UC Davis Smart Lighting
Initiative:
Lighting the Way to a Sustainable 2nd Century
CHESC - July 2011
Background
• UC Davis - 73 million
kWh/year for lighting
• California Public
Utilities Commission
adopted a plan to
reduce electrical
lighting consumption
60–80% by 2020
• Energy efficiency is
key GHG reduction
strategy
Average California Commercial Electricity Consumption
by End Use*
Other 8%
Office Equipment 7%
Lighting (Interior &
Exterior)
35%
Ventilation 12%
Refrigeration 13%
Cooling 15%
*Source: California Energy Commission, California Commercial End-Use Survey, 2006
Project Goals
• Reduce lighting energy consumption 60% below
business as usual by 2015
• Unique opportunity to link CLTC programs with
campus need to reduce energy consumption and
greenhouse gas emissions
• Highlight UC Davis as a sustainability leader
• Create a reference site for others
Metal Halide Exterior Lighting, Robert Mondavi Institute for Wine and Food Science
HID Wall Packs, Robert Mondavi Institute for Wine and Food Science
3 AM
Fluorescent Office Lighting , Robert Mondavi Institute for Wine and Food Science
Campus Box Office
Campus Lighting Initiatives
• Upgraded fixtures in parking structures expected to
save $77,000 annually
• CLTC has installed 15 demonstrations of energyefficient lighting and controls technologies on
campus
• Lighting demonstrations have saved UC Davis
more than 300,000 kWh
• Lighting demonstrations also have saved more than
200,000 pounds of carbon emissions
Successes to Date
• Parking lot lighting and retrofit program
• Statewide Energy Partnership Program (SEPP)
lighting retrofit projects
• Lighting energy efficiency efforts in campus
LEED-qualifying buildings
• Campus design standards revised to promote
lighting energy efficiency goal
• Roughly 10 percent of goal already achieved in
past 3 years—“only” 50% left
Core Technologies
• High efficacy light sources such as LEDs
• Dynamic occupancy/vacancy controls
• Integrated daylight harvesting systems
• Reduced lighting levels where appropriate
• Dimming systems
• Wireless technologies to avoid the expense of
rewiring and asbestos abatement
• User education
• Work with CLTC to select others ready
for prime time
Adaptive LED Parking Structure Luminaires, South Entry Parking Structure
Stairwell Lighting, Mrak Hall
Corridor Lighting, Bainer Hall
Integrated Office Lighting System, Wireless Integrated Photosensor and Motion Sensor controls
Bi-level Switching Controls, UC Davis Office of Research, UC Davis
Early Wins
• Common Spaces
– Stairwells
– Mechanical spaces
– Elevators
– Restrooms
– Hallways and corridors (NEXT!)
– Recommissioning lighting controls in
existing buildings
Non-technical Solutions
• Building management
– Hours of operation
– Occupancy
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Parking lot management – hours of operation
Vending machine lighting
Bulb replacement programs
User education – creating a culture of
sustainability
• Incentive programs
Potential Savings
• 34.7 million kWh/year = $3.0 million/year
• Additional energy savings from reduced heat load
• Electrical system upgrades delayed
• Replacement of burned out lamps $100,000 per
year
• Disposal of fluorescent bulbs $25,000 per year
• Potential savings of carbon offsets of $105,000 to
$525,000 or more per year (10,500 metric tons)
Budget
• Scoping level estimate - $39 million
• $4 million currently available from Statewide
Energy Partnership Program
• Reminder debt-financed for 15 years from
energy savings
• Other potential sources of funding
– Project partners
– Future expansion of SEPP funding
Implementation Challenges
• Over 1,200 buildings on UC Davis campus
• Building stock varies greatly age spanning over
100 years
• Facility type highly diverse
• Current fire and safety regulations encourage
additional lighting
• The speed of technology
• Impacting people’s “personal environment”
• Verification and monitoring by CLTC
Questions?