Light Bulb Market Update: LED Efficiency Has Doubled, And Prices Have Fallen

Several years ago, I was hard pressed to find an LED light bulb offering reasonable efficiency without an exorbitant price. We’re talking about $10-$20 for a dim bulb (40-Watt equivalent/450 lumens and less in some cases) achieving 45 lumens per Watt (lm/W). An efficiency of 45 lumens per Watt (usually up to 55) was common…

Discarded Batteries Could Light Developing Regions

IBM researchers in India discovered that 70% of discarded laptop batteries have enough capacity to power an LED light bulb for 4 hours per day for a year. This is due to the fact that laptops lose their portability long before their batteries are completely dead (their battery life becomes unacceptably short), so they are…

Cree Introduces A New Highly Efficient Outdoor LED Luminaire

Originally published on Cleantechnica By Nicholas Brown. Cree, a manufacturer of cutting-edge LEDs has released a new LED parking lamp: The OSQ™ Area LED luminaire. This is designed and priced to replace 54 million high intensity discharge (HID) parking lights across the United States, facilitating energy savings of up to 70%. The OSQ Area LED luminaire…