UC/CSU/CCC Sustainability Conference Cal Poly San Luis Obispo, 2008 The Best Practice Awards Program is created by the UC/CSU/IOU Energy Efficiency Partnership Program and funded under the auspices of the California Public Utilities Commission

The UC Project Management Institute is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available upon request This program is registered with the AIA-CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods and services will be addressed at the conclusion of this AIA CONTINUING EDUCATION

WIRELESS LIGHTING CONTROLS RETROFIT UC Berkeley Lighting Design / Retrofit Best Practice Award Raul Abesamis Energy Engineer Physical Plant-Campus Services Photo by Rob Johnson - Copyright 2008 UC Regents

PROJECT DESCRIPTION UC Berkeley has always strived for leadership in energy efficiency, incorporating latest designs and technologies available in the industry in implementing retrofit projects Participated in wireless lighting controls pilot project funded by California Energy Commission in 2005 that resulted in over 50% energy savings The pilot was used as basis for implementing Partnership Program projects using the in two libraries where lighting is estimated to be more than 35% of building electrical use –Moffitt Undergraduate Library –Doe Main Library Photo by Rob Johnson - Copyright 2008 UC Regents

PROJECT DESCRIPTION Why focus on lighting?

PROJECT DESCRIPTION MOFFITT LIBRARY PROJECT Two floors (combination of stacks & reading desks/carrels) totaling approximately 30,000 sq. ft. Lighting in open area floors divided into bays with continuous rows of single- lamp F32T8 fixtures with optical reflectors Lights previously operated 24/7 with ON/OFF controls only through circuit breakers for each bay located in electrical closets

PROCESS MOFFITT LIBRARY PROJECT Light controllers (relays) installed at beginning of each row to independently control all ballasts in each row Total of 163 controllers installed on two floors Each controller programmed to switch ON and OFF lights based on variable library occupancy schedule Wireless gateway installed to allow scheduling changes and monitoring

PROCESS MOFFITT LIBRARY PROJECT Light controllers (relays) installed at beginning of each row to independently control all ballasts in each row Total of 163 controllers installed on two floors Each controller programmed to switch ON and OFF lights based on variable library occupancy schedule Wireless gateway installed to allow scheduling changes and monitoring

ACCOMPLISHMENTS Completed August 2007 Savings/economics: Project cost $22, MWh/year $0.09/kWh 2.5 year simple payback before incentives Instant payback after incentives MOFFITT LIBRARY PROJECT

PROJECT DESCRIPTION DOE LIBRARY PROJECT 40 high-output 8’ fluorescent lights above skylights Lights operated 24/7, controlled only from breakers located in attic space

PROCESS DOE LIBRARY PROJECT Controllers installed in each two-lamp high output fixture Lights programmed to operate only after sunset and only when library is occupied

RESULTS DOE LIBRARY PROJECT Completed January 2008 Estimated savings = 70 MWh per year 0.9 year simple payback before incentives (instant payback after incentives)

TECHNICAL INFORMATION The controllers are installed inside the light fixtures by removing the ballast cover, removing two wire nuts that connect he ballast and connecting the controller between the main power and the ballast. Each controller has two independent relays with 5 amps capacity Universal voltage (120/277 volts) Lighting maintenance technician can install a controller in 5-10 minutes

BARRIERS/LESSONS LEARNED Power supply for controller initially had problems in 277-volt application. High voltage spikes for 277-volt application. Corrected with replacement of controller film resistor with wire-wound resistor (design modification) Controllers do not have internal batteries for time clock. Gateway resets clocks in controllers once in a while to maintain reasonable accuracy

BARRIERS/LESSONS LEARNED Existing fixture wiring can vary in many ways that may impact installation Involve IT department early on in project for required network connections/communications

TEAM Miguel Labon Facilities Manager, UCB Libraries Charlie Huizenga Research Specialist Lecturer / Adjunct Associate Professor UCB Center for Building Environment Zach Gentry CEO, Adura Technologies, Inc. Don Link President, Controlled Energy Alfredo Magana Lead Building Maintenance Worker, UCB Physical Plant, Support Services

CONTACT INFORMATION Raul Abesamis – , Charlie Huizenga – , Zach Gentry – ,

QUESTIONS? Please stop by the Higher Education Partnership booth for hard copies of 2007 Best Practice case studies. Or visit best_practices.htm to view an online archive of case studies. best_practices.htm This concludes the American Institute of Architects Continuing Education Systems Program. QUESTIONS?