| Overall Rating | Gold |
|---|---|
| Overall Score | 72.29 |
| Liaison | Jonna Korpi |
| Submission Date | Sept. 11, 2024 |
University of Minnesota, Duluth
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
3.27 / 6.00 |
Jonna
Korpi Sustainability Director UMD Sustainability |
Part 1. Site energy use per unit of floor area
Performance year energy consumption
| kWh | MMBtu | |
| Imported electricity | 37,629,996 Kilowatt-hours | 128,393.55 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 94,960 Kilowatt-hours | 324.00 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 347,476 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
Performance year building space
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 838,160 Square feet |
| Healthcare space | 14,133 Square feet |
| Other energy intensive space | 63,961 Square feet |
EUI-adjusted floor area, performance year:
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 9,277 Degree-Days (°F) |
| Cooling degree days | 342 Degree-Days (°F) |
Total degree days, performance year:
Performance period
| Start date | End date | |
| Performance period | July 1, 2021 | June 30, 2022 |
Metric used in scoring for Part 1
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 | 39,863,795 Kilowatt-hours | 136,015.27 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 | 341,357 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
Baseline year building space
Baseline period
| Start date | End date | |
| Baseline period | Jan. 1, 2007 | Dec. 31, 2007 |
A brief description of when and why the energy consumption baseline was adopted:
We used 2007 as it was the first year the campus greenhouse gas emissions inventory was calculated.
Source energy
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.14 MMBtu per square foot | 0.22 MMBtu per square foot |
| Baseline year | 0.15 MMBtu per square foot | 0.24 MMBtu per square foot |
Metric used in scoring for Part 2
Optional Fields
A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
UMD adopted a Campus Temperature Policy that guides efforts to conserve energy and maintain occupant comfort. Buildings are ramped down in off-hours and weekends to conserve energy, and occupants are invited to power down over long weekends and semester breaks.
A brief description of energy use standards and controls employed by the institution:
UMD has a Building Systems Control Center, and uses building control systems both from Siemans and Johnson Control companies. The BSAC staff revise and control the temperature schedule each year, based on occupancy hours.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
The UMD campus uses LED lighting in both interior (lecture halls, classrooms, elevators and safety/Exit signs) and exterior (street, path, and parking lot lighting). Full campus conversion to LEDs is in process, making use of a 2018 whole-campus lighting retrofit study after being put on hold due to COVID and should now be completed in 2025.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
The Bagley Classroom uses passive solar heating (it was designed to meet Passive House standards) Large, triple pane, south facing windows provide the building with plenty of natural sunlight as well as passive solar heating during the winter months. Additional natural lighting is provided by solar tubes in the ceiling. The building has an airtight envelope, allowing just 0.47 air changes per hour (as opposed to 5.0 for a typical home). Structurally Insulated Panels (SIP), produced with 100% recycled material in a South Dakota factory, surround the building; the panels are thick and have few thermal breaks where heat loss and condensation can occur. More info at: https://sustainability.d.umn.edu/bagley-outdoor-classroom
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:
Higher Education Asset Protection and Rehabilitation (HEAPR) dollars are used to update building systems each budget cycle In addition, campus Repair and Rehabilitation dollars are used for smaller energy upgrade projects (air handler replacements, LED upgrades, etc.) or building recommissioning where all heating, ventilation and air conditioning systems (HVAC) are inspected to ensure they are operating correctly, and within the original design specifications.
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:
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.