“Update on the Expansion of CSU’s Underground Electric System”Selection of a Street

Light Monitoring System

Presented by : Timothy R. Crabb, P.E.

Assistant Director of Electric Utility

Evaluation of Automated Street Light Monitoring System

Initial investigation into street light outages started in 2007

RFP put out by City in August, 2008

Two responses received on RFP in September, 2008

Negotiations and evaluations of responses with both companies

Discussions with current users of the systems

Received “BEST OFFER” quotes in November, 2008

Selected to pursue ROAM proposal in December, 2008

InternetInternet

Network Operations Center (NOC)

Gateway

Customer Web PortalIntelligent

Photocontrols

Cellular

How a Monitoring System works

CSU will utilize the existingCity fiber system instead ofa Cellular system

Plan for Installing Automated Street Light Monitoring

SystemInstall ROAM nodes on all Thoroughfare lighting and partial residential lighting (2000 units)

Monitor and “tweak” system to determine best practices and establish limits for monitoring parameters

Complete ROAM installation on all residential lights including decorative fixtures (3000 units in the next 6 to 24 months)

Improved Customer Service and Reliability

Reduce or eliminate need for customer interaction

Allow utility to focus manpower on other customer issues

Eliminate irritation of “Cycling lights” and “day burners”

Reduce customer concerns for lighting safety and security

Improved Information and Efficiency for CSU

“State of the Art” Monitoring System

System information and outage diagnostics

Tracking database for street light equipment

Ability to control groups of lights

“On and off” programming for all fixtures

Multi-use communication system (Capacitor Controls, AMI, …)

Improved Supplier Performance Examines lamp and fixture manufacturer performance Provided predictive data for proactive maintenance Collects data on manufacturer warranties

Environmental Impacts Eliminates “day burners” (approx. 120,000 kwh/year)

Programming “burn hours” (approx. 181,000 kwh/year)

Eliminating night patrols (approx. 80 hours/year)

Improved Asset Management/less waste in the landfill

These improvements will reduce the City’s “carbon footprint” by over 210 tons/year. This is equivalent to taking 35 cars off the road!

(based on the EPA Greenhouse Gas Emissions calculator found at “http://www.epa.gov/climatechange/emissions/ind_calculator.html”)

Justifying a Monitoring System

“What you need to know” to get an Accurate Estimate

Number and type of lights Mounting height of various types of lights Types of existing photo controls (NEMA locking, button eye, …) Location and type of any existing group controls Communication technology available in area Do you want to “own” the monitoring software? Who will do the installation of the system? Labor cost Of the possible functions of the system, what do you want it to do?

“What you need to know” to get an Accurate Estimate (cont.)

Do you want to do the project in phases or all at once? Will you be able to use the communication technology for other

projects? Do you want to have other street light maintenance done during

the installation? How will the Monitoring database be cross referenced to your

existing database? Can the Monitoring system be integrated into your current Work

Order or Work Management system (now, or in the future)?

“What you need to know” to get an Accurate Estimate (cont.)

What is the accuracy of the measurement data? If the Monitoring system will be separate, how will data be entered

into your current Asset Management system? What are the monitoring costs and license fees and what do they

specifically cover? Do you plan to “re-bulb” the light? Warranty duration for equipment being installed What do you really want to track in the database?

Cost Justification

Permanent elimination of night patrol of lights Elimination of bulb replacement (for about 5 years if you re-bulb)Elimination of photo control replacement (for about 5 years)Extended life of equipmentReduce damage caused by cycling lightsReduce damage caused by voltage problemskwh savings for eliminating “day burners”kwh savings for scheduling “on and off” time for system or group of lightskwh savings for special programs Elimination of multiple trips (use of diagnostics and asset data)Warranty replacement of failed equipmentTime management and scheduling savingsReduction in customer calls and manual work order preparationSpecial funding (environmental programs)

•657 orders in 12 months•Nodes and re-bulb will eliminate 75% of orders (for 4 to 5 years)•With Monitoring System, Customer call should go to zero!

This amount will be saved for 5 years due to bulb and control change out

Continuous savings due to elimination of night patrol and nonproductive trips

Continuous savings due to reduction in damage

At $0.10/kwh, a 400W “day burner” will cost about $0.65 additional per day!

For COCS’s system, cutting 15 minutes off each end of the lighting duration will save over 180,000 kwh/year! For the “green people” this is equivalent to reducing your carbon foot print by 120 tons.

When calculating usage, need to use “input wattage” and not “lamp wattage”

ONLY COST AFTER INITIAL INSTALLATION IS MONITORING AND LICENSING FEES

COST SAVINGS GREATER IN FIRST 5 YEARS BECAUSE OF PHOTO CONTROL AND BULB REPLACEMENT

“BREAK EVEN” POINT IS LESS THAN FIVE YEARS

Summary Separate “what you think you want” from “what you need”

Know the requirements and specifics of your system

Investigate cost savings strategies (re-bulb, phasing, communications,…)

Determine who “benefits” from the system (share cost?)

Understand the “Green” benefits of a Monitoring System

No matter what else you do to your system (LED’s, Induction Lights,…), a Street Light Monitoring System is the only way you can ensure that you know when your lights are on!

Questions?