Overall Rating Silver
Overall Score 52.43
Liaison Wesley Enterline
Submission Date Nov. 13, 2018
Executive Letter Download

STARS v2.1

University of Wisconsin-Whitewater
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 2.91 / 6.00 Wesley Enterline
Sustainability Coordinator
Facilities Planning and Management
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 111793.22 MMBtu 113018 MMBtu
Electricity from on-site renewables 144.41 MMBtu 154.85 MMBtu
District steam/hot water (sourced from offsite) 290071 MMBtu 322626 MMBtu
Energy from all other sources (excluding transportation fuels) 9679.67 MMBtu 11864.07 MMBtu
Total 411688.30 MMBtu 447662.92 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, 2013 June 30, 2014

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):

As a signatory of the American College and University President's Climate Commitment, we embarked on the task of conducting our first greenhouse gas inventory officially conducted by the institution after July 2008, when the first campus Sustainability Coordinator was hired. This was his primary task upon being hired, and using the information from Fiscal Year 2008 was most practical and relevant for the 2015 STARS report.

Since the composition of campus has changed since 2008 in a variety of significant ways, the performance year data used from Fiscal Year 2014 for our 2015 STARS report is being used as the new baseline for the 2018 STARS report across all relevant categories except Waste, due to a methodology change by the waste hauler. Since this data was collected in greater detail similar to the 2008 data and is readily available from the previous STARS report, it was the most logical data set to implement.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 3054629 Gross Square Feet 3017518 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 0.13 MMBtu / GSF 0.15 MMBtu / GSF
Source energy 0.23 MMBtu / GSF 0.25 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 6602 Degree-Days (°F)
Cooling degree days 808 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 145274 Square Feet
Healthcare space 5868 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
3356913 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
16.55 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):

State of Wisconsin Department of Administration - Division of State Facilities (DSF)
Adopted November 2006:

Thermostats: In small buildings and in exterior zones of large buildings, adjust to 68 degrees F maximum in the winter and 76 degrees F minimum in the summer. Reduce to 60 degrees F during unoccupied winter hours.

In interior variable air volume zones of large buildings, adjust to 76 degrees F minimum.

In interior constant air volume zones of large buildings, adjust to 68 degrees F maximum in the winter and 76 degrees F* minimum in the summer. Reduce to 60 degrees F during unoccupied winter hours. *(For reheat systems, subject to discharge reset control strategy and temperature setting necessary to minimize cooling and reheat.)

In vestibules, stairwells, mechanical/electrical rooms, elevator equipment rooms, unoccupied storage and similar spaces, adjust to 60 degrees F in the winter.

Dress for comfort and plan for the conditions in your working environment.

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

The area lighting LED project converted existing area lighting that used high pressure sodium and metal halide technology for the 664 fixtures that cover parking areas, sidewalks and streets. These fixtures consume 482,622 kWh per year. The LED area lighting consume 208,492.2 kWh per year at a 56.8% energy reduction for an annual savings of $21,930.40 ($0.08 per kWh).

LED lighting is currently being implemented for outdoor, building-mounted fixtures. Additionally, some interior common areas have been converted to LED lighting, although at this point it is limited and only part of remodeling projects, not an active retrofit.

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

Besides an effort to integrate daylighting in new or renovated buildings whenever possible, there is no passive solar heating systems on campus.

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

The steam supplied to the campus is provided by a large co-generation plant located a couple miles northeast of campus. The steam is provided through a combination of above-ground and underground piping to the Central Heating Plant, where it is distributed using the campus steam network. Electricity is not provided directly to the campus by this power plant, but the overall higher efficiency of the plant allows us to purchase steam at a significant discount and the plant utilizes 100% natural gas, which is a cleaner fuel mix than we would be able to provide with on-campus generation.

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):


JCI performance contract included Air Handling Unit (AHU) upgrades with the addition of VFDs, discharge air reset, and scheduling strategies. AHUs without Direct Digital Control (DDC) were also converted to DDC as appropriate. Lighting improvements include occupancy control and exit light upgrades, fluorescent fixture upgrades in UC. Water conservation measures included toilet replacement and retrofits of urinals, showerheads, and sinks. Cooling Towers VFD fans. Dishwasher at UC and two ovens at Esker replaced. VFD on CA building chilled water pump, AHU System cooling coils repiped two way valves, and AHU coil chilled water pumps removed. All motors 3 HP or larger upgraded to premium efficiency models.

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

Chilled water is not monitored on campus for GPR buildings and not reported for PR buildings.

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.