This video shows the construction of the Coega wind farm.
ALE was involved in the handling and transportation of all major components for the Coega wind farm in Oyster Bay, Eastern Cape, South Africa.
This included the handling and transportation of 32 N100 R80 wind turbine generators, consisting of three blades, a nacelle, hub, drive trains and four tower sections, along with the associated equipment, all varying in weight and dimensions.
Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electrical power.Wind energy is the kinetic energy of air in motion, also called wind.Large wind farms consist of hundreds of individual wind turbines which are connected to the electric power transmission network.
Europe accounted for 48% of the world total wind power generation capacity in 2009. In 2010, Spain became Europe’s leading producer of wind energy, achieving 42,976 GWh. Germany held the top spot in Europe in terms of installed capacity.
In 2010, more than half of all new wind power was added outside of the traditional markets in Europe and North America. This was largely from new construction in China, which accounted for nearly half the new wind installations (16.5 GW).
Compared to the environmental impact of traditional energy sources, the environmental impact of wind power is relatively minor in terms of pollution. Wind power consumes no fuel, and emits no air pollution, unlike fossil fuel power sources. The energy consumed to manufacture and transport the materials used to build a wind power plant is equal to the new energy produced by the plant within a few months. While a wind farm may cover a large area of land, many land uses such as agriculture are compatible, with only small areas of turbine foundations and infrastructure made unavailable for use.
The world’s largest offshore wind farm
London Array is the largest offshore wind farm currently in existence (as of 2014). Our contribution to this mega-project was design, fabrication and installation of the foundations, as well as transport and installation of the turbines. The 175 wind power generators, with a 630 MW capacity, are situated in the Thames estuary, roughly 20 km off the coast of Kent and Essex. The project is divided into two phases and will, after completion of the second phase, provide electricity to 750,000 households.
A wind farm of colossal proportions
The 177 monopiles are up to 60 m in length and have diameters ranging between 4.7 and 5.7 m. With the longest weighing roughly 650 t, they were driven up to 25 m into the seabed. The transition pieces, connecting the foundation and the wind power system, each weigh 350 t and are 27 m long. A total of 100,000 t of steel was used for the foundations. The monopiles were manufactured in Rostock, while the transition pieces were constructed in Denmark. Once production was complete, the monopiles and transition pieces were transported on barges to the port of Harwich in Great Britain, where they were loaded onto special installation ships and taken to the project area.
The project at a glance
London Array Ltd. (joint venture between Dong Energy A/S, E.ON UK LTD., Masdar Ltd)
UK, approx. 20 km off the coast of Kent and Essex, in the Thames estuary
2009 – 2012
50:50 joint venture with the Danish company Per Aarsleff A/S
“Design and Build”, installation of the 177 monopile foundations and transition pieces, transport and logistics for the installation of 175 Siemens 3.6 WTGs
0 – 25 m
Length: max. 60 m, ø: 4.7 – 5.7 m, weight: max. 650 t
Construction of the largest land-based wind turbine ever built in the United States.
“Reaching New Heights” uses a combination of time-lapse footage, aerial photography and behind-the-scenes action shots to document the steps involved in building MidAmerican Energy’s first concrete wind turbine tower, located at the company’s Adams wind farm in Adams County, Iowa. At 379 feet from ground to hub, the concrete turbine is more than 100 feet taller than its neighboring turbines constructed with steel towers.
Down Wind is the explosive documentary that examines Ontario’s controversial rush into industrial wind farm development. Produced by Surge Media, Down Wind exposes how this Canadian provinces’ green energy dream turned into a nightmare for rural residents forced to live among the towering 50 storey turbines.
We hear searing, personal stories of people experiencing mysterious health problems, insomnia, depression, even thoughts of suicide; their lives turned upside down by the constant noise and vibrations given off by the massive wind turbines. The documentary also reveals the staggering economic costs of these wind farms to taxpayers with huge subsidies going to big wind corporations. And how inside connections have made some government cronies wealthy, while rural communities suffer.
The film aired on Canada’s Sun News Network. Media
A wind farm or wind park is a group of wind turbines in the same location used to produce energy. A large wind farm may consist of several hundred individual wind turbines and cover an extended area of hundreds of square miles, but the land between the turbines may be used for agricultural or other purposes. A wind farm can also be located offshore.
Many of the largest operational onshore wind farms are located in the United States and China. For example, the Gansu Wind Farm in China has a capacity of over 5,000 MW of power with a goal of 20,000 MW by 2020. The Alta Wind Energy Center in California, United States is the largest onshore wind farm outside of China, with a capacity of 1,020 MW. As of April 2013, the 630 MW London Array in the UK is the largest offshore wind farm in the world, followed by the 504 MW Greater Gabbard wind farm in the UK.
There are many large wind farms under construction and these include Sinus Holding Wind Farm (700 MW), Lincs Wind Farm (270 MW), Lower Snake River Wind Project (343 MW), Macarthur Wind Farm (420 MW).
By now you’re seeing the trend here: the world’s biggest city, the world’s longest canal, biggest airport, longest high speed rail network and underwater tunnel. So the fact that China is building the world’s largest Wind Power Farm too shouldn’t surprise you. The Gansu Wind Farm Project will produce 20 Gigawatts of power by 2020, and will cost nearly $20 billion to build. Turbines are going up at the staggering rate of 35 per day across the three areas that make up the power base. In 2012, Gansu’s capacity surpassed the total wind-generated-electricity produced by all of the United Kingdom, and it’s just the largest of six mega-wind farms currently under construction throughout China.
But China isn’t embracing wind just to reduce its carbon emissions, it’s doing everything it can to simply keep the lights on. Some parts of the country with booming middle class populations suffer persistent electricity shortages because, just like us, people want refrigerators, dishwashers, washer and dryers, and computers in their homes, but there’s only so much energy to go around.
So China’s State Council is pushing for an across-the-board renewable strategy to reduce its dependence on oil, coal and gas, the finite resources of the 20th century whose extraction and consumption are subject to constant geopolitical tensions.
As a result, since 2013, China has led the world in renewable energy production, with a total capacity of 378 installed Gigawatts, coming from projects as wide-ranging as Gansu to hydroelectric power plants like the Three Gorges Dam, which spans the Yangtze River and is the world’s largest power station of any kind. In just the last 10 years, China has increased its solar panel production 100-fold to become the world’s leading manufacturer of the technology.
With China now pumping more CO2 into the atmosphere than the number two and three emitting countries – the US and India – combined, it’s vital for the future of the planet that it continues using MegaProjects to create a lot more Megawatts of clean, green power.
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PETERHEAD, SCOTLAND — Scotland’s notoriously strong winds could pan out to be a blessing in disguise after the Scottish government recently approved plans for a floating wind farm right off of the Scottish coast.
According to the Guardian, Statoil, a Norwegian energy company, plans to build a floating wind farm 15 miles off the coast of Peterhead, Scotland by the end of 2017.
The floating wind farm, called the Hywind floating wind farm, will consist of five, 258-meter-high floating wind turbines. Each will have a floating steel tube filled with ballast as their base and they will be tethered to the seafloor by three moorings.
Each of the five wind turbines will have a six-megawatt capacity, and together they will be able to power an estimated 20,000 homes.
Because they’re not actually attached to the seabed, these types of wind turbines are cheaper than traditional ocean turbines and can be placed in deeper waters. Existing offshore wind turbines, which need to stand on concrete or steel foundations, are expensive if anchored to depths greater than 40 meters, reported the Guardian.
Statoil’s goal with this $232 million pilot project is to demonstrate a way to harness wind power that can increase the global market potential for turbines.
Offshore wind is a key component of Europe’s plan to source 20 percent of its total energy consumption from renewables, reported the Independent.