Overall Rating Gold - expired
Overall Score 67.20
Liaison Megan Butler
Submission Date May 31, 2017
Executive Letter Download

STARS v2.1

Macalester College
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 2.90 / 6.00 Nathan Lief
Facilities Director
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 41,516.68 MMBtu 36,806.12 MMBtu
Electricity from on-site renewables 0.01 MMBtu 0 MMBtu
District steam/hot water (sourced from offsite) 88,231.30 MMBtu 89,310.94 MMBtu
Energy from all other sources (e.g., natural gas, fuel oil, propane/LPG, district chilled water, coal/coke, biomass) 0 MMBtu 0 MMBtu
Total 129,747.99 MMBtu 126,117.06 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year June 1, 2015 May 31, 2016
Baseline Year June 1, 2007 May 31, 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):

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 1,425,958 Gross square feet 1,351,585 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 0.09 MMBtu per square foot 0.09 MMBtu per square foot
Source energy 0.17 MMBtu per square foot 0.16 MMBtu per square foot

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 6,010 Degree-Days (°F)
Cooling degree days 2,283 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 172,020 Square feet
Healthcare space 2,400 Square feet
Other energy intensive space

EUI-adjusted floor area, performance year:
1,830,798 Gross square feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
8.55 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):

During First Year orientation we are able to highlight energy use on campus. Students can check their energy use in residence halls from any device on the web. We host energy programming (Home Energy Squad) and digital signage about energy use.

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

Macalester College uses building automation systems and occupancy sensor to control HVAC equipment –especially in high EUI areas like laboratory spaces and studios. Within the last three years the College hired an energy manager.

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

LED lights are used in the following locations:
Wall washing recessed fixtures; Music building first floor
Monument sign illumination; corner of Grand and Macalester.
Track lighting; Olin/Rice lower level (Geology) and first floor (Smail Gallery).
Artwork recessed/pendant lighting; Campus Center
Exterior building lights; Chapel, Stadium.
Elevator lights; Leonard Center and Markim Hall.
Pendant chandeliers.Turck lounge; 2
Exterior wall pack style lights; Bigelow, Leonard Center, Heating/Chiller Plant stairs.
In-ground flag pole lights; Carnegie.
Residence hall room lighting; Dupre (in progress), Doty (future)
Art gallery lighting; Law Warschaw Gallery in Art Commons (lamps on order and will be replaced by end of summer)
Outdoor campus lighting

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

The EcoHouse uses solar-thermal to heat the DHW for the house.

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):

All of the major buildings were recommissioned in 2010.

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

Data source(s) and notes about the submission:

The other energy intensive spaces consists of food preparation spaces, kitchens, freezers, and data centers.

The other energy intensive spaces consists of food preparation spaces, kitchens, freezers, and data centers.

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.