GoodMart Lighting and Electrical Supply www.goodmart.com 877-402-6100 Analysis of Typical Metal Halide Idustrial Lighting Systems with Energy Saving Alternatives Metal Halide, Energy Saving Metal Halide, Metal Halide Pulse Start Systems and High Efficiency Fluorescent Lighting Systems   Good Better Better Still Best Bulb 175W Standard Metal Halide 150W Energy Saver Metal Halide 125W Pulse Start Metal Halide Four 28W 4ft T8 Fluorescent Tubes Ballast 175W CWA Ballast 175W CWA Ballast 125W Pulse Start Ballast Four Lamp L.P. QHE Ballast Mean Lumens per Watt 43 46 56 101 Mean Lumens 9,100 8,800 8,400 8,500 Average Rated Life 10,000 10,000 15,000 18,000 System Watts 210 190 150 84 Annual Operating Cost* $84.00 $76.00 $60.00 $33.60 Notes   No ballast change required Assumes BU Operating Position New Fixture Required   Good Better Better Still Best Bulb 250W Standard Metal Halide 225W Energy Saver Metal Halide 200W Pulse Start Metal Halide Six 28W 4ft T8 Fluorescent Tubes Ballast 250W CWA Ballast 250W CWA Ballast 200W Pulse Start Ballast 2x Three Lamp QHE Ballasts Mean Lumens per Watt 47 46 74 100 Mean Lumens 13,700 12,400 16,000 14,390 Average Rated Life 10,000 10,000 15,000 18,000 System Watts 294 270 215 144 Annual Operating Cost* $117.60 $108.00 $86.00 $57.60 Notes   No ballast change required Assumes BU Operating Position New Fixture Required   Good Better Better Still Best Bulb 400W Standard Metal Halide 360W Energy Saver Metal Halide 300W Pulse Start Metal Halide Eight 32W 4ft T8 XP Fluorescent Tubes Ballast 400W CWA Ballast 400W CWA Ballast 400W Pulse Start Ballast 2x Four Lamp QHE Ballasts Mean Lumens per Watt 52 59 575 99 Mean Lumens 23,400 23,400 24,400 21,120 Average Rated Life 20,000 20,000 20,000 18,000 System Watts 450 400 325 215 Annual Operating Cost* $180.00 $160.00 $130.00 $86.00 Notes   No ballast change required Assumes BU Operating Position New Fixture Required *Annual Operating Cost assumes 4,000 hours/yr. at $0.10 per kWh

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