ADFEC (Masdar) built Siemens Headquarters in Abu Dhabi in 2013. This office comprises 5 floors and has in total a built-up area of 22800 m². The main measures to save energy are a solar thermal collector on the roof for water heating, LED lighting, a mechanical ventilation system with heat recovery, and district cooling and heating. A highly insulated, airtight inner facade reduces thermal conductivity, lightweight aluminium external shading system minimises solar gain and maximises daylight and views from the building. The building performs 46% better than the baseline ASHRAE energy model.
Detailed building type
Net floor area
Original construction year of the building
Contact email address
David Ardill, Sheppard Robson, London | UK
Building Rating and Certifications systems
Rating and certifications systems
Pearl Rating System for Estidama
Openings and windows
Overall u-value window
Description of construction
The floor plates are punctured vertically by nine atria and six perimeter service cores. They are completely column-free, allowing for maximum flexibility, which is a core tenet of sustainability.
Technical Building Systems
Type of ventilation
Mechanical ventilation system with heat recovery
Electronically commutated DC fan coil unit is used for zonal cooling with outdoor air supplied by variable volume dedicated outdoor handling units. Double wheel technology used for heat recovery, it recovers up to 80% of the exhaust air energy.
Space cooling system
Primary space cooling system
The building is served by Masdar's district cooling system which provides chilled water at 7°C.
Space heating system
Primary Space heating system
Water heater system
Primary water heater system
Solar Thermal collector on the roof
Solar thermal collector on the roof generate about 75% of the building's hot water heating requirements over the course of the year. The remaining of the annual hot water demand is provided by centralised electric heater located on the roof.
Primary lighting system
LED (Light emitting diode lamps)
The architecture allow plenty of natural light into the offices.The balance between natural and artificial light is regulated through a series of daylight and motion sensors.
Type of shading system installed
Static (fix) shading systems as part of the building architecture (e.g. Maschrabiyya, porch roofs, pergolas)
The distinctive façade is characterised by a series of aluminium shades over the windows. These shades are individually designed to provide 100% shading for 95% of the glazed surfaces.