Overall Rating Gold
Overall Score 74.69
Liaison Tess Esposito
Submission Date Feb. 9, 2022

STARS v2.2

University of Dayton
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 3.42 / 6.00
"---" indicates that no data was submitted for this field

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 77,238,417 Kilowatt-hours 263,537.48 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 1,613,737.25 Kilowatt-hours 5,506.07 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 312,987.90 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
582,031.45 MMBtu

Gross floor area of building space, performance year:
5,511,406 Gross square feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 1,170,165 Square feet
Healthcare space 0 Square feet
Other energy intensive space 0 Square feet

EUI-adjusted floor area, performance year:
7,851,736 Gross square feet

Degree days, performance year:
Degree days
Heating degree days 5,022.20 Degree-Days (°F)
Cooling degree days 1,403.80 Degree-Days (°F)

Total degree days, performance year:
6,426 Degree-Days (°F)

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period July 1, 2019 June 30, 2020

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
11.54 Btu / GSF / Degree-Day (°F)

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 83,489,669 Kilowatt-hours 284,866.75 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 296,848 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
581,714.75 MMBtu

Gross floor area of building space, baseline year:
5,077,962 Gross square feet

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period July 1, 2012 June 30, 2013

A brief description of when and why the energy consumption baseline was adopted:
See: OP-2

Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.11 MMBtu per square foot 0.20 MMBtu per square foot
Baseline year 0.11 MMBtu per square foot 0.23 MMBtu per square foot

Percentage reduction in total source energy consumption per unit of floor area from baseline:
11.25

Documentation to support the performance year energy consumption figures reported above:
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A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
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. 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:
The university continues to retrofit buildings with efficient LED lighting and other new energy equipment. From 2017-2020 UD, along with the DP&L Retrocommissioning Program, completed retrocommissioning projects across all university buildings.

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:
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 co-generation employed by the institution:
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A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
The university wass an active participant in DP&L's rebate programs while they existed, especially the retrocommissioning program, which has saved millions of kWh in campus buildings since 2017. Student groups like the Campus Energy Team also participate in projects like these through the Green Revolving Fund.

Website URL where information about the institution’s energy conservation and efficiency program is available:
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Additional documentation to support the submission:
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Data source(s) and notes about the submission:
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