Medical Imaging Equipment Energy Use Study


The Coalition is pleased to release our report: Medical Imaging Equipment Energy Use Study: Assessing Opportunities to Reduce Energy Consumption in the Health Care Sector, which was produced with funding from Natural Resources Canada and BC Hydro. Our partner hospitals in this project were Nanaimo Regional General Hospital (NRGH) in British Columbia, The Hospital for Sick Children (SickKids) in Ontario, and University Health Network (UHN) in Ontario. We also extend thanks for Toronto Hydro for lending power loggers for this project. Energy consumption data were obtained from three types of medical imaging equipment:

  1. Computed Tomography (CT)
  2. General Radiography (X-ray)
  3. Magnetic Resonance Imaging (MRI)

A number of recommendations were made including the development of purchasing guidelines, energy behaviour guidance directed at equipment users, optimizing energy consumption of cooling requirements, and the development of a Business Case for medical imaging equipment purchasing personnel.

Health care facilities have high energy intensities: they typically provide services 24 hours a day, seven days a week, and use energy-intensive equipment.

ENERGY STAR® products are available in many consumer and business categories to help purchasers select the most energy efficiency products in a specific category. Currently, there is no ENERGY STAR® designation for high energy-consuming medical imaging equipment used in North American hospitals. The United States Environmental Protection Agency (US EPA) has taken the lead in assessing the opportunity to designate a new category of medical imaging equipment as ENERGY STAR® certified. Natural Resources Canada (NRCan) has been providing assistance to the US EPA to address these opportunities North American-wide.


The Canadian Coalition for Green Health Care was approached by NRCan to undertake a study to gather energy data for three types of medical imaging equipment that have been pre-identified as possible candidates for ENERGY STAR® certification:

  • Computed Tomography (CT)
  • General Radiography (X-ray)
  • Magnetic Resonance Imaging (MRI)

The US EPA is interested in identifying if the ready-to-scan mode or low-power mode of medical imaging equipment are opportunities for energy savings.

The Coalition is partnering with three hospitals to gather this energy use data.


Click here to read the full study.
Read the executive summary here.


Dr. Anthony (Tony) Easty – Institute of Biomaterials and Biomedical Engineering (University of Toronto) – Expert Advisor
The Environmental Protection Agency (US EPA)
Nanaimo Regional General Hospital (NRGH) in British Columbia,
The Hospital for Sick Children (SickKids) in Ontario
University Health Network (UHN) in Ontario

Coalition Project Staff:

Linda Varangu, Executive Director – Project Lead
JJ Knott, HELO Lead Energy Manager
Kent Waddington, Communications Director
Shawn Shi, Energy Analyst, technical assistance and data analysis
Dan Ritchie- Web Support


BC Hydro
Natural Resources Canada

For further information, contact:

Kent Waddington
Canadian Coalition for Green Health Care
1-613-720-4889 or