Overall Rating Gold - expired
Overall Score 76.34
Liaison Elida Erickson
Submission Date March 1, 2019
Executive Letter Download

STARS v2.1

University of California, Santa Cruz
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 3.94 / 6.00 Patrick Testoni
Energy Manager
Physical Plant - Utilities
"---" indicates that no data was submitted for this field

Figures needed to determine total building energy consumption:
Performance Year Baseline Year
Grid-purchased electricity 72,912.30 MMBtu 143,105 MMBtu
Electricity from on-site renewables 1,152 MMBtu 0 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) 524,593.50 MMBtu 419,074 MMBtu
Total 598,657.80 MMBtu 562,179 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year Jan. 1, 2018 Dec. 31, 2018
Baseline Year Jan. 1, 2006 Dec. 31, 2006

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):

2006 is the first year we have complete energy data.

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 5,669,513 Gross Square Feet 4,638,824 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 0.11 MMBtu / GSF 0.12 MMBtu / GSF
Source energy 0.13 MMBtu / GSF 0.19 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 3,301 Degree-Days (°F)
Cooling degree days 10 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 1,237,297 Square Feet
Healthcare space 37,854 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
8,219,815 Gross Square Feet

Building energy consumption (site energy) per unit of EUI-adjusted floor area per degree day, performance year:
22.00 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):

The campus has several student and staff related initiatives to keep campus occupants aware of energy efficiency and sustainability practices. The Sustainability Office manages several student programs to outreach to students to save energy at their dorms, apartments, and in their work and study spaces. The student run Green Labs programs focuses on making individuals implement best energy efficiency practices in labs while the Green Office Certification program focuses on offices.

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

UCSC runs most major building systems on a demand based scheduling system, that allows large spaces to idle at lower airflow and temperature setting when unoccupied. Our campus standard for occupied spaces is a temperature range of 68-74 deg F, and when unoccupied, these spaces relax to setpoints of 60-80 F. This allows the campus to have many spaces use less energy during the regular operating hours of the buildings when unoccupied. Vacancy sensors are also used in lighting applications, and are beneficial in reducing lighting loads in hallways, bookstacks, and offices.

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

UCSC is currently replacing all major lighting systems with LED based fixtures. We have completed the upgrade of all major street and path lighting to LED, and are now moving across the campus converting buildings to interior LED lighting systems that meet the latest California Title 24 code. This includes dimming systems, as well vacancy control systems to further minimize W/sqft in our interior spaces. All new construction is being designed with LED based lighting systems where applicable, which results in LED based interior and exterior based lighting, with few exceptions.

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, e.g. combined heat and power (CHP):

UCSC installed a brand new 4.4 MW gas turbine cogen unit in August 2015. It is fully operational, and it replaces an old 2.6 MW, dual-fueled (natural gas and diesel), internal combustion engine. It was retired in December of 2013. This new engine supplies electricity and heating for hot water to the campus core facilities; primarily research facilities and has improved power reliability/security.

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):

UCSC has a systemwide energy partnership program between the major state utilities and the higher education campuses in California. This program results in a consistent series of energy efficiency retrofits to replace legacy equipment and systems with energy efficient alternatives. We also leverage our deferred maintenance and major renovation programs with this partnership, to renovate space with more energy efficient lighting, hvac, and control systems.
UCSC has implemented the latest technology in building control, as well as building analytics, and we are currently implementing control and analytics upgrades to have automated building diagnostics.

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

Scope of energy consumption includes main campus, and all satellite campuses (lower campus, 2300 Delaware, Mt. Hamilton, Coastal Science Campus, etc.)

HDD and CDD: data from Energy Star Protocol.

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.