| Initial Cost | Expected Life (hours) | Power (Watts) | Energy Consumed (kilowatt-hours; bulb life) | Operating Cost | Total Cost per hour | ||
| Compact Fluorescent Lamp | $6.00 | 6000 | 19.4 | 116.4 | $11.64 | $0.0029 | |
| Incandescent | $1.10 | 1500 | 78.2 | 117.3 | $11.73 | $0.0086 | |
 
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| Initial Cost | Expected Life (hours) | Power (Watts) | Energy Consumed (kilowatt-hours; bulb life) | Operating Cost | Total Cost per hour | ||
| Compact Fluorescent Lamp | $6.00 | 6000 | 19.4 | 116.4 | $11.64 | $0.0029 | |
| Incandescent | $1.10 | 1500 | 78.2 | 117.3 | $11.73 | $0.0086 | |
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