Skip to main content
Case study · Networked lighting controls

Dusk to dawn, on its own

Two-level garage and a 40-stall open lot in Queens — LED site lighting that ran dusk to dawn at full output, every night of the year.

Parking · Queens, NY · 8 zones

Garage and parking lot site plan across one dayA two-level parking structure and an open forty-stall lot cycling through one day. At night the lot poles hold a thirty percent setback with two at full around a car near the entry; in daylight the photocell holds the lot off while the structure stays occupancy-driven. A marker sweeps the day band along the bottom in time with the plan.GARAGE + LOT — ONE DAY CYCLE · PHOTOCELL + SCHEDULELevel 1 — 100%Level 2 — 5%Structure — 2 levelsRampProperty lineStallsPhotocellOpen lot — 40 stalls · 14 polesNight — set back, lifts around motionDay — photocell holds the lot offOne night, drawn to timeMidnightDawn — offNoonDusk — on11pm30% + liftsOff — daylight100%Structure bayOccupancy sensorControl deviceProperty lineThe photocell decides on and off; the schedule decides how bright; occupancy lifts the rest.
Figure 1 — One day on the lot: photocell off at dawn, on at dusk, set back late with lifts around motion.
Schedule

Zone by zone

Eight zones across two structure levels, the lot, and the entries.

ZoneSpaceHrs/yrControlWhy
Z-1 – Z-2Structure levels ×28,7605% standby, occupancy to fullParked cars aren't occupancy
Z-3Ramps and entries8,76030% standby, occupancy to fullTransition zones stay readable
Z-4 – Z-7Lot poles, four groups4,300Photocell + schedule + occupancyDusk to dawn only, set back late
Z-8Perimeter and signage4,300Astronomic scheduleOn at dusk, off at dawn, no drift
Commissioned

Sequence of operations

How each zone is programmed.

SpaceSequenceNote
Lot ×4 groupsphotocell on · 100% to 11pm · 30% afterOccupancy lifts the group, not the lot
Structure ×25% standby · occupancy to full24/7, no schedule
Perimeterastronomic on/offTracks sunset through the year
Calculated

Annual impact

18,520kWh avoided / yr
$4,630saved / yr at $0.25/kWh
7.3 t
CO₂ avoided / yr
≈820
gallons of gasoline equivalent
≈120
tree seedlings grown 10 years

Start with a feasibility memo

A savings range and a scope for your building, before you commit.

Get a feasibility memo