Overall Rating Bronze - expired
Overall Score 36.07
Liaison Dr. Christopher Williams
Submission Date Jan. 31, 2020
Executive Letter Download

STARS v2.1

University of Delaware
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 4.18 / 6.00 Michelle Bennett
Sustainability Manager
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 589,219.46 MMBtu 486,392.42 MMBtu
Electricity from on-site renewables 0 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) 763,818.14 MMBtu 776,939 MMBtu
Total 1,353,037.60 MMBtu 1,263,331.42 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2017 July 1, 2018
Baseline Year July 1, 2007 July 1, 2008

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):

The baseline was adopted to align with our larger greenhouse gas inventory, GHG reduction goals and other report baseline years.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 8,448,165 Gross Square Feet 5,235,720 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 0.16 MMBtu / GSF 0.24 MMBtu / GSF
Source energy 0.31 MMBtu / GSF 0.44 MMBtu / GSF

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 4,470 Degree-Days (°F)
Cooling degree days 1,383 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 1,226,732 Square Feet
Healthcare space 13,082 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
12,640,359 Gross Square Feet

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

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):

UD is completing a trial behavior change study with a focus on energy efficiency in our General Services Building. Once the trial is complete, we will assess opportunities to roll it out to other buildings on campus.

A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):

UD ustilizes DDC based building automation systems in majority of campus buildings. Occupancy sensors,timers and other lighting controls are implement where possible.

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:

UD lighting standard is LED with 0-10V dimming where applicable

A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:

All new buildings take passive solar opportunities into account during design to meet our LEED Silver or better standards. UD also has a large density of mature trees which offer significant passive solar benefits, especially on our core campus and around The Green.

A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):


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):

UD has completed a comprehensive Facilities Condition Index, which will inform (among other initiatives) the opportunities for recommissioning and retrofit programs.

The website URL where information about the programs or initiatives is available:
Additional documentation to support 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.