Overall Rating Gold - expired
Overall Score 72.78
Liaison Brandon Trelstad
Submission Date April 30, 2015
Executive Letter Download

STARS v2.0

Oregon State University
OP-8: Building Energy Consumption

Status Score Responsible Party
Complete 2.10 / 6.00 Sonja Mae
Sustainability Program Specialist
"---" indicates that no data was submitted for this field

Total building energy consumption, all sources (transportation fuels excluded):
Performance Year Baseline Year
Total building energy consumption 1,203,778.30 MMBtu 866,782 MMBtu

Purchased electricity and steam:
Performance Year Baseline Year
Grid-purchased electricity 240,562.70 MMBtu 293,280 MMBtu
District steam/hot water 0 MMBtu 0 MMBtu

Gross floor area of building space::
Performance Year Baseline Year
Gross floor area 8,957,406.95 Gross Square Feet 6,839,309 Gross Square Feet

Floor area of energy intensive space, performance year::
Floor Area
Laboratory space 2,617,804 Square Feet
Healthcare space 0 Square Feet
Other energy intensive space

Degree days, performance year (base 65 °F)::
Degree days (see help icon above)
Heating degree days 4,791
Cooling degree days 356

Source-site ratios::
Source-Site Ratio (see help icon above)
Grid-purchased electricity 3.14
District steam/hot water 1.20

Start and end dates of the performance year and baseline year (or 3-year periods)::
Start Date End Date
Performance Year July 1, 2013 June 30, 2014
Baseline Year July 1, 2004 June 30, 2005

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

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

A brief description of any building temperature standards employed by the institution:

Most of our buildings have temperatures regulated by centralized building automation systems (BAS). The BASs adjust temperature depending on hours of occupancy for the specific building, and based on actual occupancy using interior sensors.

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

A brief description of any light emitting diode (LED) lighting employed by the institution:

LED lamps are currently being used in dozens of locations on campus, usually replacing incandescent lamps. Elevators, accent lighting and some hallway and common space lighting are the most common applications.

A brief description of any occupancy and/or vacancy sensors employed by the institution:

Throughout campus, infrared (IR), ultrasonic (US), dual-techology (both IR and US) and photosensors are utilized to control lighting. Geosynchronous clocks are also used in many locations for outdoor lighting. Main application is common spaces such as kitchens, lounges, classrooms and lobbies, though a few buildings have sensors in office spaces as well. Newer buildings typically have building automation system-integrated lighting controls, but older buildings typically have stand-alone units.

A brief description of any passive solar heating employed by the institution:


A brief description of any ground-source heat pumps employed by the institution:

A ground source heat pump is used for heating and cooling the new Oldfield Animal Teaching Facility, completed in 2012. It will also cool a new university data center to come online in 2015 or 2016.

A brief description of any cogeneration technologies 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.

A brief description of any building recommissioning or retrofit program employed by the institution:

A brief description of any energy metering and management systems employed by the institution:

All building utility data is collected and evaluated centrally. Approximately 0.4 FTE is dedicated towards managing utility data, data analysis and energy management.

Additionally, many of our buildings are connected to building automation systems (BAS) that centrally manage building energy consumption.

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

A brief description of any energy-efficient landscape design initiatives employed by the institution:

Trees are used in some landscape applications to provide shade to west and south sides of buildings.

A brief description of any vending machine sensors, lightless machines, or LED-lit machines employed by the institution:

All machines are required to have miser control technology since the last renewal of the contract.

A brief description of other energy conservation and efficiency initiatives employed by the institution:

The website URL where information about the institution’s energy conservation and efficiency initiatives is available:

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 and complete the Data Inquiry Form.