Overall Rating Bronze - expired
Overall Score 42.65
Liaison Winnie Kwofie
Submission Date April 19, 2019
Executive Letter Download

STARS v2.1

California State University, East Bay
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 2.38 / 6.00 Loralyn Perry
Energy & Utilities Manager
FDO - Energy Management
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 61,425 MMBtu 58,221 MMBtu
Electricity from on-site renewables 4,264.09 MMBtu 4,257.65 MMBtu
District steam/hot water (sourced from offsite) 0 MMBtu 0 MMBtu
Energy from all other sources (e.g., natural gas, fuel oil, propane/LPG, district chilled water, coal/coke, biomass) 66,395 MMBtu 70,661.87 MMBtu
Total 132,084.09 MMBtu 133,140.52 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year July 1, 2016 June 30, 2017
Baseline Year June 1, 2013 May 31, 2014

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):
Using AY 13/14 as baseline year because this is the first year the campus conducted an official, comprehensive GHG inventory of the university.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 2,011,416 Gross square feet 1,987,306 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 0.07 MMBtu per square foot 0.07 MMBtu per square foot
Source energy 0.13 MMBtu per square foot 0.13 MMBtu per square foot

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 2,399 Degree-Days (°F)
Cooling degree days 1,043 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 22,643 Square feet
Healthcare space 2,000 Square feet
Other energy intensive space

EUI-adjusted floor area, performance year:
2,062,902 Gross square feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
18.60 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):
EcoVox, EnergyStar Portfolio, ALC, and Alerton

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
"Lighting can be very energy intensive and the industry has come a long way to reduce one of the highest energy end uses for buildings. Following suit the University invested in retrofitting many of the fluorescent lighting fixtures in campus buildings from the inefficient T12 to T8s and installing dimmable plasma lighting in a parking lot. Many of the campus buildings have had the fluorescent tube lighting upgraded from less energy efficient t-12a; to more efficient T-8s. We are evaluating the next step in efficiency - LEDs for our classrooms, common areas and parking lots. Upgrading pathway and building lighting to LED technology Adding motion sensors where it would be appropriate to have unused lights turn off Installing dimmable light sensors to dim lamps when ample outdoor light is available Further information can be found in the Hayward Campus Master Plan under Section 4, Sustainable Campus Framework"

A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
New roofs on North and South Science and the Library are Cool Roofs complying with the Cool Roof Rating Council (CRRC). Cool roofs are roofs that have a high solar reflectance and thermal emittance.

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

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):
"Facilities replaced three old and inefficient boilers in the following locations: Field House North Science South Science The new condensing boilers have an average Thermal Efficiency of 94%. The campus participated in both the UC-CSU Partnership Program and PG&E's Deemed Rebate Program to earn energy incentives for these projects in addition to the Therm savings."

The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:

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.