Light bulb with 20-year life unveiled on Earth Day

A prize-winning, super-energy-saving LED bulb from Dutch electronics giant Philips said to last over 20 years went on sale on Sunday to coincide with Earth Day.

The bulb that won the US Department of Energy's Bright Tomorrow Lighting Prize was available from retailers for US$50 (S$62.40), down from an initial US$60 price tag. The company said it was planning discounts to bring the cost down to as little as US$25.

The 10-watt LED bulb (light-emitting diode) was deemed an efficient alternative to the standard 60-watt incandescent bulb, and rated to last 30,000 hours - when used four hours a day, that translates to a more than two-decade life span, according to the company.

For consumers attentive to cost, Philips said the price tag was easily offset by energy savings of US$165 over its lifetime.

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