Overall Rating Silver - expired
Overall Score 55.87
Liaison Ian Johnson
Submission Date July 29, 2014
Executive Letter Download

STARS v2.0

Colorado College
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 3.25 / 6.00 Mark Ferguson
Campus Energy Manager
Purchased Utilities
"---" 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 171,429 MMBtu 211,420.81 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 50,562 MMBtu 61,883.24 MMBtu
District steam/hot water 120,867 MMBtu 149,537.57 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 176,469.43 Gross Square Metres 174,290.30 Gross Square Metres

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 18,192.73 Square Metres
Healthcare space 0 Square Metres
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 6,128
Cooling degree days 794

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 3.14
District steam/hot water 1

Start and end dates of the performance year and baseline year (or 3-year periods)::
Start Date End Date
Performance Year July 1, 2012 June 30, 2013
Baseline Year July 1, 2007 June 30, 2008

A brief description of when and why the building energy consumption baseline was adopted:
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A brief description of any building temperature standards employed by the institution:

Colorado College employs the following temperature standards:
-During heating season occupied hours, the target building temperature is 71 degrees for academic, administrative and residential areas.
-During heating season unoccupied hours, the target building temperature is 65 degrees for academic, administrative and residential areas.
-During cooling season occupied hours, the target building temperature is 76 degrees for academic, administrative and residential areas.
-During evenings, weekends and holidays, the temperature will default to unoccupied settings. Holidays include Thanksgiving & Winter Breaks.
-Research facilities and labs requiring specific setpoints are exempt from this policy and will be managed on a case by case basis by Facilities Services. Exemption requests can be submitted via the Work Order Request form online.
-Spaces scheduled for special events through the campus reservation system will be programmed as occupied.
-Standard occupied hours for academic and administrative spaces are 6 a.m. to 6 p.m.
-Standard occupied hours for residential areas are continuous, except during holidays.


A brief description of any light emitting diode (LED) lighting employed by the institution:

Colorado College has installed both interior and exterior LED lighting technology in many areas across campus, which include the following: the walkway lighting for Packard Hall, the walkway lighting for the Tiger Trail steps to Stewart Field, the walkway pole lighting for Cutler walkway to Cascade, the walkway pole lighting at the intersection south of Tutt Library, the exterior door lighting north side of Cossitt Hall, and the interior main hallway lighting Cossitt Hallway. The entire interior and exterior of the Spencer Center, which will be undergoing renovations until August of 2014, will be lit by LED's upon the projects completion.


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

Colorado College employs various occupancy sensor applications to manage occupancy and/or vacancy sensors. There are currently motion sensors that facilitate lighting in Barnes Science Center, Tutt Science Center, the Mathias Residence Hall bathrooms, and the Palmer Hall classrooms and bathrooms. Recently, the College integrated motion and thermal sensing to adjust air changes in campus laboratories.


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

CC does not employ passive solar heating.


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

CC does not employ ground-source heat pumps.


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

CC does not employ cogeneration technologies.


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

The college employs an Campus Energy Manager who holds a professional engineer license and who is certified through the Association of Energy Engineers as a Certified Building Commissioning Professional. The Campus Energy Manager performs ongoing building recommissioning throughout the campus. He also performs commissioning on the new and renovation projects.


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

The college uses utility metering to capture total energy use. It then uses its building automation systems to capture energy use at a building level using electrical and thermal metering at the building level. The building automation system records electrical use on 15 minute intervals and thermal use by hour. CC uses the building automation system to schedule equipment in its buildings.


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

Colorado College employs many efforts to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives. For example, during the remodel of the Worner Center in 2010, the college replaced the dishwasher for the main dining hall with the highest efficiency model available. Th replacement has led to a 70% saving on energy and water over the previously existing dishwasher.

Beginning in 2012, as part of its Managed Print Initiative, the Information Technology Department scaled down the number of printing, faxing, scanning,and copying devices on campus and installed a smaller number of highly-efficient, multi-user printers. By cutting back the number of devices on campus from 449 to 145, the college estimates that the project has resulted in a 50% energy saving, or 255,626 kWh/year. In another effort to cut back on electricity use, the Information Technology Department over the last four years has consolidated many of the servers on campus into four large, energy efficient devices known as VM clusters, which are capable of hosting over eighty servers a piece. This initiative has cut down the number of servers on campus from over one hundred down to forty.


A brief description of any energy-efficient landscape design initiatives employed by the institution:
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A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:
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A brief description of other energy conservation and efficiency initiatives employed by the institution:

Occupancy Monitoring for Computer Labs
The Information Technology Department has installed Verismic software, a technology that manages the sleep and power off settings of computers in all computer labs on campus. The department's DIrector of User Services estimates that the installation has reduced 70% of the electricity used on lab computers.

Spencer Center High Performance Building Design
The Campus Energy Manager has been very involved in the design of the Spencer Center Renovation to insure the buildings energy performance aligns with CC’s sustainability goals. Some highlights of the buildings high performance design are an R‐27 envelope assembly, variable refrigerant flow water source heat pump system, LED lighting, and an interconnected PV system. For example, the LED lighting system will operate at 0.3W/SF while the minimum code requirement is 1.0 W/SF.

Barnes Fume Hood Project
This year Facilities Services has been working on a project to update 27 year old fume hoods with air flow monitoring to insure proper airflow for differing sash positions. To improve energy performance in Barnes CC is replacing the pneumatic controls on the supply air and room exhaust with direct digital controls (DDC). These new controls will allow CC to apply more sophisticated logic to each lab and reduce air changes during unoccupied times. The system will also allow the College to operate the room exhaust and fume hood exhaust as a coordinated system to insure proper lab ventilation.

Worner Solar Thermal
The Worner Solar Thermal Project is the first application of solar thermal hot water collectors on campus. The project is going to use solar hot water to preheat/heat domestic hot water serving Worner Center. The system is intended to study the feasibility of meeting campus wide domestic water demands during the summer. Favorable system performance and operation could allow for shut down of high temperature hot water generation at the central plant during the summer.

Net‐Zero Synergy House
The Synergy house at 1018 N. Weber is the location of the College's first net‐zero building. This project is designed to give students a prototype to study and discuss as the College move closer to carbon neutrality. The project has already added electric water and space heating to the house. In addition a state of the art web based thermostat has been added allowing students to monitor and manage the house remotely. A PV system will be added in the spring.

Packard Auditorium HVAC Controls Upgrade
The HVAC system serving the Packard Auditorium utilized outdated pneumatic controls and operated 24/7. This project replaces those controls with new DDC controls. The new controls will enable CC to schedule equipment operation for the space. One feature added to the new controls is demand control ventilation. The use of new sensors enables CC to maintain excellent indoor air quality and save energy.

Armstrong Auditorium CO2 Sensor
This project adds demand control ventilation to Armstrong’s auditorium. Demand control ventilation uses CO2 sensors to measure the amount of CO2 in the space and modulate the outside air damper to maintain optimal air quality levels. It saved energy by reducing the amount of outside air the system is required to condition when air quality is good.


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

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.