University of Texas at Austin
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
2.10 / 6.00 |
Jim
Walker Director of Sustainability, Financial, and Administrative Services University Operations |
Part 1. Site energy use per unit of floor area
Performance year energy consumption
| kWh | MMBtu | |
| Imported electricity | 355,151,169 Kilowatt-hours | 1,211,775.79 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 378,434 Kilowatt-hours | 1,291.22 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 138,887 MMBtu |
| Imported steam, hot water, and/or chilled water | 2,730,602 MMBtu |
Total site energy consumption, performance year:
Performance year building space
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 2,292,493 Square feet |
| Healthcare space | 155,930 Square feet |
| Other energy intensive space | 561,355 Square feet |
EUI-adjusted floor area, performance year:
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 1,616 Degree-Days (°F) |
| Cooling degree days | 3,294 Degree-Days (°F) |
Total degree days, performance year:
Performance period
| Start date | End date | |
| Performance period | Sept. 1, 2022 | Aug. 31, 2023 |
Metric used in scoring for Part 1
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.
| kWh | MMBtu | |
| Imported electricity | 341,914,000 Kilowatt-hours | 1,166,610.57 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 848,500 Kilowatt-hours | 2,895.08 MMBtu |
Stationary fuels and thermal energy, baseline year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 99,368 MMBtu |
| Imported steam, hot water, and/or chilled water | 759,561 MMBtu |
Total site energy consumption, baseline year:
Baseline year building space
Baseline period
| Start date | End date | |
| Baseline period | Sept. 1, 2018 | Aug. 31, 2019 |
A brief description of when and why the energy consumption baseline was adopted:
Baseline year moved ahead in time to represent most recent year of non-COVID normal energy use.
Source energy
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.14 MMBtu per square foot | 0.22 MMBtu per square foot |
| Baseline year | 0.07 MMBtu per square foot | 0.16 MMBtu per square foot |
Metric used in scoring for Part 2
Optional Fields
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:
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 energy reductions.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
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 system was re-commissioned in 2022.
A brief description of co-generation employed by the institution:
The 140-megawatt Hal C. Weaver Power Plant 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:
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:
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.