HomeMy WebLinkAboutItem 4.06 LED TrafficSignalAGENDA STATEMENT
CITY CLERK
File
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CITY COUNCIL MEETING DATE: November 21, 2000
SUBJECT:
Request for Appropriation to Purchase Green LED (Light Emitting
Diode) Traffic Signal Modules
Report prepared by: Lee S. Thompson, Public Works Director
ATTACHMENTS:
1)
2)
Confirmation letter from PG&E
Budget change form
RECOMMENDATION:
1)
2)
Authorize new Capital Improvement Project in the amount
of $34,800 from unallocated gas tax reserves and $122,920
from new revenue.
Authorize Staffto solicit bids for purchase of green
LED modules.
FINANCIAL STATEMENT:
The appropriation request includes the following:
Cost for green LED modules for existing intersections
plus those under construction (100% rebate)
Estimated labor cost through Alameda Co. Signal
Maintenance contract ~ $400/intersection x 43
Staffand misc. cost for bidding the material purchase:
Cost for spare LED's (not covered by rebate)
Total project cost:
10% contingency
Total appropriation request:
Less rebate for material:
Estimated actual cost to be paid from gas tax funds:
$122,920.00
$ 17,200.00
$ 1,000.00
$ 2,300.00
$143,420.00
$ 14,300.00
$157,720.00
-122,920.00
$ 34,800.00
Estimated annual energy cost for intersections included in
program: 43 x average $1300/year each
Estimated annual maintenance cost for burnout repairs
and relamping green lights ~$400/intersection x 43
$55,900.00
$17,200.00
$73,100.00
Anticipated cost reduction by adding green LED's ~ 40%
Estimated maintenance cost reduction
Total estimated annual savings:
$22,360.00
$17,200.00
$39,560.00
Estimated payback period for actual cost:
10.5 months
COPIES TO:
ITEMNO. ~.~
g:\agenmisckLED rebate.
Estimated savings for first five years is $163,000. ($39,560 per year less the $34,800 actual cost
to the City.)
For ensuing five year periods, assuming the LED modules have to be replaced every five years,
the cost comparison for LED vs. incandescent is as follows:
Energy cost using incandescent ~ $1,300/intersection/year
x 43 intersections x 5 years
Green light maintenance/relamping ~ $400/intersection
x 43 intersections x $ years
$279,500.00
$ 86,000.00
$365,500.00
LED Purchase and installation cost, no rebate:
Energy cost ~ $1,300/intersection/year x 43 x 5 years less 40%
Total:
$157,720.00
$167,700.00
$325,420.00
Savingsper five year period: $ 40,080.00
DESCRIPTION: Approximately two years ago, the City participated in a PG&E rebate
program to install red LED traffic signal modules throughout the City. The replacement program also
included the orange "don't walk" portion of the pedestrian signals. Depending on the configuration of the
intersection, installing the red LED's and ped hands has saved ~om 45 to 60% of the original energy cost,
as well as most of the. contract cost for relamping or replacing burned out light bulbs for the red lights and
ped hands.
At the time that the red LED's were installed, the technology for the green LED's was still new and the
modules were quite expensive. Green modules that meet ITE (Institute of Transportation Engineers) and
State of California standards are now available at a reasonable price. PG&E has announced a rebate
program for green LED's that pays essentially 100% of the cost of the modules. Staff estimates that
installing the green LED's would reduce the energy usage for traffic signals by another 40%. The LED's
improve safety since they are brighter than incandescent light and therefore more visible to drivers. The
lower incidence of burnouts also improves safety. Use of LED's will also help reduce the drain on the
available power in the area, potentially reducing the number of power outages. From an environmental
standpoint, the use of energy-saving devices is therefore strongly recommended.
Use of the LED modules would eliminate most of the maintenance cost for replacing burned out bulbs
and relamping since this activity is relatively minor for the yellow lights and white pedestrian '`walk"
signals. The cost of the yellow LED's and the white "walk" LED signals is still quite high and is not
covered in this rebate program; the length of time that these indications actually operate is minor and not
worth the cost of changing to LED's at this time.
While the actual cost of an incandescent light bulb is less than $2.00, the cost of replacing a burned out
light bulb as a callout is approximately $100 because ofthe labor charge. Bulbs replaced during the
annual relamping process are less on a per-each basis, but the cost for relamping green lights in an
intersection is approximately $300. The use of the LED modules eliminates the cost of replacing bulbs
for green lights.
As noted in the Financial Statement above, the estimated savings on an annual basis is approximately
$39,560 based on current energy and maintenance rates. The payback period for the actual cost to the
City is estimated at less than one year. It is expected that electric rates will increase once the rate freeze
has ended, and the cost of maintenance will increase based on the cost of living. The warranty for the
specified LED modules is five years, after which time the units may need to be replaced. The cost of the
modules has been decreasing over time, and Staff feels that it will continue to be economical to use the
LED's, even though the City may need to purchase new modules in five years. As noted in the Financial
Statement, even based on current costs, the estimated savings for each ensuing five year period is $40,000
after purchasing the replacement modules.
This request includes all existing intersections and those which are under construction and are beyond the
point that the developer or contractor can be asked to furnish the green LED's. The standard traffic signal
specification is being modified to include green LED's for all future traffic signal construction, either
through development or capital projects.
Staff recommends that the City Council (1) approve the new Capital Improvement Project in the amount
of $157,720 (with offsetting new revenue source in the amount of $122,920), and (2) authorize Staff to
solicit bids to purchase the green LED modules.
Gas and
£1~otri~ £ompany~
DELIVER ENERGY;"
November 8, 2000
Gingel~ Russell ·
Cityof Dublin
100 Civic Center Plaza.
Dublin, CA 94590
123 Mission Street
P.O. Box 770000
San Francisco. CA 94177
4,15.973.7000
RE: LED Traffic Signal Rebate Reservation
Dear Ginger:
This letter will serve as confirmation that Pacific Gas and Electric Company has reserved
$122,920.00 for City of Dublin under California's statewide LED Traffic Signal Rebate Program.
Funds for this program are limited and are being allocated on a first-come, first-served basis.
Under the terms of thc program, the funds have been reserved with thc intent that all LEDs will
be installed before June 1, 2001. If, after 90 days from this notice, your agency has not taken any
action to acquire or install LED traffic signals, Pacific Gas and Electric Company reserves the
right to release these funds to another applicant or to adjust the amount of dollars designated for
your agency.
You will be receiving an LED Rebate Reporting form that will be used to process your rebates. It
will include a spreadsheet on which all LED retrofits must be recorded by type, date, intersection,
and PG&E account number. Proof of purchase of the products--not including any costs for labor,
overhead, or service---will be required as an attachment to the form.
All LED traffic signals eligible under this program meet ENERGY STAR requirements. Please
mention this to your supplier and refer to the enclosed ENERGY STAR specifications when
placing your order.
Thank you for participating in this important energy-saving program. We look forward to
working with you to meet our goal of having all LEDs operational before June 1, 2001!
Sincerely,
Ann Kelly
Program Manager
End.
ENERGY STAR® Eligibility Criteria:
ENERGY STAR® for Traffic Signals
Energy-Efficiency Specification
Below is the product specification for ENERGY STAR qualified traffic signals. A product must meet all of the
identified cdteda if it is to be qualified as ENERGY STAR .by its manufacturer.
This traffic signal specification is based on a Iow energy requirement and conforma.nce to the Institute for
Trsnsportation Er~gin~ers (iTEl elnterim LED' Purchase.Specification, VehiCle Traffic Control Signal
Heads, Part.2:' Light Emitting Diode (LED) Vehicle Traffic Signal Modules" (VTCSH Part 2). At this time,
only the LED technology meets such requirements and therefore the specification includes terms specific
to LED traffic signals. However, EPA is open to any other (non-LED) technology that meets both the EPA
specification and ITE's VTCSH Part 1 or Part 2 requirements, or a future relevant ITE specifiCation.
Manufacturers are encouraged to contact EPA with such technology only if they are able to meet such
requirements.
1) Definitions: Below is a brief description of an LED traffic signal and related terms as relevant to
ENERGY STAR.
A. Vehicular Traffic Si.qnal: A power, operated illuminated traffic control device, other than a
barricade warning light or a steady illuminated lamp, by which traffic is warned or directed to take
some specific action.
B. Modules,: Standard 8-inch (200 mm) or 12-inch (300 mm) round traffic signal indications (balls).
They consist of the light source and the lens (usually a sealed unit) that communicate movement
messages (stop; caution or prepare to stop, and go) to drivers 'through red, yellow, and green
colors. Arrow modules in the same colors are used to indicate turning movements. Pedestrian
modules are used to convey movement information to pedestrians.
C. Traffic Si.qnal Head: The combination of the traffic signal housing, with the modules (red, yellow, ·
and green) installed in it. The head typically contains three, modules and the necessary wiring,
although it may also include arrow modules.
D. LED Lamps or LEDs: The individual light-emitting diodes (LEDs), which can be set on a circuit
board in any arrangement.
E. LED Traffic Signal: The generic term used to describe the combination of signal heads or
modules 'that use LEDs as the source 'of light. The combination also' incorporates the housing
unit at an intersection along with any internal components and support .structures.
2) Qualifying Products: For .the purposes of ENERGY STAR, LED traffic signal modules include the
following:
A. LED Vehicular Traffic Signal Modutes, including Arrow Modules
B. LED Pedestrian Signal Modules
Other (non-LED) technology products may be considered if they meet ITE's VTCSH Part 1 or 2 (or
other relevant future ITE specification), as well as the requirements of this specification.
3) Ener,qv-Efficlency Specifications for Qua. lifyinq Products: Products listed in Section 2 that meet the
specifications outlined in Table 1 below and that meet. the minimum performance requirements of the
appropriate IrE specification (either current or future) may qualify as ENERGY STAR. The wattage
CITY OF DUBLIN
BUDGET CHANGE FORM
CHANGE FORM #
New Appropriations (City Council Approval Required):
Budget Transfers:
X From Unappropriated Reserves From Budgeted Contingent Reserve (1080-799.000)
(If Other than General Fund, Fund N° - Within Same Department Activity
__X From New Revenues Between Departments (City Council Approval Required)
Other
DEcREASE'B~GET'~CCO~ ~OUNT .i: : INC~E BUDGET ACCOUNT AMOUNT
Name: Name: New CIP
LED Traffic Signal Conversion
Account #: 001.96562.750.050 $122,920
Account #:
Name: Name: "New CIP
LED Traffic Signal Conversion
Account #: 206.96562.750.050 $9,500
Account #:
Name: Name: New CIP
LED Traffic Signal Conversion
Account #: 206.96562.740.000 $25,050
Account #:
Name: Name: New C1P
LED Traffic Signal Conversion
Account #: 206.96562.728.000 $250
Account #:
Name: Name: General Reimbursements
$122,920
Account #: 001.570.005
Account #:
City Manager: Date:
Signature
ASD/FinMgr ¢~,~.fi_.~ ~r". ¢'~"~- S'~a¢ Date:.. ,, l,aclo'o
REASON FOR BUDGET CHANGE ENTRY: New project to purchase and install green LED traffic signal
modules. $122,920 to be offset by new revenue source (PG&E rebate). Project will reduce annual energy bill
for traffic signals by an estimated 40%.
Mayor: Date:
Signature
Posted By: Date:
Docu~ent~/
Signature