Downtown Street Light Retrofits East Village Association Meeting July 5, 2012

2 Objective Retrofit current downtown post top street lights with new broad spectrum technology - Enhanced Safety/Security - Reduced Light Pollution/Light Trespass - Reduced Energy Consumption - Reduced Maintenance Costs - Future Reduced Electricity Cost

Background ~35,000 roadway “cobra” street lights are currently being retrofit to broad spectrum - ARRA grant funded project - 16 million kWh in annual energy savings - $2.2 million annual taxpayer savings - Improved visual acuity/safety/security 3

SD Post Top Working Group A collaborative effort being led by the City of San Diego with representation from the following entities: - CleanTECH San Diego - Downtown San Diego Partnership - City of San Diego Traffic & Maintenance - City of San Diego DSD - SDG&E - Clanton & Associates (lighting consultants) - - City of San Diego Street Light Maintenance 4

Proposed Pilot Trial Three Technologies (Induction; LED; CMH) Six Manufacturers Mid-Block Standard and Gateway fixtures Compare Photometric Performance Stakeholder Survey on Light Quality/Aesthetics 5

Enhanced Safety/Security 6

Reduced Light Pollution/Trespass Proposed luminaires are “full cut-off”; no light emitted above horizontal Uplight Current: U4/U5 Proposed: U1/U2 Backlight Current: B2/B3 Proposed: B1/B2 Glare Current: G2/G3 Proposed: G1/G2 7

Reduced Energy Consumption “Standard” Fixture Incumbent HPS Proposed Broad Spectrum Lamp 150 watts Lamp 71 watts Ballast 23 watts Ballast 0 watts System 173 watts System 71 watts (-59%) “Gateway” Fixture (dual-headed) Incumbent HPS Proposed Broad Spectrum Lamp (2) 500 watts Lamp (2) 142 watts Ballast (2) 104 watts Ballast 0 watts System 604 watts System 142 watts (-76%) 8

Reduced Maintenance Costs 9 Lamp Life Expectancy: Installed High Pressure Sodium 20,000 hours (plus ballast) Ceramic Metal Halide 30,000 hours (plus ballast) LED 50,000+ hours (no ballast)* Induction 100,000 hours (no ballast)* (Note: LED measures to 70% of initial light output Induction measures to 50% lamp failures) Maintenance Ramifications: - Over a 10-year period, going to Induction or LED is expected to eliminate at least two (2) lamp change-outs and (2) ballast change-outs - Upon retrofit this will represent immediate savings to PBID - Currently reviewing the data to quantify this anticipated savings

Future Reduced Electricity Cost Gateway (dual-head) Street Lights 10 HPSV (a) TOTALLED (a) TOTAL lampballastSYSTEM lampballastSYSTEM wattage UDC (250 watt) LS2 $ 5.851UDC (250 watt) LS2 $ DWR Bond $ 0.542DWR Bond $ 0.13Case 1 3Commodity $ 5.293Commodity $ 1.24Variance: 1-lamp Total Cost for one (1) lamp: $ Total Cost for one (1) lamp: $ 2.76 $ (8.92)-76%

Future Reduced Electricity Cost Standard Post Top Street Light 11 HPSV (a) TOTALLED (a) TOTAL lampballastSYSTEM lampballastSYSTEM wattage UDC (150 watt) LS2 $ 3.601UDC (250 watt) LS2 $ DWR Bond $ 0.312DWR Bond $ 0.13Case 2 3Commodity $ 3.033Commodity $ 1.24Variance: 1-lamp Total Cost for one (1) lamp: $ 6.94 Total Cost for one (1) lamp: $ 2.76 $ (4.18)-60%

Proposed Pilot Site 12 ● Standard/Single Headed Light Pole (Type C) ● Gateway/Double Headed Light Pole (Type A)

Pilot Installation 48 mid-block post top luminaires retrofit in total 2 Standard poles/3 Gateway poles per manufacturer Bucket truck and traffic control will be required ~1-2 hours to refit each luminaire Worst Case – 2 days per block on 10 th Avenue Will also retrofit cobra street lights at intersections Targeting pilot installation in October

Funding City of San Diego funding pilot demonstration Considering several funding options for city-wide deployment - Available EECBG project rebate funds - SDG&E On-Bill Financing - CEC low interest (3%) loan - QECB’s No cost to PBID; short-term maintenance savings and longer-term electric rate savings 14

Current Status Secured approval to proceed from PBID Advisory Board and DSDP Planning Committee Public outreach to also include East Village Association and Centre City Advisory Committee Seek input from Downtown Stakeholders on preferred aesthetic options for the 6 fixture choices Order the fixtures and conduct the Pilot Evaluation Conduct stakeholder Field Survey during Pilot trial Use pilot learnings to establish specification for City-wide procurement and Streetscape Manual 15