Overall Rating Gold
Overall Score 69.57
Liaison Cindy Shea
Submission Date Dec. 23, 2020

STARS v2.2

University of North Carolina at Chapel Hill
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 4.19 / 6.00 Cindy Register
Assist Director of Engineering Services
Engineering Services
"---" indicates that no data was submitted for this field

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 336,187,312 Kilowatt-hours 1,147,071.11 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 54,355 Kilowatt-hours 185.46 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 2,163,473 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
3,310,729.57 MMBtu

Gross floor area of building space, performance year:
19,483,802 Gross Square Feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 2,535,669 Square Feet
Healthcare space 201,325 Square Feet
Other energy intensive space 1,344,884 Square Feet

EUI-adjusted floor area, performance year:
26,302,674 Gross Square Feet

Degree days, performance year:
Degree days
Heating degree days 3,053 Degree-Days (°F)
Cooling degree days 1,919 Degree-Days (°F)

Total degree days, performance year:
4,972 Degree-Days (°F)

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period Jan. 1, 2019 Dec. 31, 2019

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

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 238,539,517 Kilowatt-hours 813,896.83 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 3,412,561 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
4,226,457.83 MMBtu

Gross floor area of building space, baseline year:
13,210,911 Gross Square Feet

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period July 1, 2002 June 30, 2003

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

The UNC Chapel Hill energy consumption baseline was adopted to be in alignment with the legislatively mandated NC Utility Savings Initiative. All state agencies, including universities, were required to reduce their energy consumption by 30% per square foot by 2015 relative to a FY 2003 baseline.


Source-site ratio for imported electricity:
3.14

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.17 MMBtu / GSF 0.30 MMBtu / GSF
Baseline year 0.32 MMBtu / GSF 0.45 MMBtu / GSF

Percentage reduction in total source energy consumption per unit of floor area from baseline:
34.50

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:

Our centralized Building Automation System (BAS) allows us to program night setback temperatures in many of our buildings. This is done by programming the controllers in a specific building to change their space temperature setpoint at a specific time of day. So, for example, a building with an occupied setpoint of 70 degrees during the day might be allowed to cool down to 65 degrees between 6pm and 6am before the heating system would turn back on. Both the temperature and the time can be remotely adjusted from our centralized energy management center.


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

LED lighting is used for an increasing number of applications on campus -- outdoor safety/way finding lights, parking decks, loading docks, building wall packs, and - because of a significant recent price drops - building corridor and office lighting.


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

The NC Botanical Garden has 31 geothermal wells, 25 of which are 500 feet deep. The system is used to heat and cool the three-building, LEED Platinum complex.


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

UNC operates a 32 MW cogeneration plant, with fluidized bed combustion and flue gas scrubbers, that simultaneously produces both steam- used for heating, humidification, domestic hot water, sterilization, and making distilled water in laboratories — and up to one-third of the campus peak electric load. Compared to standard power plants that produce 1/3 useable energy and 2/3 waste heat, UNC’s combined heat and power plant produces more than 2/3 useable energy and less than 1/3 waste heat.


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

Extensive building retro-commissioning program in effect in more than 10 million GSF of space.


Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
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