Overall Rating Gold
Overall Score 65.07
Liaison John Alejandro
Submission Date Oct. 22, 2024

STARS v2.2

University of San Diego
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 2.74 / 6.00 Milena LaBarbiera
Sustainability Coordinator
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 22,621,063 Kilowatt-hours 77,183.07 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 1,359,770 Kilowatt-hours 4,639.54 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 64,963.50 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
146,786.10 MMBtu

Performance year building space

Gross floor area of building space, performance year:
3,450,288 Gross square feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 23,769 Square feet
Healthcare space 4,528 Square feet
Other energy intensive space 5,218 Square feet

EUI-adjusted floor area, performance year:
3,512,100 Gross square feet

Performance year heating and cooling degree days 

Degree days, performance year:
Degree days
Heating degree days 1,649 Degree-Days (°F)
Cooling degree days 871 Degree-Days (°F)

Total degree days, performance year:
2,520 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, 2022 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:
16.59 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 22,885,145.40 Kilowatt-hours 78,084.12 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 1,547,883.05 Kilowatt-hours 5,281.38 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 64,314.33 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
147,679.82 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:
3,330,288 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, 2018 June 30, 2019

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

The baseline year aligns with the performance year in USD's most recent (2021) AASHE STARS submittal and is therefore useful to track progress over time. The baseline year is also the most recent data prior to the COVID-19 pandemic.


Source energy

Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.04 MMBtu per square foot 0.09 MMBtu per square foot
Baseline year 0.04 MMBtu per square foot 0.09 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:
4.33

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:

Since 2022, the University has updated and refined a several edudational and informational programs to help educate the community on the benefits of reducing USD's overall energy consumption. Programs and activities include USD's Green Resident Program, Green Office Certification Program, the annual Student Sustainability Summit, presentations to USD Student Government and classes, and collaborating with sustainability-focused class projects.


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

USD's building management system utilizes standard, seasonal temperature settings for every building on campus, which can be viewed here: https://www.sandiego.edu/sustainability/documents/USD%20Temperature%20Standards.pdf.


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

As USD continues to implement its 2021 Energy Master Plan, lighting replacements continue to occur across campus. During FY23, lighting projects included parking garages, and future projects include interior lighting replacement in classrooms and residence halls.


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

USD's Energy Master Plan includes a host of building mechanical upgrades related to heating hot water and domestic hot water units, HVAC units, and heat pumps. The university has undertaken a retro-commissioning effort of all of its buildings, so that a variety of energy efficiency issues can be identified and corrected.


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