Newham University Hospital

E.ON have begun working with Newham University Hospital in East London to improve energy efficiency and reduce carbon emissions.

The project is amongst the very first of the London Development Agency’s (LDA) RE:FIT programme which aims to reduce the capital’s carbon emissions by updating public buildings with the most effective energy saving measures.

E.ON have developed a six-year Energy Performance Contract with Newham University Hospital.

The benefits

  • Guarantees the level of energy savings that will be achieved for the available budget
  • Reduces carbon emissions and energy costs
  • Will exceed the investment requirements set out in the RE:FIT programme
  • Delivers additional operational benefits over and above energy and carbon reductions.

The project

E.ON’s Carbon Consultancy team were tasked with designing a specific energy solution, within a tight public sector budget, to meet guaranteed energy saving requirements. It was clear that the current air handling units at the hospital were installed when the building was constructed in 1982 and as such are relatively old and inefficient. Upgrading to modern, significantly more efficient units would therefore form the central plank of the solution. 

The proposed design:

  • met the hospitals budget
  • met the return on investment requirements
  • reduces energy consumption
  • reduces carbon emissions
  • minimises disruption to patients, staff and visitors
  • The first phase of the project involves replacing air handling units (AHUs), which supply heating, cooling and ventilation to wards and theatres, with more energy efficient systems.

Overall, this simple project reduces the hospitals energy consumption by more than 940,000 kWhrs1 per year and is expected to pay for itself within seven years, whilst cutting the hospital’s carbon emissions by more than 3,000 tonnes2 over the same period. Future improvements, including further Air Handling Plant replacement and Dry Air Chilled Heat recovery, are planned to reduce the hospital’s energy use further.

The technology

The new AHUs will use heat recovery, where heat is taken from the extracted air and transferred back into the supply air without mixing the two streams. This is important in a medical application such as a hospital, where ‘contaminated’ extract air should not be reintroduced into the building.

The AHU’s will not only help the hospital meet its objectives to reduce energy consumption but will also contribute to the carbon goals for London.


The purpose of RE:FIT is to assist public bodies in London to significantly reduce carbon emissions from buildings which will help London achieve its overall target of cutting carbon emissions by 60% by 2025 (as set out in London’s Climate Change Action Plan 2006)

“Following a detailed audit of our existing solutions, E.ON were able to recommend a solution that met all of our requirements.”

Kai Kin Lee
Capital Design Project Manager
Newham University Hospital

1 Total Energy Usage is based on the projected target usage figure provided by the Trust in the Information pack supplied to Clients.
Savings based on baseline energy consumption of 1,751,596 kWhrs provided by Newham University Hospital and expected energy consumption of the new system of 809,865 kWhrs from the energy conservation equipment manufacturer.

2 CO2 calculations are based on 2009 DECC/Defra conversion factors for Kgs of CO2 per KWh which are:

0.18396 for Gas 0.54418 for Electricity