Analysis of Typical Metal Halide Idustrial Lighting Systems with Energy Saving Alternatives

Bulb: 175W Standard Metal Halide
Ballast: 175W CWA Ballast
Mean Lumens per Watt: 43
Mean Lumens: 9,100
Average Rated Life: 10,000
System Watts: 210
Annual Operating Cost*: $84.00
Notes:

Bulb: 150W Energy Saver Metal Halide
Ballast: 175W CWA Ballast
Mean Lumens per Watt: 46
Mean Lumens: 8,800
Average Rated Life: 10,000
System Watts: 190
Annual Operating Cost*: $76.00
Notes: No ballast change required

Bulb: 125W Pulse Start Metal Halide
Ballast: 125W Pulse Start Ballast
Mean Lumens per Watt: 56
Mean Lumens: 8,400
Average Rated Life: 15,000
System Watts: 150
Annual Operating Cost*: $60.00
Notes: Assumes BU Operating Position

Bulb: Four 28W 4ft T8 Fluorescent Tubes
Ballast: Four Lamp L.P. QHE Ballast
Mean Lumens per Watt: 101
Mean Lumens: 8,500
Average Rated Life: 18,000
System Watts: 84
Annual Operating Cost*: $33.60
Notes: New Fixture Required

Bulb: 250W Standard Metal Halide
Ballast: 250W CWA Ballast
Mean Lumens per Watt: 47
<Mean Lumens: 13,700
Average Rated Life: 10,000
System Watts: 294
Annual Operating Cost*: $117.00
Notes:

Bulb: 225W Energy Saver Metal Halide
Ballast: 250W CWA Ballast
Mean Lumens per Watt: 46
Mean Lumens: 12,400
Average Rated Life: 10,000
System Watts: 270
Annual Operating Cost*: $108.00
Notes: No ballast change required

Bulb: 200W Pulse Start Metal Halide
Ballast: 200W Pulse Start Ballast
Mean Lumens per Watt: 74
Mean Lumens: 16,000
Average Rated Life: 15,000
System Watts: 215
Annual Operating Cost*: $86.00
Notes: Assumes BU Operating Position

Bulb: Six 28W 4ft T8 Fluorescent Tubes
Ballast: 2x Three Lamp QHE Ballasts
Mean Lumens per Watt: 100
Mean Lumens: 14,390
Average Rated Life: 18,000
System Watts: 144
Annual Operating Cost*: $57.60
Notes: New Fixture Required

Bulb: 400W Standard Metal Halide
Ballast: 400W CWA Ballast
Mean Lumens per Watt: 52
Mean Lumens: 23,400
Average Rated Life: 20,000
System Watts: 450
Annual Operating Cost*: $180.00
Notes:

Bulb: 360W Energy Saver Metal Halide
Ballast: 400W CWA Ballast
Mean Lumens per Watt: 59
Mean Lumens: 23,400
Average Rated Life: 20,000
System Watts: 400
Annual Operating Cost*: $160.00
Notes: No ballast change required

Bulb: 300W Pulse Start Metal Halide
Ballast: 400W Pulse Start Ballast
Mean Lumens per Watt: 575
Mean Lumens: 24,400
Average Rated Life: 20,000
System Watts: 325
Annual Operating Cost*: $130.00
Notes: Assumes BU Operating Position

Bulb: Eight 32W 4ft T8 XP Fluorescent Tubes
Ballast: 2x Four Lamp QHE Ballasts
Mean Lumens per Watt: 99
Mean Lumens: 21,120
Average Rated Life: 18,000
System Watts: 215
Annual Operating Cost*: $86.00
Notes: New Fixture Required