Overall Rating Gold - expired
Overall Score 67.08
Liaison Michelle Perez
Submission Date May 18, 2011
Executive Letter Download

STARS v1.0

University of California, San Diego
OP-8: Clean and Renewable Energy

Status Score Responsible Party
Complete 0.42 / 7.00 Anna Levitt
Assistant Campus Energy Manager
Facilities Management
"---" indicates that no data was submitted for this field

Option 1: Total clean and renewable electricity generated on site during the performance year and for which the institution retains or has retired the associated environmental attributes :
4,749 MMBtu

Option 2: Non-electric renewable energy generated:
0 MMBtu

Option 3: Total clean and renewable electricity generated by off-site projects that the institution catalyzed and for which the institution retains or has retired the associated environmental attributes :
0 MMBtu

Option 4: Total RECs and other similar renewable energy products that the institution purchased during the performance year that are Green-e certified or meet the Green-e standard's technical requirements and are third party verified:
44,019 MMBtu

Option 5: Total electricity generated with co-generation technology using non-renewable fuel sources :
744,658 MMBtu

Total energy consumed during the performance year :
3,356,707 MMBtu

A brief description of on-site renewable electricity generating devices :

A brief description of on-site renewable non-electric energy devices:

A brief description of off-site, institution-catalyzed, renewable electricity generating devices:

A brief description of RECs or other similar renewable energy products purchased during the previous year:

Green-e certified RECs were purchased in 2009 for 19% of the campus’s total purchased electricity. The RECs are composed primarily of biomass, wind, and solar PV.

A brief description of co-generation technologies deployed:

54% of the campus’s 60 MMBtu/hr heating load (for space heating, lab sterilization, & domestic/industrial water heating for 12 million sq. ft. of buildings) 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 (RT). A 3.8 million gallon chilled water storage tank is connected to the chilled water system, and it permanently load shifts from on peak to off peak 3-6 MW per day. The combined heat and power achieves 70% 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.

Thanks to recent regulatory authority for piping "directed biogas", efforts are underway to contract for supplies of remote sources of biogas for use in the gas turbines as a substitute for natural gas. Waste heat from the aforementioned fuel cell, which will utilize renewable methane, will power 300 tons of chilling capacity from an absorption chiller.

The website URL where information about the institution's renewable energy sources is available:

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.