LIGHTING RETROFIT CASE STUDY
Market Type: Multifamily Affordable Housing and Commercial Campus in Manhattan.
The following information and photos were kindly provided by Energy Efficient Lighting Design, the lighting contractor and Con Edison Market Partner. (eldesign.com)
15-Buildings (10 Multifamily/4 Commercial/1 Garage) on a 5-Block Campus
Lighting Retrofit Project Case Study:
- Total Number of New Fixtures: 3,527
- Total Annual Energy Savings: $84,100
CORRIDORS “BEFORE”
- 1F18T12
- 21W fluorescent strip were on 24/7
CORRIDORS “AFTER”
- Bi-level LED Fixtures with Integral Occupancy Sensors/photcell
- 16W full bright/4W at 10% light level
- Number of fixtures (2,500)
- Annual energy savings: $23,500
EMERGENCY STAIRS “BEFORE”
- 1F20T12
- 25W Fluorescent strip on 24/7
EMERGENCY STAIRS “AFTER”
- Bi-level LED Fixtures with Integral Occupancy Sensors
- 14W at full bright/3W at dim
- Number of fixtures (700)
- Annual energy savings: $9,300
BUILDING SECURITY FLOOD LIGHTING “BEFORE”
LOCATION A:
- 150W High Pressure Sodium Fixtures (controlled by building photocell)
- Number of fixtures (41)
- 4,022 hours per year on
LOCATION B:
- 95W High Pressure Sodium Fixtures (controlled by building photocell)
- Number of fixtures (24)
- 4,022 hours per year on (Con Ed hours used for incentives)
BUILDING SECURITY LIGHTING DIRECTED DOWNWARD (i.e. certified Dark Sky Compliant) “AFTER”
LOCATION A:
- Led Bi-level Wall Mount with integral occupancy sensor/photocell
- 55W bi-level fixtures at full bright/6W at dim
- Number of fixtures (41)
- Annual savings: $2,200
LOCATION B:
- Led Bi-level Wall Mount with integral occupancy sensor/photocell
- 28W bi-level fixtures at full bright/3W at dim
- Number of fixtures (24)
- Annual savings: $600
Note: Depending on the environment, sometimes an astronomical clock is more accurate than a photcell.
PATHWAY LIGHTING “BEFORE” DURING THE DAY
PATHWAY LIGHTING “BEFORE” AT NIGHT
- 250W High Pressure Sodium Fixture) controlled by Building Photcell)
- Number of fixtures (54)
4,022 hours on per year (Con Ed hours used for incentives)
PATHWAY LIGHTING “AFTER” DURING THE DAY
PATHWAY LIGHTING “AFTER” AT NIGHT
Note: Light is directed downwards (i.e. certified Dark Sky Compliant)
- LED Bi-level lightingfixtures with integral occupancy sensor/photocell
- 61W at full bright/7W at dim
- Number of Fixtures (54)
- Annual energy savings $5,000
PARKING GARAGE “BEFORE”
- 175W Metal Halide Fixtures
- Number of fixtures (152)
- ON 24/7
PARKING GARAGE “AFTER”
- Bi-Level LED Fixtures
- 66W at full bright/7W at dim with integral Occupancy Sensors
- Number of fixtures (152)
- Annual energy savings: $39,000
PARKING LOT “BEFORE”
- 175W Metal Halide Fixtures (controlled by building photocell)
- Number of fixtures (57)
- 4,022 hours on per year (Con Ed hours used for incentives)
PARKING LOT “AFTER”
- Bi-level LED Fixtures with integral occupancy sensor/photocell
- 93W at full bright/9W as dim
- Number of Fixtures (38)
- Annual energy savings $4,500