Overall Rating Gold
Overall Score 68.35
Liaison Jessica Bast
Submission Date Aug. 9, 2022

STARS v2.2

North Carolina State University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 4.09 / 6.00 Jessica Bast
Sustainability Program Coordinator
University Sustainability Office
"---" indicates that no data was submitted for this field

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 137,676,613 Kilowatt-hours 469,752.60 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 94,058 Kilowatt-hours 320.93 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 2,070,311 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
2,540,384.53 MMBtu

Gross floor area of building space, performance year:
16,142,883 Gross Square Feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 1,608,372 Square Feet
Healthcare space 149,447 Square Feet
Other energy intensive space 1,895,101 Square Feet

EUI-adjusted floor area, performance year:
21,553,622 Gross Square Feet

Degree days, performance year:
Degree days
Heating degree days 2,745 Degree-Days (°F)
Cooling degree days 1,768 Degree-Days (°F)

Total degree days, performance year:
4,513 Degree-Days (°F)

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period July 1, 2019 June 30, 2020

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

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 224,635,318 Kilowatt-hours 766,455.71 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 938,979 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
1,705,434.71 MMBtu

Gross floor area of building space, baseline year:
9,910,619 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:

NC Senate Bill 668 helped with the designation of the energy baseline.


Source-site ratio for imported electricity:
3.14

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.16 MMBtu / GSF 0.22 MMBtu / GSF
Baseline year 0.17 MMBtu / GSF 0.34 MMBtu / GSF

Percentage reduction in total source energy consumption per unit of floor area from baseline:
34.94

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:

The Energy Management team has implemented a ULT Freezer Energy Efficiency Rebate program. Laboratory grade ultra low temperature freezers operate at around -80℃, and conventional models can use as much energy as a house. Over the past few years, freezer manufacturers have developed new technologies that can reduce energy consumption by more than 75 percent without sacrificing performance or reliability. Because high efficiency freezers still have a higher price tag than conventional freezers, this program provides financial incentives for researchers to replace aging, inefficient freezers with high efficiency models. The University Sustainability Office, along with various campus partners, also host Energy Week. During Energy Week, events are open to the NC State community to increase visibility of the university’s energy use, research and opportunity to shape a clean energy future.


A brief description of energy use standards and controls employed by the institution:

As detailed in the Sustainability Standard Operating Procedures, the university temperature standards to reduce energy consumption from heating and cooling NC State's buildings: 2.4.4 Heating and cooling set points
• Set heating and cooling set points to minimize energy use while
maintaining occupant comfort.
• Set temperatures for occupied space to temperatures that range from 68°F
to 71°F for heating and 72°F to 75°F for cooling.
• Set unoccupied building setback features through the building automation
system to range from 55°F to 60°F for heating and 80°F to 85°F for
cooling.
• Set Heating, Ventilation and Air Conditioning (HVAC) occupancy
schedules through discussions with Facilities Operations and Facilities
Liaisons. In general, the setback schedule takes effect when the majority
of the building is unoccupied. During setback periods, utilize override push
button applications where available.
• Exceptions to HVAC occupancy schedules include special areas such as
libraries, animal care units or research facilities that require constant or
specific temperatures.
• Facilities Operations evaluates requests for temperature set point and
occupancy schedule exemptions on an individual basis.
• Facilities Operations utilizes the most energy efficient means of supplying
heating or cooling for approved off-hour/holiday requests.
• Use window air conditioners only in areas that lack central cooling or
proper air balance, and operate the units consistent with energy
conservation.
• Report areas that are too cold or too hot to the Facilities Customer Service
Center.


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

NC State utilizes highly-efficient LED (light-emitting diode) lighting where feasible. From parking decks and new construction to renovations and retrofits, the university is saving energy through this innovative technology. In late 2019, Biltmore Hall and Pulp and Paper labs recently underwent a complete lighting upgrade. New energy-efficient LED lighting has been installed in these buildings as part of an energy-saving partnership between NC State Energy Management and the College of Natural Resources. This was the first time Energy Management upgraded an entire academic building with new light fixtures, replacing about 1,500 outdated lights with LEDs over the course of five months.


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

In January of 2019, NC State brought online 6.5 megawatts (MW) of combined heat and power (CHP) on Centennial Campus. This newest system combined with the original 11 MW CHP system installed in 2012 brings the university to a total of 17.5 MW of (CHP).


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

To replace inefficient ultra low temperature (ULT) freezers, the Energy Management team is incentivizing researchers to upgrade freezers through a ULT Freezer Energy Efficiency Rebate program.


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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