Overall Rating	Gold
Overall Score	71.43
Liaison	Ken Foster
Submission Date	March 4, 2022

STARS v2.2

Vassar College
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	3.34 / 6.00	Cora Kenfield Director of Sustainability Office of Sustainability

"---" indicates that no data was submitted for this field

Part 1. Site energy use per unit of floor area

Performance year energy consumption

Electricity use, performance year (report kilowatt-hours):

	kWh	MMBtu
Imported electricity	19,676,125 Kilowatt-hours	67,134.94 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	0 Kilowatt-hours	0 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	212,618 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, performance year:

279,752.94 MMBtu

Performance year building space

Gross floor area of building space, performance year:

2,480,000 Gross square feet

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	77,309 Square feet
Healthcare space	1,523 Square feet
Other energy intensive space	10,150 Square feet

EUI-adjusted floor area, performance year:

2,647,814 Gross square feet

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	5,490 Degree-Days (°F)
Cooling degree days	1,014 Degree-Days (°F)

Total degree days, performance year:

6,504 Degree-Days (°F)

Performance period

Start and end dates of the performance year (or 3-year period):

	Start date	End date
Performance period	July 1, 2020	June 30, 2021

Metric used in scoring for Part 1

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:

16.24 Btu / GSF / Degree-Day (°F)

Part 2. Reduction in source energy use per unit of floor area

Baseline year energy consumption

STARS 2.2 requires electricity data in kilowatt-hours (kWh). If a baseline has already been established in a previous version of STARS and the institution wishes to continue using it, the electricity data must be re-entered in kWh. To convert existing electricity figures from MMBtu to kWh, simply multiply by 293.07107 MMBtu/kWh.

Electricity use, baseline year (report kWh):

	kWh	MMBtu
Imported electricity	22,979,126 Kilowatt-hours	78,404.78 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	0 Kilowatt-hours	0 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	239,040 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, baseline year:

317,444.78 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

2,400,000 Gross square feet

Baseline period

Start and end dates of the baseline year (or 3-year period):

	Start date	End date
Baseline period	July 1, 2004	June 30, 2005

A brief description of when and why the energy consumption baseline was adopted:

It is also when the baseline year for the Greenhouse Gas Emissions was adopted.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.11 MMBtu per square foot	0.17 MMBtu per square foot
Baseline year	0.13 MMBtu per square foot	0.20 MMBtu per square foot

Metric used in scoring for Part 2

Percentage reduction in total source energy consumption per unit of floor area from baseline:

15.52

Optional Fields

Documentation 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:

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A brief description of energy use standards and controls employed by the institution:

Vassar’s Energy policy specifies temperature set-points during a 24 hour period based on expected occupancy and use of all buildings. Temperatures are also adjusted based on measurements of outdoor temperature, and are computer controlled for each building.

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:

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A brief description of co-generation employed by the institution:

1 mw of cogeneration capacity on natural gas boiler

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:

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Website URL where information about the institution’s energy conservation and efficiency program is available:

http://buildingsandgrounds.vassar.edu/policies/conservation.html

Additional documentation to support the submission:

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Data source(s) and notes about 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 or simply email your inquiry to stars@aashe.org.