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Foster's new Bloomberg HQ claimed as world’s most sustainable office

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Bloomberg’s new £1 billion building in the City of London has scored a 98.5 per cent BREEAM Outstanding rating – the highest design-stage score ever achieved by any major office development

Foster + Partners’ European HQ for the fin-tech company opens later this month with an array of energy and water saving measures, which Bloomberg says makes it the world’s most sustainable office building.

The bronze-bladed, sandstone-clad building covers more than 1.2ha. In plan it is two triangles with an arcade in between, following the line of an original Roman street and lined with restaurants as a new foodie-hub. The building creates three public spaces at its edges, with its larger section organised around a bronze-clad spiral ramp set within a top-lit atrium, and it also incorporates a new entrance for Bank Underground Station and 250-seat theatre. 

New ldn building overhead shot

New ldn building overhead shot

Source: Foster + Partners

The deep plan interior spaces can be naturally ventilated as needed, with the building’s distinctive bronze blades opening and closing in what is described as a ‘breathable’ façade. Smart CO₂ sensing, in addition, gives the ability to adjust airflow distribution according to the number of people occupying each zone of the building, enabling CO₂ emissions to be reduced by approximately 300 tonnes each year.

New ldn building exterior blades

New ldn building exterior blades

Source: Foster + Partners

Other innovative energy-saving design features include integrated ceiling panels, which combine heating, cooling, lighting and acoustic functions. Arranged in a petal-leaf design, these incorporate 500,000 LEDs, using 40 per cent less energy than a typical fluorescent office lighting system. Rainwater and all grey water can be captured, treated and recycled on site to serve vacuum-flush toilets, meaning no mains water is used for flushing, saving 25 million litres of water per year. 

New ldn building interior intergrated ceiling panels

New ldn building interior integrated ceiling panels

Source: Foster + Partners

In addition, an on-site combined heat and power (CHP) generation centre reduces annual CO₂ emissions by 500-750 tonnes. 

Overall, compared to a typical office, the new building is predicted to deliver a 73 per cent saving in water consumption and a 35 per cent saving in energy consumption and associated CO₂ emissions, in what Norman Foster describes as a ’connected, healthy and creative environment’. 

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Readers' comments (1)

  • Also possibly London's only building standing over a Roman temple!
    https://en.wikipedia.org/wiki/London_Mithraeum

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