Overall Rating Gold
Overall Score 67.08
Liaison Philip Mansfield
Submission Date March 4, 2022

STARS v2.2

Carleton University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 2.83 / 6.00 Gavin Symonds
Manager, Building Operations
FMP
"---" indicates that no data was submitted for this field

Part 1. Site energy use per unit of floor area

Performance year energy consumption

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 66,217,514 Kilowatt-hours 225,934.16 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 0 Kilowatt-hours 0 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 366,200 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
592,134.16 MMBtu

Performance year building space

Gross floor area of building space, performance year:
442,080.72 Gross square meters

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 40,914 Square meters
Healthcare space 1,503 Square meters
Other energy intensive space 0 Square meters

EUI-adjusted floor area, performance year:
526,914.49 Gross square meters

Performance year heating and cooling degree days 

Degree days, performance year:
Degree days
Heating degree days 4,637.90 Degree-Days (°C)
Cooling degree days 323.90 Degree-Days (°C)

Total degree days, performance year:
4,961.80 Degree-Days (°C)

Performance period

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period Jan. 1, 2019 Dec. 31, 2019

Metric used in scoring for Part 1

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
69.90 Btu / GSM / Degree-Day (°C)

Part 2. Reduction in source energy use per unit of floor area

Baseline year energy consumption

STARS 2.2 requires electricity data in kilowatt-hours (kWh). If a baseline has already been established in a previous version of STARS and the institution wishes to continue using it, the electricity data must be re-entered in kWh. To convert existing electricity figures from MMBtu to kWh, simply multiply by 293.07107 MMBtu/kWh.

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 71,232,396 Kilowatt-hours 243,044.94 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 0 Kilowatt-hours 0 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 345,485 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
588,529.94 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:
442,080.72 Gross square meters

Baseline period

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period Jan. 1, 2012 Dec. 31, 2012

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

Source energy

Source-site ratio for imported electricity:
2

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 1.34 MMBtu per square meter 1.85 MMBtu per square meter
Baseline year 1.33 MMBtu per square meter 1.88 MMBtu per square meter

Metric used in scoring for Part 2

Percentage reduction in total source energy consumption per unit of floor area from baseline:
1.62

Optional Fields 

Documentation to support the performance year energy consumption figures reported above:
---

A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
---

A brief description of energy use standards and controls employed by the institution:
Annually, FMP does a systems switchover from heating to cooling taking into account two important constraints:

(1) three consecutive days of 25 degrees Celsius outside temperature, and
(2) weather projections for the next 14 days.

The weather projections are very important because if we were to start the cooling systems and subsequently have water freeze in the cooling towers and pipes, this could inflict major damage to the mechanical parts of the systems, delaying cooling for the season while systems are repaired – and we do not want to do that.

The switchover process usually starts mid May. However, we continue to monitor temperatures and weather forecasts and will respond as appropriate.

The changeover to cooling is performed on the basis of priorities established to

(1) provide comfort to students living in University Housing,
(2) maintain required temperatures to protect equipment and research in progress, and
(3) serve the greatest number of individuals and activities.

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
Currently, a small portion of the lighting across campus has been converted to LED. It is our mission to convert all lighting, eventually, to LED lighting. This is being done through gradual retrofits and upgrades campus-wide.

A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
---

A brief description of co-generation employed by the institution:
Cogeneration system to be in-service Jan 1st 2018.

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
As identified in the energy master plan, buildings are upgraded and retrofits are implemented on average of one building per year. Recommissioning efforts are ongoing for building on an as-needed basis

Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
---

Data source(s) and notes about the submission:
Gavin Symonds
Buildings Operations Manager
Facilities Management and Planning

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 or simply email your inquiry to stars@aashe.org.