HID
LED
Ventus LED
HID vs. LED Case Study
HID vs. LED CASE STUDY
CONTROL IMPLEMENTATION
A Cooper Controls system was implemented to change light output (lumens) and
decrease the power supplied to the fixtures during curfew hours. By varying the
number of LightBAR optics being illuminated at a given time, additional energy
savings is achieved.
•F
or pedestrian safety from dusk to 10:00 p.m., the Ventus operates at
full power using all 12 LightBAR optics, which still provides 33% in
energy savings compared to the older metal halide fixtures.
• From 10:00 p.m until 1:00 a.m., the fixtures are powered down
using eight LightBAR optics resulting in a 55% energy savings.
• From 1:00 a.m. until 4:00 a.m., the fixtures use four LightBAR
optics resulting in 77% energy savings.
• From 4:00 a.m. until dawn, the fixtures are back up to full power
(12 LightBAR optics) to illuminate the parking lot for employees
coming into work, still resulting in a 33% savings.
HID vs. LED Energy Usage
HID
458
$2,499 Annual Energy Cost 1
LED
309
Wattage
SIGNIFICANT ENERGY SAVINGS WITH NEW OUTDOOR LED LIGHTING
Cooper Lighting upgraded existing 400W metal halide area/site lighting fixtures
with LED luminaires at its corporate headquarters in Peachtree City, GA.
The results are significant. The VentusTM luminaire, which features 12 LightBARTM
optics, consumes only 309W compared to 458W from the metal halide fixtures,
while still providing the recommended light levels. In addition, the
AccuLED OpticsTM system provides shaped light distributions creating even,
uniform illumination exactly where needed. The new lighting also provides a
benchmark warm white light of 4000K correlated color temperature (CCT) with no
sacrifice in lumen output or lighting performance. The fixtures have a projected
average rated life of 50,000 hours, which is six times longer than the previous
system.
33%
33%
208
55%
$1,353 Annual Energy Cost 1
104
77%
Dusk
10pm
1am
4am
Dawn
Time of Day
NOTE: 1 Based on 11-1/2 hours on time at $.10/kWh.
Light
Source
Calculation
Summary
Unit
AVG.
MAX.
MIN.
AVG./MIN.
Ratio
MAX./
MIN. Ratio
HID
Illuminance
FC
1.41
4.3
0.26
5.38
16.5
LED
Illuminance
FC
2.53
4.1
1.4
1.81
2.9
BEFORE: 400W Metal Halide (458W Load)
AFTER: 309W LED
VENTUS LUMINAIRE KEY FEATURES
4000K CCT STANDARD: With typical LED outdoor area products
standardized on a cold blue color temperature (6000-6500K CCT) to drive
performance, the Ventus’ desired 4000K color temperature meets/exceeds
competitor photometrics with no sacrifice in lumen or lighting performance.
ACCULED OPTICS SYSTEM: The AccuLED Optics system features a choice of
15 unique optical distributions to satisfy every application need with more task
lumens, with efficiencies as high as 95%. Each optic produces 100% of the
distribution shape. Individual optics are not aimed to specific portions of
the beam.
LIGHTBAR TECHNOLOGY: Ventus is offered in two to twelve LightBAR system
configurations, rivaling 70W to 400W HID solutions, respectively. Each LightBAR optic
produces nominal 1750-1850 lumens (depending on distribution) and consumes 26W
each (board and driver).
40°C AMBIENT RATING: Ventus’ ambient rating of 40°C ensures the fixture operates
cooler and can safely perform in high ambient temperatures. The LightBAR optics are
IP66 rated and each luminaire comes standard with a 10kV surge suppression
providing industry leading protection against surge failures.
High Performance Optical System
Scalable Lumen Package & Energy Savings
4000K Color Temperature
40°C Temperature Rating
5-Year Warranty
Cooper Lighting, McGraw-Edison and SustainabLEDesign logos are valuable trademarks of Cooper Industries in the United States and other countries.
You are not permitted to use the Cooper Trademarks without the prior written consent of Cooper Industries.
Cooper Lighting, LLC
1121 Highway 74 South
Peachtree City, Georgia 30269
P: 770.486.4800
www.cooperlighting.com
ADH101124