Showing 2 ideas for tag "lighting"

Department of the Interior

Deactivate Half of the Florescent Bulbs in Overhead Lighting

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In existing buildings where more than sufficient lighting exists, rotate half of the bulbs in each overhead fixture by 45 degrees to deactivate them. That could save up to 50% of electricity used for overhead lighting with no upfront retrofit investment. Many areas I work in are far too brightly lit. The excess lighting is often visually uncomfortable and a gross waste of energy.

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Department of the Interior

Replace all fluorescent tubes with LED-tubes

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LED-tubes are direct replacements for fluorescent tubes, but do not need ballasts. Thus, LED-tubes can be used in existing fluorescent fixtures (once ballasts are removed), and save about 75% electricity compared to the fluorescent tubes. There are numerous manufacturers, the LED-tubes have 4-6 times longer lifespan than fluorescent, and contain no mercury. The only downsides are: the upfront cost, which is substantially... more »

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