| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 75.86 |
| Liaison | Tess Esposito |
| Submission Date | March 2, 2018 |
| Executive Letter | Download |
University of Dayton
OP-5: Building Energy Consumption
| Status | Score | Responsible Party |
|---|---|---|
|
2.60 / 6.00 |
Figures needed to determine total building energy consumption:
| Performance Year | Baseline Year | |
| Grid-purchased electricity | 270,392 MMBtu | 233,198 MMBtu |
| Electricity from on-site renewables | 48.29 MMBtu | 0 MMBtu |
| District steam/hot water (sourced from offsite) | 0 MMBtu | 0 MMBtu |
| Energy from all other sources (e.g., natural gas, fuel oil, propane/LPG, district chilled water, coal/coke, biomass) | 294,547 MMBtu | 240,398 MMBtu |
| Total | 564,987.29 MMBtu | 473,596 MMBtu |
Start and end dates of the performance year and baseline year (or 3-year periods):
| Start Date | End Date | |
| Performance Year | July 1, 2016 | June 30, 2017 |
| Baseline Year | July 1, 2008 | June 30, 2009 |
A brief description of when and why the building energy consumption baseline was adopted (e.g. in sustainability plans and policies or in the context of other reporting obligations):
July 2008 - June 2009 was the first year we have electric and natural gas data for all major accounts.
Gross floor area of building space:
| Performance Year | Baseline Year | |
| Gross floor area of building space | 4,700,984 Gross square feet | 4,059,991 Gross square feet |
Source-site ratio for grid-purchased electricity:
Total building energy consumption per unit of floor area:
| Performance Year | Baseline Year | |
| Site energy | 0.12 MMBtu per square foot | 0.12 MMBtu per square foot |
| Source energy | 0.24 MMBtu per square foot | 0.24 MMBtu per square foot |
Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:
Degree days, performance year (base 65 °F / 18 °C):
| Degree days (see help icon above) | |
| Heating degree days | 4,848 Degree-Days (°F) |
| Cooling degree days | 899 Degree-Days (°F) |
Floor area of energy intensive space, performance year:
| Floor Area | |
| Laboratory space | 1,055,346 Square feet |
| Healthcare space | 3,964 Square feet |
| Other energy intensive space |
EUI-adjusted floor area, performance year:
Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
Documentation (e.g. spreadsheet or utility records) 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 (e.g. outreach and education efforts):
The first initiative, Energy GPA, is a program that provides students in University-owned student neighborhood houses with a grade of their monthly energy use. Monthly "report cards" include electricity and gas usage and a monthly tip for energy savings. Grades are determined by comparing a house's usage against an average of that house's previous three years of energy-use data. A selected house or houses that show the best savings each month are awarded "Energy Champion" tshirts. With over 400 houses in our student neighborhood, the Energy GPA program will be a key way in which we engage students in lowering UD's overall carbon footprint.
The second initiative utilizes Housing and Residence Life's "PATH Point System," which provides students with the most points priority in housing placements, by providing students with the opportunity to watch educational videos on lifestyle changes to reduce energy usage and live more sustainably.
A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):
Some buildings are scheduled to be fully conditioned only during occupied periods (ex. 6 AM to 11 PM), depending on use patterns and function. We are currently identifying buildings that do not have nighttime setbacks and occupancy ventilation, and implementing VAV box scheduling and controls based on occupancy sensors. During the summer, one residence hall building is currently closed and only minimally conditioned to prevent mold and humidity damage. We are currently in the process of working with Housing and Residence Life to house all summer residents in one building, and employ setbacks in all other residence halls. We are also working with Housing and Res Life to identify move-out policies for all residence halls to unplug refrigerators and turn thermostats to 80F, as well as working with our building automation system to schedule rooftop units to cycle off in the summer while maintaining humidity levels.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
A major focus of the university’s green revolving fund has been to retire florescent lights in favor of LED replacement lamps. These projects have shown that it is financially prudent to replace even relatively efficient T8 lamps. Students and staff are systematically identifying building spaces where it is profitable to replace the florescent lamps and using GRF money or other funding to complete these projects. In addition to transitioning to LEDs, occupancy sensors have been installed in order to turn lights off during unoccupied periods and save energy. For several years, the university has also been replacing its high pressure sodium exterior lighting and gym lighting with LED lamps.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
N/A
A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):
The solar building at the Energy Experience Center has a ground source heat pump system that is able to heat and cool the building by exchanging heat with the ground using a series of tubes placed in vertical holes in the ground.
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment and systems with high efficiency alternatives (e.g. building re-commissioning or retrofit programs):
This past year we have worked with Heapy Engineering on retrocommissioning projects in two of our three most energy consuming buildings. These projects have focused on HVAC controls due to their large energy savings and low upfront capital cost. The newly formed Campus Energy Team has also audited a representative sample of academic buildings, residence halls, and athletic facilities in order to identify potential large-scale energy efficiency projects in lighting and HVAC controls.
The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
Facilities Management and the Hanley Sustainability Institute are in the process of reviewing our inventory of utility accounts. This is part of a large project to improve energy tracking and analysis, greenhouse gas inventories, mapping tools, and more. The data here represents the vast majority of energy consumption on campus. We are not yet able to include energy data for our student neighborhood, because we don't have enough contextual data for the baseline and performance years to make a coherent comparison. However, the ultimate goal of our utility inventory is to allow us to include small accounts like this in the future.
Facilities Management and the Hanley Sustainability Institute are in the process of reviewing our inventory of utility accounts. This is part of a large project to improve energy tracking and analysis, greenhouse gas inventories, mapping tools, and more. The data here represents the vast majority of energy consumption on campus. We are not yet able to include energy data for our student neighborhood, because we don't have enough contextual data for the baseline and performance years to make a coherent comparison. However, the ultimate goal of our utility inventory is to allow us to include small accounts like this in the future.
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.