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The Sustainability Tracking, Assessment & Rating System™ (STARS) is a transparent, self-reporting framework for colleges and universities to measure their sustainability performance.

Overall Rating Gold
Overall Score 77.18
Liaison Claudia Frere-Anderson
Submission Date Oct. 12, 2018
Executive Letter Download

STARS v2.1

University of Washington, Seattle
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 3.84 / 6.00 Claudia Frere-Anderson
UW Sustainability
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 1,072,251 MMBtu 950,296 MMBtu
Electricity from on-site renewables 197 MMBtu 0 MMBtu
District steam/hot water (sourced from offsite) 0 MMBtu 0 MMBtu
Energy from all other sources (excluding transportation fuels) 1,799,055 MMBtu 1,684,283 MMBtu
Total 2,871,503 MMBtu 2,634,579 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year Jan. 1, 2017 Dec. 31, 2017
Baseline Year Jan. 1, 2005 Dec. 31, 2005

A brief description of when and why the building energy consumption baseline was adopted (e.g. in sustainability plans and policies or in the context of other reporting obligations):

The adopted 2005 baseline year is consistent with the greenhouse gas reduction baseline year.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 21,028,221 Gross Square Feet 13,805,254 Gross Square Feet

Source-site ratio for grid-purchased electricity:

Total building energy consumption per unit of floor area:
Performance Year Baseline Year
Site energy 0.14 MMBtu / GSF 0.19 MMBtu / GSF
Source energy 0.25 MMBtu / GSF 0.34 MMBtu / GSF

Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 4,583 Degree-Days (°F)
Cooling degree days 392 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 1,093,558 Square Feet
Healthcare space 1,267,012 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
26,043,252 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
22.16 Btu / GSF / Degree-Day (°F)

Documentation (e.g. spreadsheet or utility records) 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 (e.g. outreach and education efforts):

A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):

The UW employs building temperature standards as follows:
- For capital projects, the Facilities Services Design Guide (FSDG) provides building temperature guidelines for new construction, renovations and remodel projects. FSDG states design space temperatures in capital projects shall be as established by City and State Energy Codes. Previous Seattle Energy Codes required interior design temperatures to be a maximum of 70F for heating and a minimum of 78F for cooling. FSDG states general use buildings with mechanical cooling will be cooled to 78F unless further restricted by City or State Energy Codes. FSDG requires listing all space heating temperature setpoints that differ from 68F. FSDG states unoccupied spaces shall be heated to minimum 40F for freeze protection. FSDG states hydronic heating system shall be on a reset schedule, normally resetting heating hot water down from 180F to 140F when outside air temperature rises from 20F to 70F. FSDG states reheat coil heating hot water temperature is normally set at 140F. FSDG states night setback temperatures shall not drop below 55F. FSDG states mechanical and electrical rooms shall be ventilated so space temperature does not exceed 90F.
- Operationally, building temperatures are adjusted by each building's own control system. UW's building control systems include direct digital control (DDC) systems by several manufacturers, pneumatic control systems, or standalone controls. DDC systems are remotely monitored from a central server location.

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

The UW employs LED lighting fixtures in these Seattle campus buildings:
1: Paccar Hall
2. Dempsey
3. Stevens Court (Community Center Conference Room)
4: HUB (building interior and surrounding pathway lighting)
5. Mercer Hall (corridors at apartment entrances & exterior pathways)
6, Plant Services Bldg. (Facilities Services Training Center)
7. Alder District Market
8. Poplar Apartments
9. Mary Gates Hall

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

The UW employs passive solar heating as follows:
- Many campus buildings constructed of brick or concrete have large thermal masses that store thermal energy
- Several buildings have south-facing glass with light shelves that allow direct solar gain in winter
- Molecular Engineering's ceilings and wall cavities are filled with phase change material that increase thermal mass and store thermal energy. Solar chimneys with turbine ventilators naturally ventilate office spaces.

A brief description of co-generation employed by the institution, e.g. combined heat and power (CHP):

The UW employs cogeneration by combusting natural gas to produce steam, which produces electricity in a steam turbine generator prior to distribution of steam to the campus for heating.

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment and systems with high efficiency alternatives (e.g. building re-commissioning or retrofit programs):

The UW employs building recommissioning or retrofits as follows:
- energy engineers auditing buildings recommend system and controls modifications
- HVAC airflow rebalancing has been performed in several buildings, with an ongoing project to rebalance other buildings

The website URL where information about the programs or initiatives is available:

Additional documentation to support the submission:

Part I values include the contiguous Seattle, Tacoma and Bothell campuses. The Metropolitan Tract, Northwest Hospital and Medical Center and "outlying" properties are not included.

Gross Scope 2 GHG emissions from other sources reported as zero because for the purposes of STARS reporting, we only include contiguous properties that UW owns and manages. Facilities such has Harborview Medical Center and others located throughout the city and may use steam are not owned by UW and thus their GHG emissions are tracked and reported through other agencies or the property owners.

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.