Overall Rating	Gold
Overall Score	69.72
Liaison	Jim Walker
Submission Date	June 6, 2022

STARS v2.2

University of Texas at Austin
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	2.20 / 6.00	Roberto Del Real Director of Utilities - Energy Management and Strategic Programs Utilities

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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	325,799,762 Kilowatt-hours	1,111,628.79 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	446,491 Kilowatt-hours	1,523.43 MMBtu

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

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	1,110 MMBtu
Imported steam, hot water, and/or chilled water	2,406,823 MMBtu

Total site energy consumption, performance year:

3,521,085.22 MMBtu

Performance year building space

Gross floor area of building space, performance year:

27,828,955 Gross square feet

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	2,094,500 Square feet
Healthcare space	120,086 Square feet
Other energy intensive space	545,629 Square feet

EUI-adjusted floor area, performance year:

32,803,756 Gross square feet

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	1,736 Degree-Days (°F)
Cooling degree days	3,123 Degree-Days (°F)

Total degree days, performance year:

4,859 Degree-Days (°F)

Performance period

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

	Start date	End date
Performance period	Sept. 1, 2020	Aug. 31, 2021

Metric used in scoring for Part 1

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

22.09 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	351,017,111 Kilowatt-hours	1,197,670.38 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	80,967 MMBtu
Imported steam, hot water, and/or chilled water	887,693 MMBtu

Total site energy consumption, baseline year:

2,166,330.38 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

22,851,399 Gross square feet

Baseline period

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

	Start date	End date
Baseline period	Sept. 1, 2008	Aug. 31, 2009

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

In 2009, the President Sustainability Steering Committee outlined the Natural Resource Conservation Plan and set the baseline year of 2009 for energy and water conservation. The goal is to reduce energy and water in E&G buildings by 20% by the year 2020. All Campus Planning and Facilities Services operational units contribute to these reductions.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.13 MMBtu per square foot	0.21 MMBtu per square foot
Baseline year	0.09 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:

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:

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

The university implements a standards of temperature in digitally controlled buildings based on building use. Typically, the office/academic buildings operate at a 72 +/- 2 degrees setting for lab and collection spaces the standards are 70 +/- 2 degrees. This also varies based on the HVAC systems and thermal controls. The majority of buildings on campus with BAS controls have a setback schedule implemented during unoccupied times, resulting in drastic energy reductions.

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

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

Currently UT has one solar thermal system. The NHB solar thermal system is the Apricus AP-30 evacuated tube system and consists of 36 5-panel banks. The heated water goes to the reheat coils in the VAV terminal units.

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

The 140-megawatt Hal C. Weaver Power Plant (.mov*) meets the university’s needs 24 hours a day, every day of the year with the following services:
• Electricity—we generate electrical power at 12,000 volts and 4,160 volts for distribution throughout the campus.
• Steam—we generate steam at 425 psi and 710 F for use in the plant, as well as at 160 psi for distribution throughout the campus to provide building heat, heat for hot water, and auxiliary services.
• Compressed Air—we provide air for use in campus buildings and laboratories.
• Demineralized Water—we provide about 8 million gallons of demineralized water to the campus for laboratory use.
• Chilled Water—we distribute about 140,000,000 ton-hours of chilled water through more than 6 miles of chilled water lines to provide air conditioning to the campus.

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

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

http://www.utexas.edu/facilities/sustainability/EWC.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.