Overall Rating Gold
Overall Score 71.94
Liaison Dennis Cochrane
Submission Date Dec. 19, 2017
Executive Letter Download

STARS v2.1

Virginia Tech
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 2.12 / 6.00 Ruben Avagyan
Campus Energy Manager
Facilities Services
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 659,185 MMBtu 683,716 MMBtu
Electricity from on-site renewables 432.04 MMBtu 502.20 MMBtu
District steam/hot water (sourced from offsite) 0 MMBtu 0 MMBtu
Energy from all other sources (e.g., natural gas, fuel oil, propane/LPG, district chilled water, coal/coke, biomass) 1,390,666 MMBtu 1,340,206 MMBtu
Total 2,050,283.04 MMBtu 2,024,424.20 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year Jan. 1, 2016 Dec. 31, 2016
Baseline Year Jan. 1, 2013 Dec. 31, 2013

A brief description of when and why the building energy consumption baseline was adopted (e.g. in sustainability plans and policies or in the context of other reporting obligations):

There was a significant increase in GHG emissions in the 2013 baseline year used. This year was chosen to demonstrate the progress made by Virginia Tech in the three year time period to reduce campus-wide energy use and greenhouse gas emissions.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 10,140,464 Gross Square Feet 10,048,489 Gross Square Feet

Source-site ratio for grid-purchased electricity:

Total building energy consumption per unit of floor area:
Performance Year Baseline Year
Site energy 0.20 MMBtu / GSF 0.20 MMBtu / GSF
Source energy 0.34 MMBtu / GSF 0.35 MMBtu / GSF

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

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 4,664 Degree-Days (°F)
Cooling degree days 915 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 1,529,278 Square Feet
Healthcare space 100,000 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
14,322,902 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
25.66 Btu / GSF / Degree-Day (°F)

Documentation (e.g. spreadsheet or utility records) to support the performance year energy consumption figures reported above:

A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency (e.g. outreach and education efforts):

A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):

The university uses a Siemens APOGEE-based Building Automation System (BAS) to provide normal temperature and humidity control for ~80% of campus buildings. Beginning in 2009, Virginia Tech’s Facilities staff began implantation of time-of-day scheduling of HVAC Air Handler Unit operation and associated chilled water flow based on occupancy rates in non-critical buildings. Academic year nighttime and weekend automatic schedules are programmed for ~30 of campus buildings as well as further reduced schedules for extended breaks and summer operation.

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

LED fixtures were installed in Virginia Tech’s Perry Street Parking Garage which opened in august, 2010. LED fixtures were also installed for the Upper Chicken Hill Parking Lot Improvements project completed in summer, 2010.

To view an article highlighting the sustainable features of the Perry Street Parking Garage please see: http://www.vtnews.vt.edu/articles/2010/08/082310-tcs-garageopening.html

To view specifications of the project please see: http://www.pdc.facilities.vt.edu/mediawiki/index.php/Upper_Chicken_Hill_Parking_Lot_Improvements

To view the specifications for the LED lighting please see:

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

A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):

VT campus has a 6 MW steam turbine paired with 2 coal fired and 4 natural gas boilers. Steam is produced at a pressure of 600 psi and superheated. The turbine generates more electric energy during the heating season when steam requirement in the campus is at its maximum.

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment and systems with high efficiency alternatives (e.g. building re-commissioning or retrofit programs):

Virginia Tech has developed a five year energy action plan with the ultimate goal of reducing campus-wide energy use and greenhouse gas emissions at the Blacksburg, VA main campus. Lighting upgrade projects are currently being implemented across campus, gradually replacing lights that have burned out with either a more efficient 25W tubular light or an LED tubular light. Building re-commissioning is regularly being performed on campus, occurring when older buildings that may or may not have been commissioned are revisited and the equipment is checked for performance. In addition, building automation upgrades are being implemented in buildings at Virginia Tech, where a Siemens automation system is updated as standards change. Mechanical insulation is also being upgraded to ensure heated or cooled air or water being transported does not lose its desired temperature, saving energy use behind the heated or cooled air or water.

The website URL where information about the programs or initiatives is available:

Additional documentation to support the submission:

In 2016, the Virginia Tech community held the annual event Light’s Out!/Power Down! For more information see https://vtnews.vt.edu/articles/2016/07/adm-fspowerdowngoal2016.html

The baseline year of calendar year 2013 was compared to the performance year of calendar year 2016.

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 and complete the Data Inquiry Form.