Overall Rating Silver
Overall Score 51.15
Liaison Nicole Gaetjens
Submission Date May 31, 2017
Executive Letter Download

STARS v2.1

Mills College
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 3.25 / 6.00 Nicole Gaetjens
Sustainability Coordinator
Campus Facilities
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 17235.57 MMBtu 19094.90 MMBtu
Electricity from on-site renewables 16.65 MMBtu 0 MMBtu
District steam/hot water (sourced from offsite) 39552.80 MMBtu 54517 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 56805.02 MMBtu 73611.90 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2015 June 30, 2016
Baseline Year July 1, 2008 June 30, 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):

Baseline is when reporting began and first climate action plan was developed.


Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 955269 Gross Square Feet 955269 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 0.06 MMBtu / GSF 0.08 MMBtu / GSF
Source energy 0.11 MMBtu / GSF 0.13 MMBtu / GSF

Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:
18.97

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 2106 Degree-Days (°F)
Cooling degree days 215 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 8000 Square Feet
Healthcare space 1165 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
1031599 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
23.72 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):
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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):
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A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
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A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:

The newly constructed LEED buildings, the Lorri I. Lokey Graduate School of Business and the Betty Irene Moore Natural Sciences Building, employ passive daylight techniques by utilizing large areas of glazing that filter UV and heat gain.


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):
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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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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.