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Street Light Conversion City of North Bay. 25 Jan 2013. City’s Conservation & Green Plan. In 2008 City of North Bay established 5 Year Green Targets to reduce energy consumption from the 2007 baseline Targets: Electricity consumption by 5% / year Natural Gas used by 3% / year
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Street Light Conversion City of North Bay 25 Jan 2013
City’s Conservation & Green Plan In 2008 City of North Bay established 5 Year Green Targets to reduce energy consumption from the 2007 baseline Targets: Electricity consumption by 5% / year Natural Gas used by 3% / year Fuels consumed by 5% / year
Energy Conservation Analysis of Annual Electricity Consumption by the City consistently identifies street lights as the 2nd or 3rd largest user In 2010 Street Lights consumed 3.32 Million kW
Background Background System owned by the City & maintained by North Bay Hydro (LDC) High Pressure Sodium (HPS) fixtures are utilized in the system City of North Bay pays the LDC based on the hourly electricity price plus the Global Adjustment on the drawn wattage of the fixtures (light bulb and ballast) plus the distribution costs as determined by the LDC (& approved by the OEB) Rates for street lights are approved by Ontario Energy Board City funds the system through Municipal Tax Collection Street lights in older section of the system do not meet ESA standards for street lighting
Why Change Street Lights Drivers HPS Street Lights are at the end of their useful life Financial Increasing operational costs Increasing maintenance costs Capital budget and life cycle financial consideration Conservation Reduce Electricity Consumption Environmental Sustainability
Why Change Street Lights (Drivers Continued) Sustainability The project supports the Goals and Objectives of sustainability and the Green Initiatives of the City of North Bay because it involves the replacement of old street lights with luminaires that: Are more energy efficient than the current HPS fixtures; Produce better quality of light (white light versus yellow light); Have a lower carbon footprint with consideration of the manufacturing process, longer life and the recycling capability; Lower maintenance costs Upgrade the street light system to meet ESA requirements City wide
Moving the Project Forward Steps Internal Research Pilot Projects and Sampling Initiation, completion, and evaluation of Engineering Study Technology Decision Development of RFP Tendering Evaluation of submitted RFP(s) Field Test of winning proposal RFP for Installation Rebuild system to meet new requirements Install
Internal Research Investigation of various technologies Survey of other communities Discussions with various suppliers and distributors Discussions and evaluation with LDC Establishment of over arching objectives Discussions with light experts
Colour Rendering Improved night visualization of objects
PILOT FIELD TESTS Induction, LED’s, Retrofits Over 40 different lights were tested Initial results favoured Induction Lighting but there were concerns with the uniformity of the light distribution While the Pilot Field Tests were underway Technology of LED’s was improving while costs were decreasing Applying Moore’s Law from solid state technology and the computing industry the effectiveness of light output of LED’s was improving dramatically while cost was dropping quickly At this point the City concluded that a more detailed analysis of technology, short listing of qualified suppliers and financial modeling was necessary to ensure the optimum results
Engineering Study Initiation, Completion, and Evaluation of Engineering Study which included the following key factors Utilisation of the current system (pole spans and fixture heights and road configurations) Life span Adequacy of light (intensity & distribution) criteria as per ANSI/IESNA RP-8-00 Quality of light and colour Energy consumption Initial Capital and Maintenance Costs through life of the fixtures Retrofit compatibility Recycling & environmentally sensitive by-products
Product Evaluation Criteria Technology Decision Engineering study concluded that LED’s offered the optimum solution for the City considering the established infrastructure system of pole spacing, fixture heights and roadway design. LED’s met RP-8-00 requirements for all representative cases. LED’s offered a better estimated life cycle cost
Development of RFP Critical Considerations: Product Suitability and Technical Product Light Performance Experience and Warranty Financials Deliverables and Environmental
Product Evaluation Criteria Developed 5 over arching criteria for evaluation Product Suitability and Technical Product Light Performance Experience and Warranty Financials Deliverables and Environmental
Product Evaluation Criteria Product Suitability and Technical Compliance
Product Evaluation Criteria Product Light Performance
Product Evaluation Criteria Experience and Warranty
Product Evaluation Criteria Financial Evaluation Capital Cost Life Cycle Costs Annual Electricity Costs based on 2011 electricity rates Estimated Maintenance Costs over 5, 10 and 15 years Estimated Life Expectancy based on suppliers information and municipalities limited experiences (conservative estimates for replacement) Warranties Estimated financial implications of environmental impacts
Product Evaluation Criteria Financials
Product Evaluation Criteria Deliverables and Environmental
Field Test Residential Roadway LED Fixtures HPS Fixtures
LED STREET LIGHT PROJECT Lesson’s Learned Utilize experts early in the project to optimize fixture evaluation processes Pre-qualification of fixtures and suppliers reduces overall cost of the project If capital available complete the project as quickly as possible to realize the electricity consumption savings sooner and realize economies of scale. Utilize installers with proven experience and resources committed to completing the project in a timely fashion to reduce administrative/supervisory costs
LED STREET LIGHT PROJECT Predominant Street Type HPS Fixure LED Fixture ID Watts* ID Watts** Residential / Urban 70 96 65 73 Collector Streets 150 185 90 102 Arterial Streets 200 241 105 119 Arterial Special 250 300 130 147 * Watts Includes fixture plus ballast in the case of HPS Fixtures ** Watts Includes fixture plus driver in the case of LED Fixtures
LED STREET LIGHT PROJECT Predominant Street Type HPS Fixure LED Fixture ID No. of Fixtures ID No. of Fixtures (Watts) (Watts) Residential / Urban 70 3650 65 3650 Collector Streets 150 1125 90 1125 Arterial Streets 200 700 105 692 Arterial Special 250 92 130 100 Total 5567 5567
LED STREET LIGHT PROJECT In Summary: Estimated Total Costs $ 2,800,000 Start Date October 17, 2011 Completion Date April 30, 2013 Reduction in Connected kW 37% Projected Annualized Savings $ 225,000 /year based on 2011 costs $ 281,000/year based on 2013 costs Expected Payback 13 years based on 2011 costs OPA Incentives Approximately $60,000 Funding City’s Capital Budget $3 MM over 2 yrs.