Overall Rating Gold - expired
Overall Score 66.93
Liaison Meredith Moore
Submission Date May 16, 2017
Executive Letter Download

STARS v2.1

University of Illinois, Urbana-Champaign
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 4.14 / 6.00 Micah Kenfield
Sustainability Coordinator
Institute for Sustainability, Energy, and Environment
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 711,707 MMBtu 491,686 MMBtu
Electricity from on-site renewables 24,853 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) 2,997,870 MMBtu 5,619,720 MMBtu
Total 3,734,430 MMBtu 6,111,406 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2015 June 30, 2016
Baseline Year July 1, 2007 June 30, 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 University of Illinois at Urbana-Champaign adopted the baseline year of 2008, after careful consideration of data availability and accuracy. Information dating back to 2005 is not very reliable.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 21,625,434 Gross Square Feet 20,113,569 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 0.17 MMBtu / GSF 0.30 MMBtu / GSF
Source energy 0.24 MMBtu / GSF 0.36 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 5,527.50 Degree-Days (°F)
Cooling degree days 1,367.80 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 1,760,708 Square Feet
Healthcare space 84,225 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
25,409,677 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
21.31 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):

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

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

LEDs are in use at KCPA, Talbot Lab, ARC, ESB, McKinley and other buildings

A variety of types of LEDs are in place including downlighting, exterior canopy lighting and wall packs.

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

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

Campus burns natural gas and coal to create steam for most energy needs on campus. These boilers have electric turbines attached to them so that the steam co-generates electricity that can offset the purchase of additional electricity for campus.

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):

The retrocommissioning process on the Urbana campus is focused on reviewing and improving building mechanical systems, while maintaining or improving occupant comfort.

Engineers undertake a thorough investigation of available building documentation, energy usage history, and similar pertinent data, while conducting meetings with building staff.
Field technicians and tradesmen gather data regarding operating conditions, sensor accuracy, equipment condition, and historic maintenance data from the field and current maintenance staff.
The composite teams discuss findings and then look to restore mechanical systems to their original design while implementing energy saving improvements.
The teams take the lead in making small changes and recommending larger capital projects, which require more funding, to Engineering or Maintenance for augmenting and sustaining the building's energy saving strategies.
Building system control experts implement modern methods of control, monitor energy usage after changes, review actual metered data, and verify the savings.

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 and complete the Data Inquiry Form.