Overall Rating Gold
Overall Score 65.28
Liaison Asheen Phansey
Submission Date March 30, 2018
Executive Letter Download

STARS v2.1

Babson College
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 3.75 / 6.00 Asheen Phansey
Director of Sustainability
President's Office
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 71,588.29 MMBtu 77,159.94 MMBtu
Electricity from on-site renewables 38.60 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) 77,329.29 MMBtu 114,495.96 MMBtu
Total 148,956.18 MMBtu 191,655.90 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, 2005 June 30, 2006

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):

Babson uses 2005-2006 energy consumption as its STARS baseline since it is the baseline for Babson College's Sustainability and Climate Action Plan as well as for Babson's submission to ACUPCC.


Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 1,794,741 Gross Square Feet 1,764,929 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 0.08 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:
16.72

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 6,070 Degree-Days (°F)
Cooling degree days 1,052 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 5,260 Square Feet
Healthcare space 0 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
1,834,416 Gross Square Feet

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

Documentation (e.g. spreadsheet or utility records) to support the performance year energy consumption figures reported above:
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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):

Babson Unplugged:
Before every Thanksgiving and winter break, the Sustainability Office partners with Residence Life and HR to engage building occupants to unplug electronics, ensure windows are closed, lights are off, and thermostats are turned down.

This is an ongoing initiative and was most recently run during the 2017-2018 winter break.


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

Occupancy sensors are installed in all new construction as well as in some retrofitted parts of campus on an ongoing basis. Recent renovation with LEDs includes Park Manor Central in 2016.


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

Babson is transitioning to LED lights across campus on an ongoing basis, as spaces are renovated. For example, during the summer of 2016, classrooms in Olin Hall were retrofitted with LED lighting.

All new construction is fully LED.


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

Babson has been systematically working through its buildings to update its HVAC systems, controls, lighting, and to transition from oil to natural gas for heating.

Projects include retro-commissioning of the Executive Conference Center, installation of gas lines to buildings previously using fuel oil, lighting retrofits across campus, implementation of set points and building turn-downs, new boilers and furnaces, etc.

This effort is ongoing since at least 2010. A recent example, from spring 2017, is high-efficiency chillers that were installed in the campus center.


The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
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FY17 performance year: Grid-purchased electricity includes electricity from on-site renewables, estimated to 11,324 kWh in generation from PMW solar. The energy from all other sources (excluding transportation fuels) is 733,584 therms of NG and 28,797.30 gallons of heating oil.

Degree days data: Babson uses KBED station at DegreeDays.net for degree days data.

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.