Overall Rating Gold - expired
Overall Score 68.19
Liaison Ian Johnson
Submission Date July 14, 2017
Executive Letter Download

STARS v2.1

Colorado College
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 4.49 / 6.00 Mark Ferguson
Campus Energy Manager
Purchased Utilities
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 49,158.06 MMBtu 61,883.24 MMBtu
Electricity from on-site renewables 1,984 MMBtu 0 MMBtu
District steam/hot water (sourced from offsite) 107,748.63 MMBtu 149,537.57 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 158,890.69 MMBtu 211,420.81 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2015 June 30, 2016
Baseline Year July 1, 2007 June 30, 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):

The baseline was adopted for the academic period leading up to the college signing the ACUPCC in 2009.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 189,013 Gross Square Metres 186,016 Gross Square Metres

Source-site ratio for grid-purchased electricity:

Total building energy consumption per unit of floor area:
Performance Year Baseline Year
Site energy 0.08 MMBtu / GSM 0.11 MMBtu / GSM
Source energy 0.14 MMBtu / GSM 0.19 MMBtu / GSM

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 5,885 Degree-Days (°C)
Cooling degree days 939 Degree-Days (°C)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 18,192.74 Square Metres
Healthcare space 0 Square Metres
Other energy intensive space

EUI-adjusted floor area, performance year:
2,458,753 Gross Square Metres

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
5.26 Btu / GSM / Degree-Day (°C)

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):

Environmental sustainability is part of the college mission, core values, and strategic initiatives. Campus sustainability council works to increase communication about achieving high performance building standards on new projects.

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

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 Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies 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 was undergoing renovations until August of 2014, is now lit by LED's. CC has newly installed LED lights in the Honnen Ice Arena, Schlessman Pool, Cossitt rooms, the El Pomar auxillary gyms, the El Pomar racquetball courts, and in many of the exterior walkway lights around campus.

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

CC does employs passive solar heating with its solar thermal array on the roof of the Worner Student Center.

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

CC does not employ cogeneration technologies.

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 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.

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 or simply email your inquiry to stars@aashe.org.