Overall Rating Silver
Overall Score 49.46
Liaison Margaret Bounds
Submission Date March 2, 2018
Executive Letter Download

STARS v2.1

Connecticut College
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 3.33 / 6.00 Margaret Bounds
Assistant Director of Sustainability
Office of Sustainability
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 54261.19 MMBtu 58197.35 MMBtu
Electricity from on-site renewables 0 MMBtu 0 MMBtu
District steam/hot water (sourced from offsite) 0 MMBtu 0 MMBtu
Energy from all other sources (e.g., natural gas, fuel oil, propane/LPG, district chilled water, coal/coke, biomass) 105057.85 MMBtu 102897.48 MMBtu
Total 159319.04 MMBtu 161094.83 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2016 June 30, 2017
Baseline Year July 1, 2012 June 30, 2013

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 building energy consumption baseline was adopted to align with the baseline chosen for the greenhouse gas credit. Fiscal Year 2013 was the most recent greenhouse gas inventory available.


Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 1609900 Gross Square Feet 1436000 Gross Square Feet

Source-site ratio for grid-purchased electricity:
3.14

Total building energy consumption per unit of floor area:
Performance Year Baseline Year
Site energy 0.10 MMBtu / GSF 0.11 MMBtu / GSF
Source energy 0.17 MMBtu / GSF 0.20 MMBtu / GSF

Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:
13.99

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 4927 Degree-Days (°F)
Cooling degree days 856 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 30148 Square Feet
Healthcare space 0 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
1674448 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
16.45 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):
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A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):

The College uses central controls to maintain a temperature of between 68 and 74 degrees during the heating season. Over winter break, the temperature is set-back to 58 degrees in unoccupied spaces.


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

The College has completed several lighting upgrades including converting facilities in the Athletic Center, outside lighting, and a performance hall to LEDs.


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

The College has a geothermal system that provides all of the heating and cooling of New London Hall, one of our science facilities.


A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):
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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 recently completed a project to upgrade the kitchen hoods in all dining hall kitchens to variable speed fans.


The website URL where information about the programs or initiatives is available:
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Additional documentation to support the submission:
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Data was provided by Facilities Management. Unit conversions were done using the STARS Energy Consumption Converter v1.0. Degree days were pulled from the EnergyStar Portfolio Manager.

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.