| Overall Rating | Platinum |
|---|---|
| Overall Score | 86.87 |
| Liaison | Carrie Metzgar |
| Submission Date | Nov. 5, 2024 |
University of California, San Diego
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
4.22 / 6.00 |
Carly
Kupka Campus Utilities & Energy Analyst Utilities & Sustainability |
Part 1. Site energy use per unit of floor area
Performance year energy consumption
| kWh | MMBtu | |
| Imported electricity | 99,508,315 Kilowatt-hours | 339,522.37 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 3,512,850 Kilowatt-hours | 11,985.84 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 2,598,597 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
Performance year building space
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 3,006,998 Square feet |
| Healthcare space | 2,298,480 Square feet |
| Other energy intensive space | 1,759,636 Square feet |
EUI-adjusted floor area, performance year:
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 1,537.50 Degree-Days (°F) |
| Cooling degree days | 706 Degree-Days (°F) |
Total degree days, performance year:
Performance period
| Start date | End date | |
| Performance period | Jan. 1, 2023 | Dec. 31, 2023 |
Metric used in scoring for Part 1
Part 2. Reduction in source energy use per unit of floor area
Baseline year energy consumption
STARS 2.2 requires electricity data in kilowatt-hours (kWh). If a baseline has already been established in a previous version of STARS and the institution wishes to continue using it, the electricity data must be re-entered in kWh. To convert existing electricity figures from MMBtu to kWh, simply multiply by 293.07107 MMBtu/kWh.
| kWh | MMBtu | |
| Imported electricity | 46,322,227 Kilowatt-hours | 158,051.44 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 28,134 Kilowatt-hours | 95.99 MMBtu |
Stationary fuels and thermal energy, baseline year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 4,730,362 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
Baseline year building space
Baseline period
| Start date | End date | |
| Baseline period | Jan. 1, 2008 | Dec. 31, 2008 |
A brief description of when and why the energy consumption baseline was adopted:
2008 is the baseline year because the campus expanded significantly in prior years, making 2008 a good baseline for comparison to today. 2008 is also the first year for which we have third-party verified climate data.
Source energy
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.15 MMBtu per square foot | 0.19 MMBtu per square foot |
| Baseline year | 0.37 MMBtu per square foot | 0.39 MMBtu per square foot |
Metric used in scoring for Part 2
Optional Fields
A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
Utilities & Sustainability, Procurement, and Housing/Dining/Hospitality (HDH) all work together to educate faculty, staff, students and community members about energy efficiency. Examples of outreach programs include plug load reduction and shut the sash education for labs through the university Green Labs Program, ultra-low temperature freezer rebates through the Green Labs Program and Procurement, plug load reduction and energy conservation behavior change through the university's Green Office Certification program, and student outreach by the HDH EcoNauts, Utilities & Sustainability interns, and more.
Energy Dashboard URL: https://facilityservices.ucsd.edu/resources/dashboards.html
Displays data for more than 1,200 acres on the UC San Diego main campus and La Jolla Medical Center. Users can choose a specific building (“Topmost Place”) to view more detailed data or view certain building groups.
A brief description of energy use standards and controls employed by the institution:
A computerized Energy Management System connects all major campus buildings and centrally monitors and controls mechanical systems — heating, ventilating and air conditioning — based on occupancy. The programmed system reduces energy use during evenings, weekends and holidays. Precise programming reduces peak-time energy demand, maximizes conservation and allows for efficient room temperature management and long-term trending and comparative analysis. Thermostats in offices and labs are centrally controlled for efficient and accurate temperature settings. In some instances, however, office members can make slight manual adjustments to these controls if the workspace is too warm or cool.
View additional information about room temperature settings in campus buildings: https://facilityservices.ucsd.edu/operations/energy.html#Room-Temperature-Settings-in-Ca
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
Three parking lots, one parking structure, the Birch Aquarium exhibit areas, and 10% of campus walkways are lit with LED light fixtures, with plans to transition all exterior lights to LED installations for both interior and exterior applications.
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:
The cogeneration plant provides 85% of the campus’s annual electricity needs. 54% of the campus’s 60 MMBtu/hr heating load is served by waste steam from the campus's cogeneration plant. Heat recovery from the cogeneration plant also drives 3 steam-expansion chillers that together provide 9,750 refrigeration tons. A 3.8 million gallon chilled water storage tank is connected to the chilled water system, and it permanently loads shifts from on peak to off peak 3 to 6 MW per day. The combined heat and power achieves 60% overall simple efficiency. The two gas turbines in the cogeneration plant use a non-ammonia catalytic emission reduction system that produces only 1.5 ppm NOx.
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
In 2022, UC San Diego received $100,000 from the UC Office of the President to implement Auxiliaries Energy Efficiency Program as part of a grant from the UC Carbon Neutrality Initiative and Global Climate Leadership Council. UC San Diego has been working on a pilot project with an auxiliary group, identifying energy efficiency and retro-commissioning opportunities, with plans to expand to the rest of campus. In unison, we have been providing utility data and concurrent analysis to the auxiliaries giving them more insight and ownership into their energy use.
Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
Note that this includes the Main Campus in La Jolla (including East Campus), but NOT the Hillcrest campus or other off-site facilities. This sum includes gas input for the onsite cogeneration plant (since UC San Diego owns the plant), electricity purchased from the utility, electricity generated by onsite solar panels, and gas purchased from the utility.
The gross floor area of building space for the performance year was adjusted from PRE-4 due to energy efficiency operations excluding some graduate and faculty/staff housing. The GSF provided for this credit was 19,491,181. View the calculations spreadsheet for more information: https://docs.google.com/spreadsheets/d/1sviLo36OHCSiUMdE0FFMUV5vjm_zh0FR/edit?usp=sharing&ouid=104925632587510143377&rtpof=true&sd=true
Points of contact for credit information:
- Carly Kupka, Campus Utilities & Energy Analyst, Utilities & Sustainability
- Michelle Perez, Energy and Sustainability Manager, Utilities & Sustainability
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.