Reducing the Imperial College Healthcare NHS Trust's carbon footprint

Entrance of Imperial College Healthcare NHS Trust of London where Dalkia is implementing green energy solutions

The challenge

In London, the Imperial College Healthcare NHS Trust healthcare facility wanted to improve the energy performance of two of its sites, Charing Cross and Hammersmith hospitals. The goal? Reduce their carbon footprint and meet the challenges of the Net Zero plan put in place by the British government.

The solution

An entity of Imtech group, a subsidiary of Dalkia in the United Kingdom, Breathe has proposed a comprehensive approach. The project therefore includes the installation of an air heat pump on the Charing Cross hospital site: this enables the supply of heat and domestic hot water while reducing the consumption of natural gas. At the same time, solar panels have been installed on the two sites in order to create a green and sustainable source of electricity, and to reduce dependence on the electricity grid.

The two hospitals benefit from a series of energy efficiency measures, notably related to lighting, heating, ventilation, air conditioning and energy management. Thanks to the planned maintenance work, it will be possible to replace the old boilers with more modern and energy-efficient equipment.

The benefits

The energy optimization work is expected to have several positive impacts, including:

  • 15% reduction in carbon emissions
  • overall improvement in the energy performance of the two sites
  • reducing dependence on the electricity grid through the installation of solar panels.

The climate change crisis has real implications for the health and wellbeing of our staff, patients and local communities. We embarked on our carbon reduction journey back in 2009 and have already invested £10.4 million…

Professor Tim Orchard,

chief executive at Imperial College Healthcare NHS Trust

We are delighted to enter into a new partnership with the Imperial College Healthcare NHS Trust. This decarbonization project will significantly reduce the Trust's carbon footprint and put it on track to achieve its…

Portrait of Gary Parke CEO of Breathe Imtech Groupe

Gary Parke,

CEO at Breathe, Imtech Groupe

The project in figures

15 %

The reduction in CO2 emissions achieved through energy optimization work

29 M€

The total value of the project


  1. 2009

    Imperial College Healthcare NHS Trust invests in energy efficiency projects to reduce its carbon footprint.

  2. September 2020

    UK public sector decarbonisation program launched.

  3. May 2021

    Attribution of the energy renovation project of the two Imperial College Healthcare NHS Trust sites to Breathe of the Imtech group, a subsidiary of Dalkia in the United Kingdom.

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