| Overall Rating | Gold |
|---|---|
| Overall Score | 68.35 |
| Liaison | Jessica Bast |
| Submission Date | Aug. 9, 2022 |
North Carolina State University
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
4.09 / 6.00 |
Jessica
Bast Sustainability Program Coordinator University Sustainability Office |
"---"
indicates that no data was submitted for this field
Part 1. Site energy use per unit of floor area
Performance year energy consumption
| 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
Performance year building space
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
Performance year heating and cooling degree days
| 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)
Performance period
| Start date | End date | |
| Performance period | July 1, 2019 | June 30, 2020 |
Metric used in scoring for Part 1
26.12
Btu / GSF / Degree-Day (°F)
Part 2. Reduction in source energy use per unit of floor area
Baseline year energy consumption
STARS 2.2 requires electricity data in kilowatt-hours (kWh). If a baseline has already been established in a previous version of STARS and the institution wishes to continue using it, the electricity data must be re-entered in kWh. To convert existing electricity figures from MMBtu to kWh, simply multiply by 293.07107 MMBtu/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
Baseline year building space
9,910,619
Gross square feet
Baseline 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 energy
3.14
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.16 MMBtu per square foot | 0.22 MMBtu per square foot |
| Baseline year | 0.17 MMBtu per square foot | 0.34 MMBtu per square foot |
Metric used in scoring for Part 2
34.94
Optional Fields
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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.
• 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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Data source(s) and notes about the submission:
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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 or simply email your inquiry to stars@aashe.org.