Overall Rating	Gold - expired
Overall Score	70.12
Liaison	Maria Dahmus
Submission Date	March 5, 2021

STARS v2.2

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

Status	Score	Responsible Party
	4.15 / 6.00	David Clysdale Mechanical Maintenance Supervisor Facilities Management

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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	26,722,916 Kilowatt-hours	91,178.59 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	37,074 Kilowatt-hours	126.50 MMBtu

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

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	189,101.50 MMBtu
Imported steam, hot water, and/or chilled water	17,983.70 MMBtu

Total site energy consumption, performance year:

298,390.29 MMBtu

Performance year building space

Gross floor area of building space, performance year:

3,138,789 Gross square feet

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	97,754 Square feet
Healthcare space	17,265 Square feet
Other energy intensive space	89,256 Square feet

EUI-adjusted floor area, performance year:

3,458,083 Gross square feet

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	8,024 Degree-Days (°F)
Cooling degree days	916 Degree-Days (°F)

Total degree days, performance year:

8,940 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, 2019	June 30, 2020

Metric used in scoring for Part 1

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

9.65 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	28,183.05 MMBtu

Total site energy consumption, baseline year:

355,733.29 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:

We selected the baseline based on the earliest year for which data is available in the university's current tracking system of key performance indicators.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.10 MMBtu per square foot	0.15 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:

22.03

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:

In the summer of 2019, the University of St. Thomas held a two-week Campus EcoChallenge to encourage students and employees to engage in sustainable behaviors. The Office of Sustainability Initiatives' student sustainability leaders conduct peer education on a range of sustainability topics, including energy conservation.

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:
- Residence Halls: occupant rooms, common areas, kitchens and stairways
- Academic buildings: offices, common areas and stairways
- Exterior walk ways, wall-pack 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 it energy provider to develop rebates to support the ECMs.

In 2010 and 2015, the university received awards from Xcel Energy for achieving the largest amount of natural gas savings among its commercial customers.

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

https://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.