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The Sustainability Tracking, Assessment & Rating System™ (STARS) is a transparent, self-reporting framework for colleges and universities to measure their sustainability performance.

Overall Rating Gold
Overall Score 67.42
Liaison Beverley Ayeni
Submission Date Oct. 6, 2014
Executive Letter Download

STARS v2.0

Western University
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 3.43 / 6.00 Stefanie De Adder
Sustainability Coordinator
Facilities Management
"---" indicates that no data was submitted for this field

Total building energy consumption, all sources (transportation fuels excluded):
Performance Year Baseline Year
Total building energy consumption 1,013,471.07 MMBtu 1,415,142 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 483,589.25 MMBtu 502,908.20 MMBtu
District steam/hot water 529,881.82 MMBtu 912,233.80 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 8,254,478 Gross Square Feet 7,560,844 Gross Square Feet

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 2,902,372 Square Feet
Healthcare space 465,016 Square Feet
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 3,864
Cooling degree days 468

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 2.05
District steam/hot water 1.20

Start and end dates of the performance year and baseline year (or 3-year periods)::
Start Date End Date
Performance Year May 1, 2012 April 30, 2013
Baseline Year May 1, 2009 April 30, 2010

A brief description of when and why the building energy consumption baseline was adopted:

A brief description of any building temperature standards employed by the institution:

The Building Automation System (BAS) enables Western to set the time in which the temperature in an area will adjust due to a change in occupancy.

For example, most buildings have temperature settings programmed to change automatically at night once the buildings are unoccupied.

A brief description of any light emitting diode (LED) lighting employed by the institution:

LED (Light-Emitting-Diode) lighting is used for exterior and interior lighting in more than two dozen locations across campus (e.g., D. B. Weldon Library, and Alumni Hall).

A plan is in place to expand LED lighting to other campus locations where appropriate. Additionally, all 'Exit' sign lights are being replaced with LEDs.

A brief description of any occupancy and/or vacancy sensors employed by the institution:

Whenever an area is renovated, Western explores the possibility of installing occupancy or vacancy sensors. The sensors are a combination of ultrasonic and infrared technologies that provide occupants the most effective control over lighting.

A program is being introduced across campus to harvest daylight by using daylight sensors and auto-dimming features. This helps to reduce in-door lighting without compromising levels of lighting for safety. McIntosh Gallery is one of the buildings where this technology can be found.

A brief description of any passive solar heating employed by the institution:

A brief description of any ground-source heat pumps employed by the institution:

There are geothermal wells located in the courtyard of the Claudette Mackay-Lassonde Pavilion, used to heat the atrium of the Pavilion. The 300 foot geothermal wells are buried under the biodynamic garden and have exposed heads with integrated measurement read-outs and a network of pipes 12 feet under the ground. A fluid mixture of water and ethylene glycol is pumped through to the heat pump, extracting heat out to the hair in the summer and drawing heat from the fluid in the winter.

A brief description of any cogeneration technologies employed by the institution:

A brief description of any building recommissioning or retrofit program employed by the institution:

Western is continuously renovating and retrofitting its buildings.

Western's Five Year Conservation and Demand Management Plan highlights many building recommissioning and retrofit programs that the University intends to pursue in the next five years. It can be found at http://energy.uwo.ca/wp-content/themes/western-energy/_/inc/Approved%20Western's%20CDM%20Plan%20(2014-2019).pdf.

A brief description of any energy metering and management systems employed by the institution:

At Western, energy (e.g., electricity, steam use) is being tracked on a real-time basis for all buildings on campus through the Building Automation System (BAS). BAS allows the control and monitoring of mechanical equipments (e.g., AHUs), room temperatures and other variables. This real time monitoring data is available publically at energy.uwo.ca.

A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:

◾Major upgrade of systems and equipment in the South Power Plant in the past five years which included the replacement of chillers, boilers, pumps and air compressors,
◾Elimination of all domestic water cooling use in laboratory equipment, coolers and research equipment,
◾Yearly upgrades of the Building Automation Systems (BAS)
◾Western’s Environment System(WES) manages the BAS, monitors and controls HVAC, lighting, energy, soil temperature, rainwater and utility systems on Campus,
◾Daylight sensors and auto-dimming features to reduce indoor lighting,
◾Lighting across campus has been gradually retrofitted with a higher standard of energy efficiency,
◾Conversion to LED lighting for exterior and interior lighting in some areas,
◾Exit sign lights are being replaced with LEDs,
◾Insulating main high-pressure steam distribution lines in the power plant,
◾Replacement program for old Air Handling Units (AHUs), pumps and fan motors with high efficiency equipment,
◾Replacement of refrigerators in student apartments with Energy Star-rated units,
◾Replacement of furnaces in student apartments with high efficiency models.
◾Replacement program of incandescent light bulbs in residences and apartments with compact fluorescent bulbs.

A brief description of any energy-efficient landscape design initiatives employed by the institution:

A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:

A brief description of other energy conservation and efficiency initiatives employed by the institution:

The website URL where information about the institution’s energy conservation and efficiency initiatives is available:

The performance year is 2012-2013 (May 1-April 30) as that is the most up-to-date Greenhouse Gas Inventory that has been completed by Western University.

Source-site ratios reflect those that are listed in the Technical Manual 2.0.1 consistent with U.S EPA's Portfolio Manager.

The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution and complete the Data Inquiry Form.