Abu Dhabi, United Arab Emirates

Siemens Headquarters

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.

Project info

Construction phase
New construction
Building type
Non-residential building
Detailed building type
Net floor area
22800 m2
5 stories
Original construction year of the building
Project contact
Contact email address

Project team

ADFEC (Masdar)
David Ardill, Sheppard Robson, London | UK
Construction contractor(s)

Building Rating and Certifications systems

Rating and certifications systems
Pearl Rating System for Estidama

Building Envelope

External walls

0.28 W/(m²*K)


0.16 W/(m²*K)

Openings and windows

Overall u-value window
1.95 W/(m²*K)

Basement floor

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

Ventilation system

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
District heating

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.

Lighting system

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.

Shading devices

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.

Final Energy Demand

Total specific final energy demand
109.5 kWh/(m²*a)