Manama, Bahrain

Bahrain World Trade Center (BWTC)

Designed by Architectural Firm, Atkins and Architect, Shaun Killa, the strikingly beautiful Bahrain World Trade Center (BWTC) building has become synonymous with Bahrain. The skyscraper has a noteworthy reputation and has won multiple awards, not only for its ground-breaking architecture but for its innovative design as the first commercial building in the world to fully integrate large-scale wind turbines into its design. The buildings design was inspired by traditional Arabian wind towers with sustainability being incorporated from its conception, reducing its overall power consumption by harnessing the sea breeze and self-generating power. BWTC’s other renewable energy solutions include district cooling, water recycling, thermal insulation, reflection pools for evaporative cooling, low-leakage windows, and thermal glass with a low solar gain.

Project info

Construction phase
New construction
Building type
Non-residential building
Detailed building type
Retail / Trade
Net floor area
88617 m2
Land plot size
16500 m2
50 stories
Original construction year of the building
Project contact
Help Desk
Contact email address

Project team

Construction contractor(s)
Nass - Murray & Roberts, Norwin A/S,Elsam Engineering
Energy efficiency consultant(s)
HVAC consultant(s)
Building services
Mercury & Emco
Other project team partners

Building Rating and Certifications systems

Rating and certifications systems
Other certification
LEAF Award for Best Use of Technology within a Large Scheme 2006. EDIE Award for Environmental Excel

Building Envelope

External walls

Description of construction
Enough buffer spaces have been incorporated between the external environment and air-conditioned spaces to reduce solar gain on the building. Two car park decks above and on the southern side of the building minimise solar air temperature.


Roof type
Single Pitch Roof
Description of construction
There are deep gravel roofs that provide kinetic insulation, and energy efficient lighting, all of which demonstrate global leadership in the commitment to reduce demand of fossil fuel energy reserves.
0.48 W/(m²*K)

Openings and windows

Glazing type
Double glazed
U-Value glass
1.8 W/(m²*K)
G-Value glass
Frame material / description
U-Value frame
1.8 W/(m²*K)
Overall u-value window
1.8 W/(m²*K)
Description of construction
Double paned window consist of two facing glass panels in a frame separated by a small space filled with non-toxic gas to improve insulation

Basement floor

Description of construction
Dense concrete core and floor slabs presented to the internal environment in a manner that will leave loads and reduce peak demand with associated reduction in air and chilled water transport system.

Technical Building Systems

Ventilation system

Type of ventilation
Mechanical ventilation system with heat recovery
Total heat energy recovery heat wheel of fresh air intake and exhaust to recover "coolth" from the vitiated air and recover it to the fresh makeup air.
Manufacturer(s) / products

Space cooling system

Primary space cooling system
Centralised chiller │Usually a central system located in the basement
The building is cooled by highly innovative air conditioning and cooling system using chilled water. It provide an environmentally sound alternative to conventional cooling system through recycling of water.
Manufacturer(s) / products
AHU's & FCU's - SKM Pumps- Grundfos
Secondary space cooling system
There are reflection pools at entry points of the building, providing local evaporative cooling.

Space heating system

Primary Space heating system
District heating

Water heater system

Primary water heater system
Combi system (system provides space heat & hot water)
Water consumption saving initiatives include: All the toilets have been installed with sensor wash basin mixers and urinals. The irrigation system is timer based which allows efficient usage of water.

Lighting system

Primary lighting system
LED (Light emitting diode lamps)
Amenity lighting and high-frequency, energy-saving fluorescent lighting with zonal control are included in the building design.
Manufacturer(s) / products
Pulsar / Philips / Osram

Shading devices

Type of shading system installed
Static (fix) shading systems as part of the building architecture (e.g. Maschrabiyya, porch roofs, pergolas)
Energy reducing measures include innovative usage of shading across a significant proportion of projectile shading to external glass façade to minimise solar gains, deep gravel roofs that provide kinetic insulation, and energy efficient lighting, all of which demonstrate global leadership in the commitment to reduce demand of fossil fuels.

Other technical building systems

Solar powered road lighting

Final Energy Demand

Energy carrier (1)
Annual cooling demand
265 kWh/(m²*a)
Annual lighting demand
60 kWh/(m²*a)
Total specific final energy demand
N/A kWh/(m²*a)

Financial Aspects

Project construction cost
124500000.00 EUR