Overall Rating Gold - expired
Overall Score 66.99
Liaison Alyssa Erding
Submission Date July 18, 2014
Executive Letter Download

STARS v2.0

Macalester College
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 2.33 / 6.00 Nathan Lief
Facilities Director
"---" indicates that no data was submitted for this field

Total building energy consumption, all sources (transportation fuels excluded):
Performance Year Baseline Year
Total building energy consumption 139,859 MMBtu 150,146 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 39,052.88 MMBtu 36,779.27 MMBtu
District steam/hot water 43.74 MMBtu 83.23 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 1,392,731 Gross Square Feet 1,351,585 Gross Square Feet

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 158,172 Square Feet
Healthcare space 2,400 Square Feet
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 6,102
Cooling degree days 1,177

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 3.14
District steam/hot water 1.20

Start and end dates of the performance year and baseline year (or 3-year periods)::
Start Date End Date
Performance Year June 1, 2012 May 31, 2013
Baseline Year June 1, 2012 May 31, 2013

A brief description of when and why the building energy consumption baseline was adopted:

A brief description of any building temperature standards employed by the institution:

Macalester College uses a TRANE or Johnson Control building management systems. These systems schedule the ventilation and heat system to turn on and off in all of the large campus buildings.

A brief description of any light emitting diode (LED) lighting 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)

A brief description of any occupancy and/or vacancy sensors employed by the institution:

Lighting sensors are used to adjust interior lighting in the Campus Center and Markim Hall. Motion sensors are used in most buildings to turn lights on and off in lower use spaces.

A brief description of any passive solar heating employed by the institution:

A brief description of any ground-source heat pumps employed by the institution:

A brief description of any cogeneration technologies employed by the institution:

A brief description of any building recommissioning or retrofit program employed by the institution:

All of the major buildings were recommissioned in 2010.

A brief description of any energy metering and management systems employed by the institution:

Macalester College uses a TRANE or Johnson Controls building management system and metering of the dorms is done by MAMAC sensors. These systems allows Facilities Services to monitor and manipulate building's systems behavior remotely.

A brief description of the institution's program to replace energy-consuming appliances, equipment and systems with high efficiency alternatives:

As part of the ACUPCC, all appliances are energy star certified.

A brief description of any energy-efficient landscape design initiatives employed by the institution:

Energy efficiency is included in the sustainable landscaping master plan.

A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:

Vending Misers cut down the amount of electricity used in the vending machines by turning off lighting and managing compressor cooling cycles when they are not needed. Five units were installed at Macalester. These five units are expected to save $605 a year on energy costs. Furthermore, low-use machines were taken out.

A brief description of other energy conservation and efficiency initiatives employed by the institution:

Macalester College is an XCEL-energy efficiency partner.

The website URL where information about the institution’s energy conservation and efficiency initiatives is available:

2008 is baseline year; performance year is 2012-2013
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.