Cheatsheet: The Metrics of the Bulb

Energy efficient LED light bulbs that can fit in a standard socket, last over a decade, and save users money over the life of the bulb, are starting to slowly trickle onto the market. This morning GE announced its latest bulb, and late last year Netherlands-based Lemnis Lighting announced its LED bulb that can replace a 60-watt incandescent. But the rub — both of these LED bulbs cost around $40 to $50. Here’s a quick cheatsheet on the metrics of the bulb:

Bulb Lifespan Efficiency Cost
Incandescent Bulb Lasts about 1,000 hours, less than a year. Most inefficient consumer bulb option, being phase out by companies and governments worldwide. 50 cents to $1
Compact Fluorescent Bulb (CFLs) Lasts 5,000 to 6,000 hours 3.5 to 4 years Uses up to 75 percent less energy than an incandescent. Around $4 to $10 (for specialty bulbs)
LED Bulb Lasts 25,000 to 36,000 hours, 17 to 25 years Can be 75 to 90 percent more energy-efficient than incandescents. $40 to $50

Image courtesy of Lemnis Lighting.


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