Taipei 101, Taipei, Taiwan

LEED certified: The tallest “green” building in the world


With 101 floors and five basement levels, the Taipei World Financial Center – or Taipei 101 for short – in Taiwan is the second tallest building in the world.


The assignment was to transform the office tower into an internationally aclaimed “green” building by achieving Leadership in Energy and Environmental Design (LEED) certification. The project included identifying ways to save on energy costs and improving the buildings performance.

Taipei 101, Taipei, Taiwan


An Apogee building automation system; the largest water-distribution system in Asia, with more than 3,400 terminal box controllers; and an Osram lighting system networked with the air-volume system had already made Taipei 101 extremely energy efficient right from the start.

Siemens was instrumental in two of the seven LEED categories – “Energy & Atmosphere” and “Indoor Environmental Quality” – during the application for LEED for Existing Buildings: Operations and Maintenance (EBOM) certification. The company advised the operator, identified areas for improvement, and helped implement the necessary strategies and construction work for the planned additional energy savings and air-quality improvements in advance of LEED certification. The optimization of the HVAC system with timer-controlled exhaust fans, rationalized operations, and improved algorithms for the air-conditioning system, including other upgrades, was of particular significance.


Since being officially awarded the highest quality level of platinum for LEED Certification for Existing Buildings in July 2011, Taipei 101 has been considered the tallest “green” building in the world. The office tower is now 30 percent more energy efficient than the average building.


  • A nearly 3,000 t reduction in annual CO2 emissions

  • Annual reduction of 10 percent in
    - water consumption: by 28,000 t
    - waste: by 1,261 t
    - electric power: by 4.8 million kWh

  • Annual savings of $700,000 due to reduced power consumption