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Bunting Hall Energy Audit

April 2008

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Incandescent Lamps

The light is used 500 hours per year.

Energy use: 18 watts
Action taken:
Annual savings: $0.00

Switching the 75-watt incandescent bulb to a 20-watt CFL would result in the same light at a fraction of the cost.

Energy use: 73 watts
Action taken: switch to CFL
Annual savings: $7.95

Switching the 60-watt incandescent bulb to a 13-watt CFL would result in the same light at a fraction of the cost.

Energy use: 58 watts
Action taken: switch to CFL
Annual savings: $6.75

Floor lamp used eight hours per day.

Energy use: 58 watts
Action taken: convert to 12-watt CFL
Annual savings: $9.20

Two identical lights in one office began with two different bulbs—a CFL pulling 20 watts and an incandescent drawing 73 watts. Replacing the incandescent with a 13-watt CFL would generate nearly as much light, and far less heat.

Energy use: 93 watts
Action taken: replace with CFL
Annual savings: $12.20

Two matching desk lamps each use 60-watt incandescent bulbs.

Energy use: 116 watts
Action taken: replace with CFLs
Annual savings: $18.40

Although small, this incandescent lamp is inefficient, generating more heat than light.

Energy use: 57 watts
Action taken: use new candelabra CFL
Annual savings: $7.75

By contrast to an incandescent, the CFL is highly energy efficient. No action is necessary.

Energy use: 12 watts
Annual cost: $0.21 watts

Three matching desktop lamps in one office use incandescent bulbs, resulting in a significantly warmer work environment. As a result, the lamps are not used at all. CFL lighting will brighten the workspace while keeping it cool.

Energy use: 174 watts
Action taken: replace with CFLs
Annual savings: $0.48

Two sets of fluorescent lights, each drawing 21 watts, are used two hours each week.

Energy use: 42 watts
Annual cost: $0.42

12 48" fluorescent tubes lights

Energy use: 360 watts

Two 15-watt lamps using CFL bulbs greet visitors entering the main entrance of Bunting.

Energy use: 30 watts

The Bunting Conference Room features 12 25-watt bulbs in dimmable candelabras. Turning the lights off when not in use, at least ten hours a week, adds up to significant savings.

Energy use: 300 watts
Action taken: turn off
Annual savings: $15.00