The COEE and FB system does not require R&D neither Prototype testing. The engineering calculations can be easily developed and verified, and all equipment are available on the market with proven performance records.
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