POWERful Facts: Does turning fluorescent lights on and off frequently waste more energy than it saves?

When a fluorescent light is first switched on, there is a higher current draw for a second or so. However, the length of time for this higher current draw is so short that it has almost no effect on energy use. Leaving a fluorescent light on for more than a few minutes will use more energy than turning it off and turning it back on when needed.

A ballast regulates current to the lamp during startup and operation. Turning lights on and off frequently will have some impact on lamp and ballast life. However, the old principle of leaving lights on if the room is unoccupied for less than 15 minutes, no longer holds true. (Source: www.energy.gov & Duke Energy)

Lighting manufacturers now recommend that fluorescent lamps be turned off if the room will be unoccupied for more than two or three minutes. This is the result of technology advances in electronic ballasts, which can handle frequent on-off cycling with little loss of lamp and ballast life. This also applies to LED lighting, which Meredith has recently begun to implement in parts of the campus.  If you have an individual workspace, please turn off your lights when leaving your space for more than a few minutes.

—Submitted by Dave Lyons, Energy Manager

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In this issue:

Meredith College to Offer Entrepreneurship Programs »

Celebration Held for Psychology Program »

Kolb Elected President of North Carolina Council of Teachers of Mathematics »

Class of 2020 Celebrates 20th Anniversary of Fire & Water »

Class of 2017 Donors Recognized »

New CSA Day Exhibition in the Library »

Meredith Student Receives Award from National Association of Social Workers NC Chapter »

Meredith Student Earns Award from WomenNC »

Cupil-Garcia and Gunther Earn Iota Sigma Pi National Honors »

Meredith Partners with Dress for Success »

Faculty/Staff Accomplishments and Departmental News 5/10/17 »




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