Fluorescent lamps use 25 to 35 percent of the energy used by
incandescent lamps to provide the same amount of
illumination (efficacy of 30 to 110 lumens per watt) and last
about 10 times longer (7,000 to 24,000 hours). Improvements
in technology have resulted in fluorescent lamps with color
temperature and color rendition that are comparable to
incandescent lamps.