Bahrain World Trade Center
The Bahrain World Trade Center Towers are twin towers and one of the tallest buildings in Bahrain located in its capital city, Manama. The towers are 240m high each with a total floor count of 50. Three bridges in the lower half of the towers connect the towers to one another and hold three massive turbine blades, one on every bridge and face north, the direction from which air from the Persian Gulf blows. Having turbine blades serving as a partial source of electricity for the towers is a first for all skyscrapers throughout the world, with each blade expecting to provide 3.5-5% of the towers' total power consumption. This is equivalent to the power consumption of 100 homes (apx. 1.1 to 1.3 GWh) annually. The towers are in the final stages of construction (structure wise) and will be completed sometime in 2008.
Three wind turbine blades have been successfully installed on the Bahrain World Trade Center, a twin skyscraper complex. This is the first time that a commercial development has integrated large-scale wind turbines within its design to harness the power of the wind. The three massive turbines, measuring 29 meters in diameter, are supported by bridges spanning between the complex's two towers. Through its positioning and the unique aerodynamic design of the towers, the prevailing on-shore Gulf breeze is funneled into the path of the turbines, helping to create power generation efficiency.
Once operational, the wind turbines will deliver approximately 11-15% of the energy needs of the building, or 1100 to 1300 megawatt-hours per year -- enough to provide light in 300 homes for over a year.