Overall Rating Gold
Overall Score 71.21
Liaison Lisa Noriega
Submission Date June 29, 2022

STARS v2.2

Yale University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 2.74 / 6.00 Lindsay Crum
Chief Manager for Sustainability Operations & Strategic Data
Yale 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 136,211,700 Kilowatt-hours
+ Date Revised: March 3, 2023
464,754.32 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 123,720,835 Kilowatt-hours 422,135.49 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 3,326,133 MMBtu
+ Date Revised: March 3, 2023
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
4,213,022.81 MMBtu

Performance year building space

Gross floor area of building space, performance year:
17,682,608 Gross square feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 1,525,190 Square feet
Healthcare space 353,873 Square feet
Other energy intensive space 1,487,290 Square feet

EUI-adjusted floor area, performance year:
22,928,024 Gross square feet

Performance year heating and cooling degree days 

Degree days, performance year:
Degree days
Heating degree days 4,897 Degree-Days (°F)
Cooling degree days 1,191 Degree-Days (°F)

Total degree days, performance year:
6,088 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:
30.18 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 174,816,480 Kilowatt-hours
+ Date Revised: March 3, 2023
596,473.83 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 161,189.09 Kilowatt-hours 549.98 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 3,742,828 MMBtu
+ Date Revised: March 3, 2023
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
4,339,851.81 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:
15,990,953 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, 2014 June 30, 2015

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

Source energy

Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.24 MMBtu per square foot 0.29 MMBtu per square foot
Baseline year 0.27 MMBtu per square foot 0.35 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:
15.95

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:
---

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

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

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

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

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

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

Additional documentation to support the submission:
The hospital is not included in the numbers above in order to align with the boundary Yale uses for STARS, although it is included in the inventory that Yale submits to The Climate Registry.
+ Date Revised: March 3, 2023

Data source(s) and notes about the submission:
The hospital is not included in the numbers above in order to align with the boundary Yale uses for STARS, although it is included in the inventory that Yale submits to The Climate Registry.

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.