Overall Rating	Gold - expired
Overall Score	76.02
Liaison	Stephanie MacPhee
Submission Date	July 21, 2021

STARS v2.2

Dalhousie University
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	4.29 / 6.00

"---" 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	77,771,335 Kilowatt-hours	265,355.80 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	178,290 Kilowatt-hours	608.33 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	523,185 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, performance year:

789,149.12 MMBtu

Performance year building space

Gross floor area of building space, performance year:

541,246 Gross square meters

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	176,817 Square meters
Healthcare space	929 Square meters
Other energy intensive space	208,399 Square meters

EUI-adjusted floor area, performance year:

1,105,136.52 Gross square meters

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	3,946.50 Degree-Days (°C)
Cooling degree days	162 Degree-Days (°C)

Total degree days, performance year:

4,108.50 Degree-Days (°C)

Performance period

Start and end dates of the performance year (or 3-year period):

	Start date	End date
Performance period	April 1, 2019	March 31, 2020

Metric used in scoring for Part 1

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:

53.64 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	80,264,908 Kilowatt-hours	273,863.87 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	648,465 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, baseline year:

922,328.87 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

468,905 Gross square meters

Baseline period

Start and end dates of the baseline year (or 3-year period):

	Start date	End date
Baseline period	April 1, 2009	March 31, 2010

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

The 2009-2010 Baseline year is used to compare for the University Sustainability Report and the annual GHG Inventory.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	1.46 MMBtu per square meter	1.95 MMBtu per square meter
Baseline year	1.97 MMBtu per square meter	2.55 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:

23.63

Optional Fields

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

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

The Sustainability Office runs campaigns and programs that support energy and water reduction such as Ecolympics, Brightest Idea competition, and lunch and learns, green building tours and education. In addition the office meets regularly with University departments such as Facilities and Ancillary services to embed energy efficiency clauses, requirements and standards in ongoing work.

A brief description of energy use standards and controls employed by the institution:

The University has a temperature standard and employs a number of controls products in systems such as lighting and HVAC systems (opitnet, occupancy, C02, VFDs ...). A set back program is in place and ongoing to make adjustments and to rectify issues such as over-rides. A detailed EMIS program with advanced software and hundreds of meters are deployed.

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:

Dalhousie has completed a Halifax and Agricultural campus wide lighting upgrade that employs LED technology in all parking areas, outdoor lighting, wall packs, most track lighting, chandelier and pot lights. LED tubes have been implemented in new construction and currently all buildings are being converted to LED tube lighting with campus-wide retrofits.

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

New buildings are being designed to consider the site location for maximizing solar gain, geoexchange is considered in each new building project. A 60 well geo-exchange system is installed at our Sexton campus. The University has a number of solar pv, thermal and air installations. Solar wall is added where it makes sense at the site. We are focusing more on solar pv for the integration ease.

A brief description of co-generation employed by the institution:

The University in 2017-2018 has upgraded the steam system in our DE system at the Agricultural campus to hot water. A ORC(hot oil) biomass co-generation system was also installed that produced 1MW of electricity. Waste heat is used to heat the campus.
For the Halifax campuses - we are actively planning a major upgrade to the Halifax Central Heating Plant system and co-generation is a strategy we are always analyzing.

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

Dalhousie is upgrading existing building systems including lighting; heating, ventilation, and cooling systems; lab equipment; water fixtures, water fed and cooled units; fuel switching and additions such as renewable energy. Recommissioning has started on existing building stock.

Website URL where information about the institution’s energy conservation and efficiency program is available:

https://www.dal.ca/dept/sustainability/campus-initiatives/Energy_and_Climate_Change.html

Additional documentation to support the submission:

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Data source(s) and notes about the submission:

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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.