Overall Rating Platinum
Overall Score 86.82
Liaison Richard Demerjian
Submission Date March 28, 2018
Executive Letter Download

STARS v2.1

University of California, Irvine
OP-5: Building Energy Consumption

Status Score Responsible Party
Complete 4.40 / 6.00 Matt Gudorf
Campus Energy Manager
Facilities 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 145,814 MMBtu 482,027 MMBtu
Electricity from on-site renewables 21,580 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) 1,293,509 MMBtu 1,292,959 MMBtu
Total 1,460,903 MMBtu 1,774,986 MMBtu

Start and end dates of the performance year and baseline year (or 3-year periods):
Start Date End Date
Performance Year Jan. 1, 2016 Dec. 31, 2016
Baseline Year Jan. 1, 2008 Dec. 31, 2008

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 university installed a combined heat and power plant in 2007. This installation drastically changed the energy delivered to the campus, from predominantly grid delivered electricity to predominantly natural gas delivery. Selecting 2008 provides a solid baseline where efficiency efforts can be measured without drastic fuel switching issues appearing in the tabulation.


Gross floor area of building space:
Performance Year Baseline Year
Gross floor area of building space 11,064,125 Gross Square Feet 8,827,965 Gross Square Feet

Source-site ratio for grid-purchased electricity:
3.14

Total building energy consumption per unit of floor area:
Performance Year Baseline Year
Site energy 0.13 MMBtu / GSF 0.20 MMBtu / GSF
Source energy 0.16 MMBtu / GSF 0.32 MMBtu / GSF

Percentage reduction in total building energy consumption (source energy) per unit of floor area from baseline:
49.60

Degree days, performance year (base 65 °F / 18 °C):
Degree days (see help icon above)
Heating degree days 1,244 Degree-Days (°F)
Cooling degree days 1,167 Degree-Days (°F)

Floor area of energy intensive space, performance year:
Floor Area
Laboratory space 2,084,941 Square Feet
Healthcare space 157,791 Square Feet
Other energy intensive space

EUI-adjusted floor area, performance year:
16,240,291 Gross Square Feet

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

Documentation (e.g. spreadsheet or utility records) to support the performance year energy consumption figures reported above:
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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):
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A brief description of energy use standards and controls employed by the institution (e.g. building temperature standards, occupancy and vacancy sensors):

UC Irvine uses a networked campus-wide building energy management system. Some buildings have Siemens’ Apogee® and Johnson Controls’ Metasys® systems, while laboratory buildings utilize Phoenix Controls lab air control systems. Space scheduling and run times are continually updated and evaluated by the energy management system shop according to class and event schedules. In addition to these systems Aircuity’s Optinet system is deployed in 11 lab buildings allowing for both indoor air quality control of air change rates as well as occupancy based control. With the exception of laboratory and vivarium space, building temperatures are standardized as heat to 68 and cool to 78.


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

UC Irvine has installed LED lighting throughout the campus. Campus parking lots are bi-level LED. Exterior building wall packs, can lights, landscape lighting, canopy fixtures, step lights, and pathway lighting have received LED upgrades. Campus high bay and warehouse spaces have been retrofitted with LED fixtures with occupancy sensors built into each fixture. LED lighting is now part of the campus standards and all new and all retrofitted buildings require LED lighting with T24 Part 6 compliant controls.

Most recently, the 400,000 square foot Student Center was upgraded to LED replacing 3200 light fixtures. This project reduced energy consumption by 972,000 kWh per year, and saved 670 tons of CO2e from being emitted.


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

The majority of campus buildings are designed to take advantage of our Southern California climate. The walls of our newest buildings are 12+ inches thick concrete with no interior finish. The unfinished concrete walls are designed to absorb heat during the day and radiate it to the space at night, and then at night absorb the cool night air and radiate it to the space during the day. Passive solar heating and cooling dramatically decreases the need for mechanical heating and cooling in our buildings.


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

Since mid-2007, the campus has operated a combustion turbine generating plant at its award-winning central heating and cooling plant, which provides greater than 95 percent of the heating and cooling to the core campus facilities. The cogeneration facility uses a Solar Turbines Titan combustion turbine with an available steam turbine for additional energy recovery. Emissions are tightly controlled with NOx emissions below 2 ppm by volume. The generating plant provides 81.8% of the electricity used by the campus and the heat recovery steam generator displaces more than 485,000 MMBtu of natural gas that would otherwise have been burned in conventional boilers.


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):

UCI has completed monitoring based commissioning (MBCx) for 15 buildings in the past five years. As part of the program we will install energy monitoring and metering equipment in the buildings as needed. In order to identify energy savings opportunities we need to monitor the energy used. MBCx is a systematic process for optimizing an existing building’s performance by identifying operational deficiencies and making necessary adjustments to correct the system. Emphasis is on whole building metering, database analysis and storage of energy records, and long term monitoring of projects. At the current time we are recommissioning the central plant.

The latest addition to the program is adding automated fault detection software to continuously monitor systems for energy waste. The SkySpark is now fully deployed in 12 buildings on campus and in various states of deployment in 6 more. The campus will be conducting a full deployment to all buildings as time and funding permits.


The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
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The reduction in purchased electricity from the baseline year can be attributed to the implementation of deep energy efficiency projects and the addition of 3.2 megawatts of solar power in 2015.

UC Irvine has received national and international recognition for its energy management and energy conservation programs and its outreach and engagement to peer institutions with the global community to further deep energy efficiency and climate protection goals. This includes UC Irvine's leadership in the U.S. Department of Energy's Better Buildings Challenge program, recognition by U.S. Environmental Protection Agency with a national Climate Leadership Award for its outreach and engagement in energy conservation, and international recognition of UCI's Smart Labs energy initiative.

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.