CVPS/Manchester Program Concept:
Commercial Street Lighting Program
January 10th, 2006
Quick Description of Opportunity
Manchester Village and Manchester Center Information
The Village of Manchester and Manchester Center use a total of 202 street and security
light fixtures leased from CVPS, with a total power demand of about 44 kW. All but one
of the fixtures are mercury vapor lamps; metal halide street lighting could be used at
approximately half the power draw of the mercury fixtures, although metal halides
possess only 40 percent of the lamp life that current technologies possess. Non-energy
benefits include improved color rendering (which effectively results in lower wattage
required) and shorter restrike time (with the pulse-start metal halides).
This program would take place within CVPS, and would switch over street lights to metal
halide technology on a pilot basis.
Program Strategy
CVPS will establish a schedule by which all mercury vapor fixtures would be replaced
with metal halide fixtures. CVPS will cover 100 percent of the installation cost for each
fixture.
Budget Estimate
VEIC estimates that each fixture retrofit would cost $200. The hard cost total would be
$40,000. Assuming that a crew could replace 2 fixtures per hour at a cost of $200 per
hour, the labor cost would be an additional $20,000. The total project cost would be about
$60,000.
Should CVPS pursue the next phase of planning, VEIC will need to estimate the O&M
impacts of the shorter lamp life and ensure cost-effectiveness screening.
Energy Savings Estimate
o 22 kW connected load, yielding maybe 20 kW winter peak savings (depends upon
diversification, but the lights should be on during winter peak) and no summer
peak kW savings.
o About 100 MWh/yr (assuming operation at 4,380 hours per year per fixture).
Advantages/Disadvantages
The advantages of the streetlighting program are:
o It is easily differentiable from Efficiency Vermont, because EVT does not current
pursue a streetlighting program. In addition, this project is internal to CVPS, who
is not eligible for financial incentives from EVT.
o Because it is differentiable, it will be easier to track spending and energy savings
for this program specifically
o It is feasible to implement within the allotted timeframe (provided that CVPS sets
aside the needed staff resources)
o The streetlighting measure is fairly cost-effective, persistent, and will provide
Winter kW savings
The primary disadvantage of the street lighting program is its cost and the O&M impacts
of the metal halide fixtures.
IT Needs- Issues
To track spending and savings for these projects, the IT system will need to be able to:
o Track installed measures and claimed savings
o The savings methodology would need to be agreed-upon by the Public Service
Board.