University of California, San Diego
Tier2-6: Energy Metering

UC San Diego currently has intelligent, utility-grade ION electricity meters on approximately 60% of the campus’s total electricity load, monitoring at the individual building level. These meters monitor energy and power quality, and interface with an existing PowerLogic ION Enterprise® web-enabled software system. Together, this system provides high accuracy energy and demand measurements, historical trending, web compatibility, and control capabilities. The meters have digital and analog inputs and outputs for pulse counting, equipment status/position monitoring, demand synchronization, triggering conditional energy metering, and equipment control or interfacing. In the next 3 years, UC San Diego plans to install these meters on 63 additional buildings with funding from the UC Office of the President and rebates from San Diego Gas and Electric. In addition to electric meters, the campus has BTU meters on chilled water and hot water inputs on most major buildings on campus. These meters provide 15-minute interval data on temperature, flow and BTU to a central online database. About 200 meters track lighting electricity use every minute, and provide visual monitoring to occupants (http://power.ucsd.edu). All new buildings now employ natural daylighting strategies and occupancy-based controls throughout.