High-Performance Tower in Australia

Energy-efficient urban tower

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    Air Space: well-being through natural ventilation and biophilia. — Research has identified many positive impacts of mass-timber spaces. Here it will help to create healthy and inspiring working environments. Taking advantage of Sydney’s temperate climate, the tower uses an energy-efficient system that balances a naturally ventilated enclosure with strategic use of mechanical air-handling zones. Generous plantings complete the connection to nature.

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    Global Holcim Awards Commendation and Holcim Awards Bronze Asia Pacific

    Winner presentation to High-performance Tower - Energy-efficient urban high-rise, Sydney, Australia (l-r): Magali Anderson, Member of the Board of the Holcim Foundation, Chief Sustainability and Innovation Officer of the Holcim Group; Edwin Chan, EC3 Design, USA; James O’Callaghan, Eckersley O’Callaghan, UK; Andreia Taixeira, USA; Lisa Ramming, EC3 Design, USA; Wolfgang Kessling, Transsolar Energietechnik, Germany; Philippe Block, Member of the Holcim Awards jury Asia Pacific 2020, Professor of Architecture & Structure, ETH Zurich; and Marilyne Andersen, Head of the Academic Committee of the Holcim Foundation, Member of all Regional/Global Holcim Awards juries 2020/21, Professor of Sustainable Construction Technologies, EPFL Lausanne, Switzerland

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    An ecological balance is achieved by using steel at the city scale and timber at the human scale.

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    Global Holcim Awards Commendation and Holcim Awards Bronze Asia Pacific

    Winner presentation to High-performance Tower - Energy-efficient urban high-rise, Sydney, Australia (l-r): Maria Atkinson, Chairperson of the Holcim Foundation (at podium); Magali Anderson, Member of the Board of the Holcim Foundation, Chief Sustainability and Innovation Officer of the Holcim Group; Edwin Chan, EC3 Design, USA; James O’Callaghan, Eckersley O’Callaghan, UK; Andreia Taixeira, USA; Lisa Ramming, EC3 Design, USA; Wolfgang Kessling, Transsolar Energietechnik, Germany; Philippe Block, Member of the Holcim Awards jury Asia Pacific 2020 and Academic Committee of the Holcim Foundation; and Marilyne Andersen, Head of the Academic Committee of the Holcim Foundation, Member of all Regional/Global Holcim Awards juries 2020/21.

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    Warm wood glowing on the skyline will broadcast a message of the project’s sustainable construction.

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    The tower promotes social inclusion with preserved heritage elements and a network of car-free space.

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    Office spaces are fine-tuned to the distinct environmental and psychological needs of each work.

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    Future workspaces will be more collaborative and closer to nature.

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    The project debuts a bold new method for embodying carbon in tall buildings around the world.

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    Our approach shows that a strategy to optimize wellbeing can also yield tremendous energy savings.

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    50% of carbon emissions can be reduced at the site. RE100 energy compensates operational emissions.

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    Teamwork. Team image at a design workshop 2020.

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    Urban Identity: a new sustainability model for the Sydney skyline. — Our design aims to showcase a new model for tall building construction around the world. With a novel, hybrid structural basis and an emphasis throughout on next-generation systems design, it brings nature into the workplace, supports economic vitality and points the way to an ethical mode of new construction that will also support socially inclusive placemaking and responsible environmental performance.

  • Awards Commendation 2020–2021 Global
  • Awards Bronze 2020–2021 Asia Pacific

By James O’Callaghan, - Eckersley O’Callaghan, London, United KingdomEdwin Chan, - EC3 Design, Los Angeles, CA, USARic Wang, - Atlassian, Sydney, AustraliaCorie D Sharples, Andreia Taixeira, - SHoP, New York City, NY, USAWolfgang Kessling - Transsolar Energietechnik, Munich, Germany and

Ideas: Embodied Carbon , Responsibly Sourced Materials, Circular Design

A revolutionary tower building achieves an outstanding environmental performance while providing new programmatic elements.

High-Performance Tower in Australia

Project authors

  • Global Holcim Awards Commendation and Holcim Awards Bronze Asia Pacific
    James O’Callaghan

    Eckersley O’Callaghan

    United Kingdom

  • Global Holcim Awards Commendation and Holcim Awards Bronze Asia Pacific
    Edwin Chan

    EC3 Design

    USA

  • Ric Wang

    Atlassian

    Australia

  • Corie D Sharples

    SHoP

    USA

  • Global Holcim Awards Commendation and Holcim Awards Bronze Asia Pacific
    Andreia Taixeira

    SHoP

    USA

  • High-Performance Tower in Australia
    Wolfgang Kessling

    Transsolar Energietechnik

    Germany

  • Ninotschka Titchkosky

    BVN

    Australia

Project updates