Overall Rating Silver - expired
Overall Score 61.14
Liaison Jeff Spoelstra
Submission Date Feb. 28, 2019
Executive Letter Download

STARS v2.1

Western Michigan University
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 2.82 / 6.00 Chris Caprara
Manager, Energy Administration
Facilities Management - Engineering
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 25,146 MMBtu 26,935.13 MMBtu
Electricity from on-site renewables 1,363 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) 720,486 MMBtu 767,497 MMBtu
Total 746,995 MMBtu 794,432.13 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 June 30, 2018
Baseline Year July 1, 2009 June 30, 2012

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):

Opted to use the three year average in order to account for seasonal variations in energy use. July-June was used because it is the universities fiscal year, and is the common time period that records are kept in.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 7,101,683 Gross Square Feet 8,000,000 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 0.11 MMBtu / GSF 0.10 MMBtu / GSF
Source energy 0.11 MMBtu / GSF 0.11 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 7,450 Degree-Days (°F)
Cooling degree days 311 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 191,917 Square Feet
Healthcare space 56,157 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
9,686,477 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
9.94 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):

See link for temperature set point policy: http://www.fm.wmich.edu/index.php/download_file/-/view/520

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

WMU is utilizing LED technology for new exterior applications, as well as certain interior applications. We have also eliminated the use of HID, incandescent, and CFL fixtures in new construction. New construction will exclusively utilize T8 fluorescent and LED.

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):

WMU utilizes 2 natural gas cogeneration turbines as part of the main campus power plant. These turbines have a combined output of approximately 11 Mw.

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 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.