Overall Rating Gold - expired
Overall Score 72.58
Liaison Tom Twist
Submission Date June 12, 2020
Executive Letter Download

STARS v2.1

Bates College
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 4.95 / 6.00 Tom Twist
Sustainability Manager
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 43,400.50 MMBtu 47,591 MMBtu
Electricity from on-site renewables 0.01 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) 103,138 MMBtu 129,324 MMBtu
Total 146,538.51 MMBtu 176,915 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2018 July 1, 2019
Baseline Year July 1, 2008 July 1, 2009

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):

Early on, there were a group of interested and progressive faculty members that wanted to start benchmarking our data. And it has been maintained since then by our energy manager.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 1,840,000 Gross square feet 1,424,808 Gross square feet

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 per square foot 0.12 MMBtu per square foot
Source energy 0.13 MMBtu per square foot 0.20 MMBtu per square foot

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 7,107 Degree-Days (°F)
Cooling degree days 465 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 118,604 Square feet
Healthcare space 11,000 Square feet
Other energy intensive space

EUI-adjusted floor area, performance year:
2,544,978 Gross square feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
7.60 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):

Our sustainability work study students conduct workshops for the dorm RAs to then educate their students within a dorm on practices such as energy efficiency and how to report over or underheated spaces, reduction in hot water use, and so on.

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

We have just installed Honeywell building sensors and controls in all of our major buildings, so that we may now employ automatic shutdown, and temp control at night or vacations. It also lets us see data on energy use from each building - something which is relatively new to us.

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

We are swapping out with T8s and LEDs as existing bulbs fail. Our two newest buildings have 100% LED lighting. This upcoming year, we will engage in a campus-wide LED retrofit.

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

Sadly, we do not have any of these strategies currently on our campus. We do employ heat recovery ventilation for our larger buildings.

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

We do not have CHP on campus.

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):

We are in the midst of an audit of our science lab hood ventilation, hoping to replace and upgrade with more efficient units.

The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
Data source(s) and notes about 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.