Wind power generation Q&A

　"Mizuho Wharf" where Hamawing is built cannot be entered freely by the general public. Therefore, in order to go to the foot of Hamawing and see up close, it is necessary to participate in tours etc.
For more information, please refer to the following website.

　We recommend "Rinko Park (Seaside Park)" in Minato Mirai 21 district. In addition, near the Pacifico-yokohama National Hall in Rinko Park (Seaside Park), there is also an "enlightenment display board" with explanations about Hama wing, so you can see Hama wing well over the sea.
　You can also see it from the rooftop floor of Osanbashi (Yokohama International Passenger Terminal) (commonly known as the whale).

　Wind power plants operate automatically to generate electricity efficiently, and are controlled in front of the wind. Therefore, in the direction of Hamawing, you can see the current wind direction of Yokohama Port. By the way, it is the southwest wind when facing Minato Mirai, and the southeast wind when facing the Bay Bridge.

　Once a month, wind farms are shut down for regular maintenance. Therefore, it may stop even when the wind is blowing.

　Except for electricity required for maintenance, we are working to supply electricity to businesses in the city that have contracted a 100% renewable energy electricity “Zero Emi Plan®”. For details, please refer to "Overview of Yokohama Wind Power Generation Project".

　On average, it generates about 2.1 million kilowatt hours per year. This power generation is equivalent to about 500 households of the annual power consumption of ordinary households.

　Wind power plants' wings (blades) turn faster as the wind gets stronger, and the tip may be as fast as the Shinkansen.
　It starts to rotate slowly at a wind speed of about 2 meters per second, starts power generation from about 4 meters per second, and automatically stops power generation (turning blades) for safety when the wind speed is more than 25 meters per second. This adjustment of rotation speed adjusts the amount of wind receiving by changing the angle of the blade (blade).

　It is made by Vestas (Vestas) in Denmark.
　In September 2005, we conducted an open call for participants to select wind power generation facilities to be used in this project, and received proposals from five companies. The proposal was reviewed by the Yokohama Wind Power Facility Evaluation Committee, which consists of outside experts with high expertise in wind power generation, and Vestas Wind Power Facility Selection Committee, which was established in Environmental Planning Bureau in November 2005.

　Hamawing is made by Vestas, Denmark, but since there is a steel frame factory designated by a manufacturer in Korea and a Vestas blade factory in China, Nasel (generator part) is Denmark, tower (pillar) is Korea, and blades (wings) are manufactured in China and transported by ship.
　It was landed (drained) at Suzushige Wharf at Yokohama Port, transported to the site by a trailer, and assembled with a large crane.
　For the status at the time of construction, see "Until Hamawing is made".

　A metal called a "receptor" is embedded in the blade (wing) to receive lightning, and from there it is a mechanism that escapes to the ground through a tower (pillar) with a conductor. In addition, the tip of the blade may burst due to the impact of lightning, so that part is prevented by special processing (resin).

　The wind resistance of the wind power plant is 70 meters per second, and the structure of towers (pillars) and foundations has been confirmed based on the Building Standards Law, and will not fall down due to large-scale earthquakes or typhoons. .
　The wind power plant automatically stops when the wind speed is 25 meters or more per second, but when the typhoon approaches and enters the storm area (the area where the average wind speed is 25 meters or more per second is blowing or likely to blow) , The windmill has been stopped in advance.
　In the Great East Japan Earthquake of March 11, 2011, we confirmed that there was no damage, and resumed operation approximately 48 hours later.