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China will build a giant wind turbine as high as a 70-story building.
In China, they plan to build a giant wind turbine as high as a 70-story building. MingYang Smart Energy's new plant, called MySE 18.X-28X, outperforms the MySE 16.0-242 wind turbine under construction and the world's largest 18 MW H260-18MW by CSSC Haizhuang in terms of power and size.
If the H260-18MW blades with a length of 128 m form a circle with an area of about 53 thousand m2 during rotation, then for the MySE 18.X-28X wind generator with a power of “more than 18 MW”, the blade length is 140 m, and the area of the circle formed during rotation is 66 052 m2.
MingYang said the new wind turbine will handle the most extreme weather conditions in the ocean, including super-powerful typhoons of level 17 with wind speeds of over 56.1 m/s (202 km/h). With an average wind speed of 8.5 m/s (30.6 km/h), it will produce 80 GWh of energy per year, according to the company. This amount of electricity is "sufficient to supply 96,000 people."
The trend towards the construction of giant wind turbines is explained by the fact that most of the installation costs are for the arrangement of the foundation on the seabed. The greater the power of the wind generator, the lower the proportion of semi-fixed costs per unit of electricity produced by it.
Compared to 13MW models, the MySE18.X-28X's higher capacity will save the installation costs of 18 units required for a 1GW wind farm, reducing construction costs by $120,000-$150,000 per megawatt, according to MingYang. As a result, savings on the construction of such an object could amount to $120–$150 million. However, in the total amount of the project, this will amount to only 1–2%. For reference, the cost of the 1.2 GW Hornsea One wind farm with 7 MW turbines is estimated at no less than $5.153 billion.