Overall Rating Silver - expired
Overall Score 55.88
Liaison Jim Walker
Submission Date April 30, 2014
Executive Letter Download

STARS v2.0

University of Texas at Austin
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 2.14 / 6.00
"---" indicates that no data was submitted for this field

Total building energy consumption, all sources (transportation fuels excluded):
Performance Year Baseline Year
Total building energy consumption 3,366,723 MMBtu 3,471,476 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 829,915 MMBtu 826,151 MMBtu
District steam/hot water 842,779 MMBtu 887,693 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 22,623,133 Gross square feet 19,623,544 Gross square feet

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 8,037,427 Square feet
Healthcare space 34,542 Square feet
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 3,357
Cooling degree days 1,566

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 2.60
District steam/hot water 1

Start and end dates of the performance year and baseline year (or 3-year periods)::
Start Date End Date
Performance Year Sept. 1, 2012 Aug. 31, 2013
Baseline Year Sept. 1, 2008 Aug. 31, 2009

A brief description of when and why the building 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 by 20% by the year 2020. All Campus Planning and Facilities Services operational units contribute to these reductions.

A brief description of any building temperature standards 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 any light emitting diode (LED) lighting employed by the institution:
LED lighting is used for a large display case in Butler Hall, an academic building. 15-4 foot and 11-2 foot LED sections were installed.

A brief description of any occupancy and/or vacancy sensors employed by the institution:
There are motion sensors in hundreds of classrooms, residence halls, and meeting spaces. 2,300 sensors were installed in 2008's Demand-Side Energy Management project. All new building employ motion sensors where it makes sense for the occupant.

A brief description of any passive solar heating 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 any ground-source heat pumps employed by the institution:

A brief description of any cogeneration technologies 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 any building recommissioning or retrofit program employed by the institution:

A brief description of any energy metering and management systems employed by the institution:
The University's co-generation power plant features a central energy consumption management system, which captures performance. Along with UEM, which ensures the power source the to the building is running efficiently, the Energy and Water Conservation Program employees Energy Cap to assess EUI and performance data for campus buildings.

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

A brief description of any energy-efficient landscape design initiatives employed by the institution:

A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
"VendingMiser" sensors are installed on many vending machines across campus. This was done through a student grant initiative in partnership with the UT Campus Environmental Center in 2006. All new vending machines provided by Pepsi are Energy Star compliant.

A brief description of other energy conservation and efficiency initiatives employed by the institution:
Facilities Maintenance division created a new Energy and Water Conservation Program in the fall of 2012. The groups main focus is to reduce demand side energy and water throughout campus. In collaboration with CPFM staff and campus occupants, they use a combination of technical strategies- HVAC schedules, hot and cold deck resets, and ventilation reductions- as well as behavioral strategies- Longhorn Lights Out, Ultra-Low Freezer Loaner Program, Power Down Assessments, and Conservation Conversations, to work towards the campus goal of 20% reduction by the year 2020.

The website URL where information about the institution’s energy conservation and efficiency initiatives is available:
Data source(s) and notes about the submission:

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