The massive 75m wind turbine blades (each the size of an Airbus A380) coming …

August 1, 2012 by  
Filed under Green Energy News

By
Eddie Wrenn

04:28 EST, 1 August 2012

|

04:45 EST, 1 August 2012

For the last few decades, we have been told wind power is going to be massive.

Now the manufacturing giant Siemens is taking this literally, by building the world’s largest turbines – with each blade measuring an astonishing 75 metres in length.

That means each of them is only a fraction shorter than the largest passenger plane ever built – the A380 Airbus, with a wingspan measuring 79.8 metres across.

Each of these blades is single piece of carbon fibre, and the turbines will eventually be mounted off the coast of Britain from 2014.

Giant turbine: The Siemans blade is the world's largest fiberglass component cast in one piece

Giant turbine: The Siemans blade is the world’s largest fiberglass component cast in one piece

Siemens
is working with partner DONG Energy to create the offshore turbines.

The pair agreed on July 19, 2012 to supply a total of 300 wind turbines with a capacity of 1,800
megawatts, which will be installed in wind power plants off the coast of Britain between 2014 and 2017.

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, which is about five miles off the Essex coast near the Thames estuary.

The 6MW wind turbines
are designed for large-scale projects, with the government targeting to produce 18 gigawatts of offshore
wind energy by 2020, which will equate to around 18 percent of the UK’s electricity
demand.

Scaling the heights of wind technology: An A380's wingpsan is only a fraction bigger than one blade

Scaling the heights of wind technology: An A380's wingpsan is only a fraction bigger than one blade

Scaling the heights of wind technology: An A380′s wingspan is only a fraction bigger than one blade

A special vehicle, traveling 60 kilometers per hour, transported these giants over a distance of 575 kilometers from the blade factory in Aalborg to the Danish town of Nakskov on Lolland Island

A special vehicle, traveling 60 kilometers per hour, transported these giants over a distance of 575 kilometers from the blade factory in Aalborg, Denmark, to the Danish town of Nakskov on Lolland Island

The rotor has a diameter of 154 meters and has a swept area of more than
18,600 square meters, which is equivalent to the area of approximately
two-and-a-half football fields. Siemens says the energy production of one 6MW turbine is
sufficient to supply about 6,000 European households with electricity.

Each blade is constructed from two
pieces of fibre carbon – making these the largest individual pieces of
fibre carbon constructions in the world.

In 1991, the two companies built the world’s first offshore wind
power plant Vindeby in Denmark. This has been followed by a total of 13
projects with 930 wind turbines.

The blades are built in a factory in Aalborg, Denmark.

Once constructed, a special lorry, traveling at 60 kilometers per hour, transports these giants over a distance of 575 kilometers from the factory the Danish town of Nakskov on Lolland Island.

By car, the trip is about 330 km, but because of the length of the rotor blade, some re-routing is necessary, taking bridges and tunnels into consideration.

In Nakskov the blades were painted – although some adaptions are needed as the painting cabin is currently limited to a 58m blade length.

Michael Suess, a boardmember for Siemens energy sector, said: ‘Offshore wind energy has huge
potential. Offshore wind conditions are strong
and stable, enabling an energy yield which can be about 40 percent higher
than onshore.

‘The United Kingdom, 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 levelised
costs for this environmentally-friendly form of power generation.’

These turbines will be installed in wind power plants off the British coast between 2014 and 2017

These turbines will be installed in wind power plants off the British coast between 2014 and 2017

Bigger than an Airbus: The A380 is a modern marvel of engineering as the world's biggest passenger plane

Bigger than an Airbus: The A380 is a modern marvel of engineering as the world’s biggest passenger plane

Workers inspect the mega-construction: The latest turbine generation from Siemens has a six megawatt capacity and 75 meter long rotor blades

Workers inspect the mega-construction: The latest turbine generation from Siemens has a six megawatt capacity and 75 meter long rotor blades

Here’s what other readers have said. Why not add your thoughts,
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The comments below have been moderated in advance.

California and Hawaii have plenty of derelict wind farms.. with14,000 rotting turbines, due to the service costs being the equivalent of building the things all over again. So..after their very short 20 year lifespan, for our green folly, who’s going to pay for the servicing?

and when it gets to windy at night they’ll have to be turned off like the ones off the coast of scotland had to be.

I heard this will kill small kittens. Is that true? This is a very cool project. We should open a factory here and employ everyone who can’t find a job at the moment. Surely the prospect of very cheap clean electricity to run our lives and new cars is definitely a good cause for the country to get behind and have some enthusiasm for the future. A bit like the Egyptians building the pyramids. Its also good for National security.

hmmm the ones along our waterfront are always being turned off when the wind gets up,, going to be interesting to see how much wind this will be able to cope with considering its size..

Its a shame we are not manufacturing in the UK considering this is for the UK market.
Don’t we have a company called NEG Micon Rotors based in the Isle of Wight (amongst other sites) that manufacture rotor blades?

Just WOW!

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