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Downtown Street Light Retrofits

Downtown Street Light Retrofits. East Village Association Meeting July 5, 2012. Objective. Retrofit current downtown post top street lights with new broad spectrum technology - Enhanced Safety/Security - Reduced Light Pollution/Light Trespass

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Downtown Street Light Retrofits

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  1. 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

  3. Background • ~35,000 roadway “cobra” street lights arecurrently 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

  4. SD Post Top Working Group • A collaborative effort being led by the Cityof San Diego with representation from thefollowing 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

  5. 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

  6. Enhanced Safety/Security

  7. Reduced Light Pollution/Trespass • Proposed luminaires are “full cut-off”; nolight emitted above horizontal • Uplight Current: U4/U5 Proposed: U1/U2 • Backlight Current: B2/B3 Proposed: B1/B2 • Glare Current: G2/G3 Proposed: G1/G2

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

  9. Reduced Maintenance Costs • 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

  10. Future Reduced Electricity Cost • Gateway (dual-head) Street Lights

  11. Future Reduced Electricity Cost • Standard Post Top Street Light

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

  13. 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 10th Avenue • Will also retrofit cobra street lights at intersections • Targeting pilot installation in October 2012

  14. Funding • City of San Diego funding pilot demonstration • Considering several funding options forcity-wide deployment - Available EECBG project rebate funds - SDG&E On-Bill Financing - CEC low interest (3%) loan - QECB’s • Nocost to PBID; short-term maintenancesavings and longer-term electric rate savings

  15. Current Status • Secured approval to proceed from PBIDAdvisory Board and DSDP Planning Committee • Public outreach to also include East VillageAssociation 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 specificationfor City-wide procurement and Streetscape Manual

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