Efficient lighting and the $ 50 bulb
News from MENAFN.COM:

(MENAFN – Arab News) Lighting for homes, offices, factories and outdoor locations like highways, airfields and sports stadiums used 700 Terrawatt-hours (TWh) of electricity, almost 19 percent of all US power consumption, in 2010.

Traditional incandescent light bulbs, fluorescent strip lights, compact fluorescent lamps (CFLs) and the high-pressure sodium lights along highways used nearly as much power as industrial customers (970 TWh), according to a recently published report by the US Department of Energy (“2010 US Lighting Market Characterization” Jan 2012).

Lighting demand is rising sharply. Excluding headlamps and other lights installed on cars and other vehicles, there were more than 8.2 billion lamps installed in the US at the end of 2010, up from under 7 billion in 2001, according to the Energy Department.

By far the largest number are fitted in homes, which accounted for 5.8 billion lamps. The average American home has more than 51 – including 9 in the bathrooms, 8 in the bedrooms, 6 each in the living rooms and kitchens and 1 in the basement.

The typical home light is only on for only 1.8 hours per day, compared with 11-13 hours for lamps in offices, factories and outside. But it is spectacularly inefficient.

Residential lighting accounts for just 8 percent of all light output (measured in lumens) but…………… continues on MENAFN.COM

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