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Energy Cost Comparison - 250 Watt Metal Halide vs. 140 Watt Cosmopolis

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ENERGY AND MAINTENANCE COST COMPARISON:
250 Watt Pulse Start Metal Halide vs. 140 Watt Philips CosmoPolis™ Ceramic Metal Halide
250 Watt Pulse Start Metal Halide 140 Watt Philips CosmoPolis™ Lighting System
ENERGY COST COMPARISON
 Number of Fixtures 20
Lamp Wattage 250 140
CRI 70 70
Average Lamp Life (Horizontal) 11,250 Hours 30,000 Hours
Approximate Initial Lumens 19,000 16,500
Approximate Mean Lumens 14,000 14,020
Total System Wattage 288 153.5
Lumens Per Watt 66 107
Energy Consumed Per Year (kWh) 1261 672
Energy Cost Per kWh $0.11
Annual Energy Cost Per Fixture $138.71 $73.92
Estimated Annual Savings Per Fixture $64.79
Years of Operation 5
Estimated Energy Savings $6,479.0
Maintenance Cost Comparison
Number of Fixtures 20
Lamp Cost $38 $85
Estimated Labor Cost Per Fixture $150 $150
Initial Cost $3,030 $3,085
Years of Operation 5
Life Cycles 1.95 0.73
Total Re-Lamping Cost $5,924.10 $2,252.05
Potential Maintenance Savings $3,672.05
Total Potential Savings  $10,151.05


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