Tom Raftery's Library tagged incandescent →  View Popular, Search in Google

The incandescent light bulb’s days are numbered. Under federal law, the 100-watt bulbs are supposed to be taken off the shelf next year, followed later by the more common 40- and 60-watt models.


But guess who’s still using them? The Department of Energy.

incandescent incandescent light bulb Department of Energy doe cfl

Huddler Bobkart developed a formula for computing the total (tangible) cost of ownership of light bulbs that takes into account the initial cost of the bulb, its energy consumption, its light output, its lifetime length, and the cost of electricity

cfl incandescent led lighting led light bulbs

he ubiquitous but highly inefficient 60-watt light bulb badly needs a makeover. And it could be worth millions in government prize money — and more in government contracts — to the first company that figures out how to do it.

Right now, that company could be Philips, the Dutch electronics giant. The company announced on Thursday that it had submitted the first entry for the L Prize, an Energy Department contest that will award up to $10 million to the first person or group to create a new energy-sipping version of the most popular type of light bulb used in America.

incandescent light bulb philips L prize led cfl GreenNumbers greenmonktv

A European Union ban on the manufacture and import of 100-watt and frosted incandescent light bulbs, in use since the 19th century, has come into force.

eu 100w incandescent light bulb cfl lcd greenmonktv

If a CFL bulb lasts for longer than 50hrs, then the total life cycle energy consumption of the CFL will be lower than that of an incandescent bulb even though they are more complicated to make.

cfl compact fluorescent lightbulbs incandescent light bulbs greenmonktv

Ultra-efficient bulbs could make even compact-fluorescent lights obsolete.

led lighting led incandescent greenmonktv