Case Study: Harrisburg Connected LED Streetlights Project

SALC September 18-21 Hollywood, CA
IES Street and Area Lighting
Conference
City of Harrisburg: combining controls
with an LED replacement project
Wayne S. Martin
City Engineer
SALC September 18-21, 2016 Hollywood, CA

City of Harrisburg:
Combining controls with an LED replacement project
An overview of Harrisburg’s
recently completed controls and
LED streetlight conversion project.
Despite becoming the default
combination in many developed
countries, installing controls in
tandem with LED streetlight
upgrades is relatively new in the
US.
This presentation follows the
course of the project from the
initial business case to the
operation of the completed
system, and examines the benefits
and technology considerations
encountered along the way.

Your presenter
Wayne S. Martin, P.E., Esq. is the City
Engineer for the City of Harrisburg
Pennsylvania responsible for the day-to-day
operations of city streets, bridges,
streetlights, traffic lights and sidewalks.
Appointed by Mayor Eric Papenfuse in 2014, Mr. Martin is
also responsible for the design and construction
administration of capital improvement projects and the
oversight of all transportation-related issues in the capital
city. His background as a structural engineer preparing
designs for transportation structures throughout the
world is complimented by his experience as an attorney
representing owners, design professionals, and
contractors in a variety of legal issues including: drafting
contracts, providing claim avoidance advice, bid protests
and disputes, commercial disputes and workouts,
litigation, and alternate dispute resolution. Mr. Martin is
a frequent lecturer on government contracting and
construction law.

Introduction to the City of Harrisburg PA
• Pennsylvania state capital
• Population 40k
(70k with commuters)
• Street lighting was the city’s
largest non-personnel cost

Getting started
• Selecting a procurement
method
• The consultant selection
process
• Funding options
• Coordination with the
Public Utilities
• Coordination with the
appropriate State Agencies

Why we included controls with the LED project
Reduced maintenance costs
•Fewer night patrols
•Better first time fix
•More effective planning
Energy savings
•Trimming on/off times
•Adapt for LED output and cleaning
•(Potential for) dimming
Improved service
•Pro-active response to faults
•More informed response to 311 calls
Future-proofing
•Adapt light levels to events
•Sensor-based lighting levels
•Platform for IoT applications

First step: Investment Grade Audit
• 6,127 fixtures audited
• $510k annual energy
savings
• $60k annual maintenance
savings
• Utility bill reduction 60-
70%
• 548 vehicles removed
from road
• 5.7M pounds CO2
removed from
environment

Public consultation before project start
Public feedback sought
before final decisions
were made:
•LED lights from several
fixture manufacturers
deployed on one street
•Fixtures on public
display in City Hall

Public visibility throughout the project
• Web site maps progress
and issues from day 1
• Citizens can look up
individual lights
• Web site maps progress
and issues from day 1
• Citizens can look up
individual lights

Controls planning
and coordination
• Light locations
mapped by TEN
• Telensa planning
system identified
best sites for base
stations
• We refined the
best site locations
• Three bases
covered all of the
city’s lights Base stationBase station
Color = coverageColor = coverage

Base stations deployed first
• Pole mounted
• 5,000 light
control capacity
• Low power
radio with 3G
internet
connection
• Pole mounted
• 5,000 light
control capacity
• Low power
radio with 3G
internet
connection

Fixtures and controls deployed together
• Economic development areas a priority
• Contractors given freedom, but followed
street cleaning schedule for efficiency
• 7 crews, 70+ fixtures/day per crew
• 2 city crews dealing with infrastructure
issues arising
• Economic development areas a priority
• Contractors given freedom, but followed
street cleaning schedule for efficiency
• 7 crews, 70+ fixtures/day per crew
• 2 city crews dealing with infrastructure
issues arising
NEMA telecell
•ANSI-certified metering
•Power usage 0.8W
•Fixture independent
•Resilient: works normally
without network
NEMA telecell
•ANSI-certified metering
•Power usage 0.8W
•Fixture independent
•Resilient: works normally
without network
Modat app
•Automatic asset import
•Integrates with GIS info in CMS
Modat app
•Automatic asset import
•Integrates with GIS info in CMS

Street lighting from the control room
Base station 2
connects lights
across the city
(in brown)
Base station 2
connects lights
across the city
(in brown)

Base station 3
connects fewer
lights but covers
the whole city.
Telecells choose
the best
connection.
Base station 3
connects fewer
lights but covers
the whole city.
Telecells choose
the best
connection.

Base station 100
connections (in green).
Most telecells are covered
by all 3 base stations
Base station 100
connections (in green).
Most telecells are covered
by all 3 base stations

Base station 100
connects lights
4 miles outside
the city center
Base station 100
connects lights
4 miles outside
the city center

Central Management System in action
• System alert or
citizen 311 call
• Click on light for:
Status & diagnostics
• System alert or
citizen 311 call

• System alert or
citizen 311 call
Actions
• System alert or
citizen 311 call
Actions

• System alert or
citizen 311 call
Status & Diagnostics
Actions
Event log
• System alert or
citizen 311 call
Status & Diagnostics
Actions
Event log

• System alert or
citizen 311 call
Actions
Event log
Readings
• System alert or
citizen 311 call
Actions
Event log
Readings

• System alert or
citizen 311 call
Actions
Event log
Readings
Energy usage
• System alert or
citizen 311 call
Actions
Event log
Readings
Energy usage

Outcomes
Results
•Forecast Audit savings on track
(160 utility accounts)
Unexpected benefits
•Speed of central commissioning
•Real-time response to utility works disruption
•Improved service in low 311 reporting areas
With hindsight
•Making sure IT infrastructure is ready for the
system
Results
•Forecast Audit savings on track
(160 utility accounts)
Unexpected benefits
•Speed of central commissioning
•Real-time response to utility works disruption
•Improved service in low 311 reporting areas
With hindsight
•Making sure IT infrastructure is ready for the
system

Connected street lighting: future potential
Adding sensors to our network
•Environmental monitoring
•Traffic congestion monitoring
•Flood level alerts
Not dimming yet…
•Because there is no financial benefit
from our fixed power tariffs
(but we now know precisely how much
power we consume)
But plans for more adaptive lighting
•Event-specific: dimming the park lights
for July 4th
fireworks
•Part-night dimming in neighborhoods
that request it
•Central control of school flashers
…and applying ongoing savings to
deferred maintenance work, such as
replacing light poles.

IES Street and Area Lighting Conference
Thank you!
For more information please go to http://www.telensa.com/contact/

Case Study: Harrisburg Connected LED Streetlights Project

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