LED STREETLIGHTS OVERVIEW Update on current technology and progress - - PowerPoint PPT Presentation

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LED STREETLIGHTS OVERVIEW Update on current technology and progress - - PowerPoint PPT Presentation

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LED STREETLIGHTS OVERVIEW Update on current technology and progress in Massachusetts September 21, 2016 LED OUTDOOR APPLICATIONS LED High Pressure Sodium COBRA HEAD POLE MOUNT

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LED STREETLIGHTS OVERVIEW

Update on current technology and progress in Massachusetts

►September 21, 2016

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www.ma-eeac.org LED Streetlights Overview

LED OUTDOOR APPLICATIONS

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POLE MOUNT GAS STATION CANOPY LIGHTING BOLLARDS

COBRA HEAD

LED High Pressure Sodium

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www.ma-eeac.org LED Streetlights Overview

TECHNOLOGY COMPARISON

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Technology Average Efficacy (lumens/watt) Color Temperature Range °K Color Rendering LED 120+ Excellent Induction 80 Good High Pressure Sodium 75 Poor Metal Halide 60 Fair Mercury Vapor 50 Fair

►LEDs are typically at least 50% more efficient than the

technologies they replace

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www.ma-eeac.org LED Streetlights Overview

LUMEN MAINTENANCE IS IMPORTANT

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►Light output degrades over time – 4175 hrs/yr is typical ►The lamp should be replaced at 65% of initial output

40% 50% 60% 70% 80% 90% 100% 15,000 30,000 45,000 60,000 75,000 90,000 % rated lumen output Hours of Operation Metal Halide High Pressure Sodium Induction LED Some technologies degrade faster than others

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www.ma-eeac.org LED Streetlights Overview

STREETLIGHT 10 YEAR OPERATING COST COMPARISON

►Typical cobra head streetlights ►Includes fixture cost, electricity, and maintenance

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$- $500 $1,000 $1,500 $2,000 $2,500 $3,000 $3,500

Cost per Fixture Per Fixture Light Output LED High Pressure Sodium Metal Halide Low Medium High

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www.ma-eeac.org LED Streetlights Overview

IMPROVED CONTROLS

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►Traditional Streetlight Control:

− Photocell with lights on from dusk-dawn

  • 4,175 annual full load hours

►New LED control capability

− Scheduled Dimming - after 10 pm in neighborhoods

  • 3,737 annual full load hours
  • Saves ~11% over traditional controls

− Scheduled Off – during late night hours

  • 2,715 annual full load hours
  • Saves 35% over traditional controls

− LED controls can be used to account for lumen degradation

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Source: National Grid RI streetlight tariff

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www.ma-eeac.org LED Streetlights Overview

ADVANCED FEATURES

►Networked LED streetlights can:

− Self-report maintenance issues − Track and report energy use − Allow for fixture tuning to meet local needs

  • Cambridge MA programmed light levels by neighborhood

through LED dimming controls

►Additional Options

− Extend cellular coverage − Detect / triangulate gunshots − Identify parking spaces / issue tickets − Mark evacuation routes

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www.ma-eeac.org LED Streetlights Overview

NIGHTTIME LIGHTS AND HEALTH

►Increased interest in impacts of night

light on human health and the environment

►Any light sources can have issues ►LEDs present challenges and offer

solutions

►Issues include:

− Glare can impact vision − Blue light can have health effects − Over-illumination disrupts sleep − Light trespass impacts the night sky and neighbors

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LED Streetlights in Brooklyn Are Saving Energy but Exhausting Residents

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www.ma-eeac.org LED Streetlights Overview

CHOOSE THE RIGHT COLOR FOR THE APPLICATION

− Los Angeles streetlight conversion improved visibility and reduced crime rate − Lamps with warm color temperatures minimize health impacts and are suitable for residential areas

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HPS CCT=2200 K Cool white LED CCT=4000 K Warm white LED CCT=2700 K High Pressure Sodium LED

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www.ma-eeac.org LED Streetlights Overview

STREETLIGHT RATES

►Streetlight energy use is not metered ►Flat rates established by technology and

wattage

− Different rates for utility vs municipal owned lights due to maintenance costs

  • Maintenance is built into the rate for utility owned
  • For Municipally owned, town/city provides maintenance and

pays utility only for energy in flat rate

►“Typical Rate”

►250 watt nominal high pressure sodium cobra head

= $102.31/year*

− * National Grid, 2010 company owned roadway rate

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www.ma-eeac.org LED Streetlights Overview

LED STREETLIGHT RETROFIT RESULTS

►LED streetlight retrofits deliver 50-80% energy

savings

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0% 20% 40% 60% 80% 100%

Energy Savings

City Los Angeles, CA Boston, MA Portland, OR Cambridge, MA Streetlights Replaced (n) 150,000 38,838 55,100 7,000 Annual Savings $ 5,300,000 $ 4,250,000 $ 2,000,000 $ 500,000 Additional savings from advanced controls

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www.ma-eeac.org LED Streetlights Overview

BARRIERS TO LED CONVERSION

►New utility owned streetlight tariffs – under

development

►Issues with transferring ownership from utilities to

municipalities

►Towns may not have the $$ for purchase ►Towns may not want maintenance responsibility ►Citizen concerns about LED technology

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www.ma-eeac.org LED Streetlights Overview

LED STREETLIGHT CONVERSIONS IN MA

►Cape Light Compact and Unitil (Fitchburg) have

retrofitted all streetlights to LED

►The City of Boston (Eversource) is working towards

replacement of all 64,000 electric lights by 2017

►Big Dig 25,000 tunnel lights are scheduled for

replacement with LEDs

►National Grid territory: many municipal owned

conversions are happening through ESCOs

►Eversource-WMECO territory: opportunity for upgrades ►Opportunities for company owned streetlights pending

rate approval

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THANK YOU