| Overall Rating | Silver - expired |
|---|---|
| Overall Score | 62.46 |
| Liaison | Morgan Hartman |
| Submission Date | Jan. 31, 2020 |
University of Nebraska - Lincoln
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
3.25 / 6.00 |
Linda
Pickett Energy Engineer Automation & Energy Management |
Electricity use, performance year (report kilowatt-hours):
| kWh | MMBtu | |
| Imported electricity | 166,672,714 Kilowatt-hours | 568,687.30 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 53,996 Kilowatt-hours | 184.23 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 778,912 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
Gross floor area of building space, performance year:
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 1,006,948 Square feet |
| Healthcare space | 66,038 Square feet |
| Other energy intensive space | 443,554 Square feet |
EUI-adjusted floor area, performance year:
Degree days, performance year:
| Degree days | |
| Heating degree days | 6,353 Degree-Days (°F) |
| Cooling degree days | 1,300 Degree-Days (°F) |
Total degree days, performance year:
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:
Electricity use, baseline year (report kWh):
| kWh | MMBtu | |
| Imported electricity | 169,589,741 Kilowatt-hours | 578,640.20 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 58,672 Kilowatt-hours | 200.19 MMBtu |
Stationary fuels and thermal energy, baseline year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 748,976 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
Gross floor area of building space, baseline year:
Start and end dates of the baseline year (or 3-year period):
| Start date | End date | |
| Baseline period | Jan. 1, 2017 | Dec. 31, 2017 |
A brief description of when and why the energy consumption baseline was adopted:
We changed the baseline year to one where we have very good data records.
Source-site ratio for imported electricity:
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.09 MMBtu per square foot | 0.16 MMBtu per square foot |
| Baseline year | 0.10 MMBtu per square foot | 0.17 MMBtu per square foot |
Percentage reduction in total source energy consumption per unit of floor area from baseline:
Documentation to support the performance year energy consumption figures reported above:
A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
A brief description of energy use standards and controls employed by the institution:
The central building operating system operates in all classroom/office/lab buildings.
Where possible (mostly classroom/office) air handlers are turned off at night and on weekends. Otherwise, room thermostats go to a low-energy mode at night and on weekends. Occupancy sensors reduce HVAC use when room is unoccupied, even during normal scheduled hours of operation.
Most lab spaces have occupancy switches. By using the switch, users can reduce ventilation when lab is not occupied.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
New construction has LED lighting. The main university library recently (2019) had all fixtures with 4 ft T8 fluorescent tubes retrofitted with LED tubes. One parking garage is entirely LED, and one gym was recently converted to high-bay LED. Approximately 6 buildings per year are being retrofitted with LED tubes (4 ft T8 size) through an ongoing project. Fluorescent tubes are no longer stocked; all failed tubes are replaced with LEDs.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
One building has a ground coupled heat pump system in use for all heating and cooling needs.
A brief description of co-generation employed by the institution:
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
Five buildings have heat recovery chillers installed. These either supply chilled water and hot water to the building or supplement that supplied by the campus utility.
Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
For the full list of energy conservation initiatives go to https://sustainability.unl.edu/sustainable-practices
For the full list of energy conservation initiatives go to https://sustainability.unl.edu/sustainable-practices
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.