201 Bishopsgate & The Broadgate Tower

1992 Unbuilt Design Award: Honor Award AIA – Chicago Chapter

2010 New City Architecture Award - Worshipful Company of Chartered Architects

2010 Divine Detail Award: Special Recognition AIA – Chicago Chapter

2009 Building Excellence Award: Best Structural Engineering Innovation – London District Surveyors Association

2009 Best Commercial Building: Over £1M LABC

2009 Award for Commercial or Retail Structures: Commendation – Institution of Structural Engineers

2009 Best tall Building Europe – Council on Tall Buildings and Urban Habitat (CTBUH)

1992 Unbuilt Design Award: Honor Award AIA – Chicago Chapter

A strong focus on integrating sustainable features throughout the design and the construction of the Broadgate Tower has resulted in a highly efficient building without compromising operational performance. To reduce energy consumption, several provisions were incorporated into the design, such as:
- Water cooled chillers with centrifugal variable speed drives and associated cooling towers for heat rejection;
- High efficient chillers with a low turn down ratio to enable benefits of chillers to be passed onto the tenant in all operating conditions:
- Heat recovery from office ventilation plant using thermal wheels, taking advantage of the heat gains in the office space and reducing the requirement for heating air from the outside;
- Variable speed drivers fitted to all pumps and fans;
- Fan coil units with EDC motors and providing variable speed control matched to cooling load;
- Office lighting to have dimming, presence and daylighting control;
- Energy metering of chilled water, hot water and electrical services to each floor, and
- A comprehensive building management and monitoring system.

The low-E coated glass (low emission glass with a microscopically thin coating of metal oxide) used for the external facades reduces solar gain and keeps cool air inside, thus decreasing the need for cooling and almost eradicating heating requirements.

Further energy savings are achieved through the use of double deck, which require a single, larger, more efficient lift motor to carry two cars of passengers simultaneously, thus halving the number of motors required.

A building user guide is provided to ensure that occupiers operate in the building as efficiently as envisaged. Features such as local lighting zones, water metering and electricity sub-metering allow occupiers to take control of their own work environment.

The development provides and innovative and elegant response to complex site constraints while delivering buildings that reflect the commitment of both client and architect to a sustainable and environmentally sound future.

Source: Council on Tall Buildings and Urban Habitat