LED lighting offers the opportunity to reduce costs in parking lot lighting. This case study shows how replacing HPS pole fixtures with LED parking lot lights is more economical than re-lamping and changing ballasts. Paybacks are very rapid, rebates on the LED fixtures are available, and no maintenance will be needed are all achieved by upgrading from HPS pole fixtures to LED lighting.
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Parking Lot Lighting - A Case Study New LED Fixtures or Re-lamping HID Fixtures
Rapid Payback from LED Fixture Replacements & Retro-fits
LED outdoor lighting fixtures in parking lots offer numerous advantages, including lower
energy costs and no maintenance for the life the LED fixture. First costs have been
perceived to be higher, thus there is the economic hurdle to seek paybacks from the
savings to support the replacement with new fixtures. In this Case Study of LED Parking
Lot Lighting, the replacement of high pressure sodium (HPS) fixtures with LED fixtures
is shown to be the compelling choice instead of re-lamping and replacing of ballasts.
Commercial Outdoor Office Park Lighting Issues
This Class A, Commercial Office Building, is part of a 1.7 million square foot property
development outside of Albany, N.Y. The property management company was examin-
ing whether to do a periodic re-lamping and maintenance of existing HPS parking lot
fixtures or install LED fixtures. These new LED luminaires would have to light the park-
ing lot, driveway, building façade, and flag poles. The planned maintenance activities
would have replaced the HPS lamps, ballast and starter components. The HPS fixtures
were approximately ten years old, and were in acceptable condition.
Existing HPS Parking Lot Lighting System
At this office building, there were eighteen pole fixtures for the parking lots, consuming
440 watts each, two entrance shoe box fixtures, at 195 watts each, and six façade
flood lights, and flag pole lights, using 150 watts each. The total installed load was 9.2
kilowatts (KW), and it is estimated that 41,106 kilowatt-hours (kWh) of electricity is
used per year.
Parking Lot Lighting - Engineering, Audit and Life-Cycle Analysis
The site was surveyed and an audit was prepared of the lighting conditions, and costs.
The Parking Lot lighting was engineered using AGI32 to fully simulate the proposed
lighting. The lighting analysis used photometric data generated from the LM-79 report
from a certified test lab. All the LED Parking Lot Fixtures are from Evolucia Lighting.