Overall Rating Silver
Overall Score 52.66
Liaison Grace Afflerbach
Submission Date March 8, 2024

STARS v2.2

Purchase College - State University of New York
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 4.37 / 6.00 Tom Kelly
Senior Energy Manager
Facilities
"---" 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 22,935,465.70 Kilowatt-hours 78,255.81 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 135,607.40 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
213,863.21 MMBtu

Performance year building space

Gross floor area of building space, performance year:
2,557,577 Gross square feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 15,149 Square feet
Healthcare space 3,078 Square feet
Other energy intensive space 34,725 Square feet

EUI-adjusted floor area, performance year:
2,628,756 Gross square feet

Performance year heating and cooling degree days 

Degree days, performance year:
Degree days
Heating degree days 4,469 Degree-Days (°F)
Cooling degree days 1,230 Degree-Days (°F)

Total degree days, performance year:
5,699 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, 2023

Metric used in scoring for Part 1

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
14.28 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 33,636,200 Kilowatt-hours 114,766.71 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 157,390 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
272,156.71 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:
2,441,512 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, 2008 June 30, 2009

A brief description of when and why the energy consumption baseline was adopted:
Largest amount of kWh was used during this time period.

Source energy

Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.08 MMBtu per square foot 0.14 MMBtu per square foot
Baseline year 0.11 MMBtu per square foot 0.21 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:
29.52

Optional Fields 

Documentation 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:
Send campus wide emails encouraging energy conservation

A brief description of energy use standards and controls employed by the institution:
Building management systems in place to monitor and reduce energy during high peak energy days.

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
Several buildings completely retrofitted to LED. Potential project on the horizon to update several more buildings.

A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
Two projects planned, a community solar project and geothermal project.

A brief description of co-generation employed by the institution:
CHP coupled with energy storage to come online this winter.

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
Several LEED buildings on campus with new project to renovate largest EUI building on campus, the science building. Several HVAC systems updated since last report including modernizing cooling tower.

Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
---

Data source(s) and notes about the submission:
Since the baseline period, the college has updated its switchgear, the main power feed coming into the college and replacing inefficient transformers with efficient electrical and mechanical equipment. Since that time frame, the college has retrofitted and added several LEED buildings, retrofitted a good majority of its lighting systems, completely updated 4 buildings HVAC systems, updated its building management systems to provide better controls and installed a variety of variable frequency drives to create additional efficiencies on facilities related equipment across campus.

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.