Renewable Energy
Fig. 1. Transporting the world’s longest rotor blade, at 75 metres, is not only technically or logistically challenging but requires a vehicle 85 metres long, five metres wide and four metres high.
Wind turbine efficiency grows in line with demand
Investment continues to grow in wind power generation as new and more efficient technologies are emerging. Sean Ottewell reports.
Las inversiones continúan creciendo en la generación de energía eólica al mismo ritmo que la aparición de nuevas tecnologías más eficientes. Informa Sean Ottewell.
Die Investitionen in die Stromerzeugung aus Windkraft wachsen, während neue und leistungsfähigere Technologien entwickelt werden. Sean Ottewell berichtet.
S
iemens and DONG Energy continue their successful co-operation in offshore wind with a framework agreement for the supply of 300 wind turbines with a capacity of
1800MW. Te agreement is based on the new SWT-6.0-154 direct drive wind turbine that will be installed in wind power plants off the British coast between 2014 and 2017. Te world’s largest rotor blade measuring
75 metres in length, equalling a total rotor diameter of 154 metres, will be deployed (Fig. 1). “Offshore wind energy has huge potential,”
said Michael Suess, member of the managing board at Siemens and ceo of the energy sector. “Offshore wind conditions are strong and stable, enabling an energy yield which can be about 40 per cent higher than onshore. Te UK, Denmark and Germany in particular are counting on the future of offshore wind energy.
We are pleased that our long-term customer DONG Energy has chosen the latest generation of our wind turbines. Together we are working to further reduce the costs for this environmentally- friendly form of power generation.” DONG Energy has already announced that it will install two of the new 6MW wind turbines later this year for testing at Gunfleet Sands offshore wind farm. Te 6MW wind turbines are designed for large-scale projects, including the Round 3 projects in the UK. Te target for 2020 in the UK is 18 GW of offshore wind energy, which equates to around 18 per cent of the country’s electricity demand. Te energy production of Siemens’ 6MW
wind turbine is sufficient to supply about 6000 European households with electricity. Te rotor has a diameter of 154 metres and has a swept area of more than 18,600m2
to the area of approximately two and a half
www.engineerlive.com 37
, which is equivalent
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