Overall Rating Gold - expired
Overall Score 69.60
Liaison Sustainability Office
Submission Date Feb. 27, 2015
Executive Letter Download

STARS v2.0

University of North Carolina, Greensboro
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 2.53 / 6.00 Trey McDonald
Sustainability Coordinator
Sustainability Office
"---" 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 629,536 MMBtu 620,403.40 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 260,344.40 MMBtu 264,911.40 MMBtu
District steam/hot water 368,822.50 MMBtu 351,280.30 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 6,053,737 Gross Square Feet 4,670,562 Gross Square Feet

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 78,956 Square Feet
Healthcare space 47,184 Square Feet
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 3,851
Cooling degree days 1,480

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 3.14
District steam/hot water 1.20

Start and end dates of the performance year and baseline year (or 3-year periods)::
Start Date End Date
Performance Year July 1, 2013 June 30, 2014
Baseline Year July 1, 2005 June 30, 2006

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

A brief description of any building temperature standards employed by the institution:

Many of the buildings on campus follow occupancy schedules programmed through a Building Automation System (BAS). Temperature is controlled during unoccupied hours through upper and lower limit setpoints, depending on the season. Six (6) buildings were added to the BAS in 2013-14.
Temperature controls in the buildings are programmed to adjust space temperature setpoints at specific times of day. The setpoints and hours of occupancy were formalized in buildings controlled by the BAS through a new university policy adopted in October 2011 and phased in during spring and summer 2012. Should changes be necessary, schedules can be remotely adjusted using the BAS. Starting in 2012, thermostats in buildings not controlled via the BAS were retrofit with thermostat locks to allow Facilities to establish temperature settings for these buildings in cooling and heating seasons.

A brief description of any light emitting diode (LED) lighting employed by the institution:

As a pilot project, one Holophane Granville outdoor fixture was used to retrofit a post-mounted lighting fixture from HPS to LED near the UNCG Facilities Design and Construction office. In summer 2012, seven more Holophane Granville outdoor fixtures were retrofitted along the same pathway, with the potential to reduce electrical consumption in these fixtures up to 40%. In October 2014 the University completed the retrofit of the remaining sixteen (16) Holophane Granville post-mounted fixtures in Peabody Park.

In May 2012, UNCG replaced 55 34-watt CFLs with 19-watt LED bulbs in the Weatherspoon Art Museum, and replaced 29 150-watt incandescent bulbs with 19-watt LED bulbs in 2013.

The University continues to replace incandescent and metal halide lamps with LED where possible. This includes both outdoor light fixtures at the Elliott University Center and indoor light fixtures in the Music Building.

A brief description of any occupancy and/or vacancy sensors employed by the institution:

Occupancy sensors have been installed in many offices and bathrooms across campus. These operate on motion and infrared. Further, ambient light sensors are located in classrooms in the School of Education building.

A brief description of any passive solar heating employed by the institution:

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

A brief description of any cogeneration technologies employed by the institution:

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

In May 2013, UNCG retro-commissioned the 1100 West Market Street Building, which houses several University departments. When the Controls Shop is fully staffed with four (4) Controls Technicians, this activity is planned to resume for additional campus buildings.

A brief description of any energy metering and management systems employed by the institution:

UNCG utilizes the Vykon Energy Suite to track energy consumption and performance in multiple buildings. To communicate with these buildings and to control temperature setpoints, the university's controls team uses a Tridium Building Automation System.

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

UNCG encourages purchase of the most energy efficient appliances and electronics (EPA Energy Star). University Facilities installs high efficiency motors in new construction and when replacing existing motors, and has installed several HVAC motors with variable frequency drives (VFD) in new construction and during equipment replacement. Please see: http://facoperations.uncg.edu/tipsgoals.html

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:

Many vending machines have been de-lamped.

A brief description of other energy conservation and efficiency initiatives employed by the institution:

In June 2014, UNCG completed the replacement of the economizers on Boilers #2 and #3 in the Steam Plant. These new economizers replaced ones which were 25 years old that had several leaks repaired over the years which reduced their efficiency. The new economizers allow UNCG to use less natural gas in order to produce the same amount of steam for building heating, domestic water heating, etc.

The website URL where information about the institution’s energy conservation and efficiency initiatives is available:

Some information for this credit was received from Douglas Cato, Campus Mechanical Engineer.

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.