| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 69.87 |
| Liaison | Cindy Shea |
| Submission Date | Dec. 23, 2020 |
University of North Carolina at Chapel Hill
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
4.19 / 6.00 |
Cindy
Register Assist Director of Engineering Services Engineering Services |
"---"
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 | 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
Performance year building space
1,810,103.66
Gross square meters
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 235,571.26 Square meters |
| Healthcare space | 18,703.70 Square meters |
| Other energy intensive space | 124,943.76 Square meters |
EUI-adjusted floor area, performance year:
2,443,597.32
Gross square meters
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 1,696.11 Degree-Days (°C) |
| Cooling degree days | 1,066.11 Degree-Days (°C) |
Total degree days, performance year:
2,762.22
Degree-Days (°C)
Performance period
| Start date | End date | |
| Performance period | Jan. 1, 2019 | Dec. 31, 2019 |
Metric used in scoring for Part 1
151.39
Btu / GSM / Degree-Day (°C)
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 | 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
Baseline year building space
1,227,333.26
Gross square meters
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:
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 energy
3.14
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 1.83 MMBtu per square meter | 3.19 MMBtu per square meter |
| Baseline year | 3.44 MMBtu per square meter | 4.86 MMBtu per square meter |
Metric used in scoring for Part 2
34.50
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:
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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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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.