Overall Rating	Gold
Overall Score	73.33
Liaison	Maria Dahmus
Submission Date	Nov. 30, 2023

STARS v2.2

University of St. Thomas
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	4.80 / 6.00	David Clysdale Mechanical Maintenance Supervisor Facilities Management

"---" 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	30,225,866 Kilowatt-hours	103,130.65 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	30,550 Kilowatt-hours	104.24 MMBtu

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

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	160,740 MMBtu
Imported steam, hot water, and/or chilled water	20,303 MMBtu

Total site energy consumption, performance year:

284,277.89 MMBtu

Performance year building space

Gross floor area of building space, performance year:

3,668,652 Gross square feet

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	17,601 Square feet
Healthcare space	17,265 Square feet
Other energy intensive space	128,303 Square feet

EUI-adjusted floor area, performance year:

3,866,687 Gross square feet

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	7,273 Degree-Days (°F)
Cooling degree days	1,147 Degree-Days (°F)

Total degree days, performance year:

8,420 Degree-Days (°F)

Performance period

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

	Start date	End date
Performance period	July 1, 2022	June 30, 2023

Metric used in scoring for Part 1

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

8.73 Btu / GSF / Degree-Day (°F)

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	39,123,913 Kilowatt-hours	133,490.79 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	3,122 Kilowatt-hours	10.65 MMBtu

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

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	194,048.80 MMBtu
Imported steam, hot water, and/or chilled water	28,183 MMBtu

Total site energy consumption, baseline year:

355,733.24 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

3,170,000 Gross square feet

Baseline period

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

	Start date	End date
Baseline period	July 1, 2012	June 30, 2013

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

Baseline year was developed using information from the university's FY13 Key Performance Indicators. It was selected because it had the most comprehensive and reliable data available.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.08 MMBtu per square foot	0.13 MMBtu per square foot
Baseline year	0.11 MMBtu per square foot	0.20 MMBtu per square foot

Metric used in scoring for Part 2

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

31.93

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 Office of Sustainability Initiatives' student sustainability leaders conduct peer education on a range of sustainability topics, including energy conservation tips. Energy conservation is included in the Guide to Sustainable Living which provides learning and resources for leading a sustainable lifestyle at St. Thomas. Guide to Sustainable Living at the University of St. Thomas: https://www.stthomas.edu/_media-library/_documents/residence-life/guide-to-sustainable-living.pdf

In the spring of 2021, the University of St. Thomas held the Minnesota Cross-Campus Ecochallenge to encourage students and employees to engage in sustainable behaviors. The Ecochallenge includes an energy category that encourages and educates participants on how to take actions to conserve energy and support renewable energy.

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

The University has standard building space temperatures between 70 (heating) and 76 (cooling) during occupied times and between 60 and 80 during unoccupied times. The building automation system (BAS) is utilized in over 95% of all buildings controlling the HVAC schedules, temperature control and alarm functions. Occupancy sensors are used throughout the buildings to control lighting ventilation systems.

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

The University began retrofitting to LED light technology in 2012/2013. The university employs LED lighting in the following areas:
- Dormitories: occupant rooms, common areas, kitchens and stairways.
- Academic buildings: offices, common areas and stairways
- Exterior walk ways, wall-pac lighting parking lots and parking ramps.

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

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

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

The University instituted a program of re-commissioning and continuous commissioning in 2010. A study is conducted in two to three building per year and a list of Energy Conservation Measures (ECM) is developed and implemented. ECMs include temperature control retrofits, lighting upgrades, replacements and equipment upgrades. The University works with its energy provider to develop rebates to support the ECMs.

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

http://www.stthomas.edu/sustainability/

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.