Overall Rating Gold
Overall Score 72.34
Liaison Brandon Trelstad
Submission Date Jan. 4, 2024

STARS v2.2

Oregon State University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 4.72 / 6.00 Leticia Cavazos
Sustainability Program Specialist
Sustainability Office
"---" 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 75,187,438.60 Kilowatt-hours 256,539.54 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 2,424,181 Kilowatt-hours 8,271.31 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 769,394 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
1,034,204.85 MMBtu

Performance year building space

Gross floor area of building space, performance year:
996,265.20 Gross square meters

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 398,467 Square meters
Healthcare space 0 Square meters
Other energy intensive space 10,695.92 Square meters

EUI-adjusted floor area, performance year:
1,803,895.14 Gross square meters

Performance year heating and cooling degree days 

Degree days, performance year:
Degree days
Heating degree days 2,551.11 Degree-Days (°C)
Cooling degree days 243.33 Degree-Days (°C)

Total degree days, performance year:
2,794.44 Degree-Days (°C)

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:
63.32 Btu / GSM / Degree-Day (°C)

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 85,951,883 Kilowatt-hours 293,267.82 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 573,500 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
866,767.82 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:
635,392.32 Gross square meters

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:
2005 is the most recent year in which we have comprehensive energy data.

Source energy

Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 1.04 MMBtu per square meter 1.55 MMBtu per square meter
Baseline year 1.36 MMBtu per square meter 2.29 MMBtu per square meter

Metric used in scoring for Part 2

Percentage reduction in total source energy consumption per unit of floor area from baseline:
32.10

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:
Various programs target behavior change on a small scale. An updated list is covered in the Energy category of our blog: https://blogs.oregonstate.edu/ecologue/category/energy/

A brief description of energy use standards and controls employed by the institution:
Most OSU buildings have temperatures regulated by centralized building automation systems (BAS). The BASs adjust temperature depending on hours of occupancy for the specific building and, in some spaces, based on actual occupancy using interior sensors.

Buildings not on BAS systems also typically have some sort of timing for HVAC control.

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
LED lamps are currently being used in hundreds of locations on campus, usually replacing incandescent lamps, and most recently, replacing some fluorescent as well. New construction has implemented LED lighting technology for interior and exterior application.

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:
At the LEED Platinum Energy Center, electricity is generated in a gas turbine (fueled by natural gas), which then creates high quality waste heat. This waste heat is used to make steam for campus. The Energy Center provides about 40% of the electricity for campus. https://fa.oregonstate.edu/sustainability/operations/green-building/completed-construction

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:
---

Data source(s) and notes about the submission:
384.0 MMBtu were produced and used on-site at the International Living and Learning Center at OSU main campus in Corvallis to generate thermal energy.

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.