North Bund (Lot 91)
Featured Project
At 480 meters tall, North Bund (Lot 91) will be the world’s tallest, and Shanghai’s first, all-electric supertall, creating a new framework for sustainable towers by prioritizing carbon footprint reduction and serving as a model for the city’s responsible growth.
The New Vertical City
In recent years, the attitude toward supertall buildings has shifted globally, and especially in China. Avoiding the promotion of height for height’s sake, KPF believes in good urbanism, both horizontal and vertical. In China, our nearly 500-meter-tall design for North Bund (Lot 91) is functionally a vertical city, with different uses occupying their ideal height and floorplate. Public civic spaces are drawn from the surrounding park up through the tower and into the crown.
Form that Fulfills Function
The main form of the tower begins as a circle at ground level and transforms into a triangle as the floors rise. Its modulated triangular shape reduces wind loads while looking to each of the three major surrounding districts. The evolving form perfectly fits the different programmatic requirements of the tower—wide, flexible floorplates at the base for offices and thinner, view-oriented spaces at the top for a hotel.
The Park
The main form of the tower begins at ground level as a circle with a flared base, optimizing the pedestrian zone that connects to the park, mass transit, and bridges.
The Lobby
This form offers a welcoming gesture to all who approach, and brings the surrounding public realm into conversation with the base of the tower.
The Atriums
The tower’s self-sustaining, year-round sky parks connect to the ground, pulling lush landscape from the nearby park into its publicly occupiable floors, allowing visitors to be immersed in nature and Shanghai’s skyline.
The Crown
The crown of the tower houses flexible public programs, including the observation deck that serves as a universal event space.
A Public Space in the Sky
A Culmination in the Crown
Located near the confluence of two bodies of water, the Huangpu River and Suzhou Creek, and at the nexus of three neighborhoods, LuJiaShui, PuXi, and North Bund, the project reflects themes of intersection and balance throughout its design. Responding to the curves of the rivers and reflecting the surrounding cityscape, the tower culminates in a triple-arched, publicly accessibly, cathedral-like crown.
Soaring vertical recesses emphasize the tower’s connection from ground to sky, ensuring the supertall remains visually approachable and reminding all that the tower’s highest point is truly publicly accessible.
Column-free, Ultra-flexible Civic Space
The structure is configured through a series of arches to allow for a generous, column-free interior, maximizing flexibility.
Optimizing Thermal Comfort and Views
Integrated fins shade the tower’s high-performance façade and minimize peak heating and cooling loads, utilizing air source heat pumps that are three times more energy efficient than electric boilers. Catching the sun at an oblique angle, the façade also minimizes solar heat gain, while integrated photovoltaic solar panels will capture energy to supplement the building’s needs.
Next Generation Sustainability
To support China’s vision of becoming fully carbon neutral by 2060, the tower is fully electrified, burning no fossil fuels on site. North Bund (Lot 91) creates significant environmental and social impact in the urban realm. Advanced mechanical, façade, and structural solutions will work together with energy-efficient technologies to reduce operational carbon by 40–50% and embodied carbon by 20–30% compared to a typical supertall.
With fully electric MEP systems, the building implements heating recovery districts across mixed-use programs. All heating and hot water from the hospitality floors will be generated by heat recovery from commercial floors. The tower also cuts carbon in materials, using 25% less material than similar supertall buildings and includes low-carbon replacements for steel and cement.
Optimized Tower Structure
The structure’s triangular footprint dampens the effects of wind, allowing for less material use. The use of high-strength steel and optimized members alongside recycled materials results in a 10–20% reduction in carbon footprint.
Fully Triple Glazed
North Bund (Lot 91) is the tallest 100% triple glazed tower in the world—a feat of insulation and energy efficiency never before accomplished at this scale. The walls are made with the highest standards of insulation and have a 50% window-to-wall ratio, significantly reducing energy consumption.
Sponge City Tower Planning
The form of the roof directs rainwater to a single point for collection, where it is then stored, treated and reused. The flared base also collects rainwater, supporting sponge city policies.
All-Electric Ready
As the first all-electric ready supertall tower in the world, the building also takes advantage of state-of-the-art heating and cooling systems and BIPV panels, making it ready for an all electric grid and to operate as efficiently as possible while taking pressure off the grid at peak times.
Project Details
North Bund (Lot 91) creates a new framework for sustainability as the world’s tallest all-electric building, with an emphasis on public accessibility and connection to the city of Shanghai.