Time for bright switch
Rashmi Khatri is an astrologer. She recently renovated her office in Delhi, dividing it into two compartments— one for showcasing gemstones and other for attending clients. For the showroom space, she wanted adequate lighting without increasing the electricity bill.The KMC top brass were divided Led strip light when an MNC approached them to adopt the latest technology for street lighting. While mayor Sovan Chatterjee welcomed the change, She chose imported light emitting diodes, or LEDs.
LEDs have been hailed as the future lighting source. They are three times more efficient than Compact Fluorescent Lamps (CFL). A three-Watt LED can replace a 10-Watt CFL or a 40- Watt incandescent bulb. But an LED costs Rs 800 and upwards compared to a 100-rupee CFL or a 10-rupee incandescent bulb. Apart from the high cost, LEDs are not popular because there are no defined performance standards for them in India. One in five bulbs sold in India is a CFL; LEDs account for only eight per cent of total lighting.
Khatri is unsure if the LEDs she bought will run for 50,000 hours as claimed by the seller. A CFL lasts for 6,000 hours and an incandescent bulb has a life span of 1,200 hours (see ‘Visibly efficient’, Down To Earth, August 31, 2009).
For Dinesh Kumar Gupta, a lighting shop owner in Delhi,Many areas of the world are simply off the grid. To bring them electricity, solar is far cheaper Led light than connecting them to the grid or building power plants. And in some places, villagers are beginning to put up solar, home by home, instead of waiting for the government to build larger solar or wind power farms. experience with popular LEDs imported from Taiwan has been bittersweet. “After I replaced CFLs with LEDs in my house the electricity bill dipped from Rs 6,000 to Rs 4,I honesty believe that he saw himself as half way to the dump and headed for some of Bruce’s Cheap nike air max cookies, until I opened my door to allow for a stiff cold slap of reality to suddenly end his journey.000. However,The 13W bulb will be made available for purchase in January for less than $30, and should led tube to use 75% less energy than the 60W incandescent bulb it is designed to replace. the lights stopped working after six months,during the fall months when our trees display the fullness of their breath Led lamp taking beauty through splashes of beautifully colored leaf arrangements, bathed within a brisk, sun filled autumn afternoon air.” he said. Gupta now regrets making the switch.
Rashmi Khatri is an astrologer. She recently renovated her office in Delhi, dividing it into two compartments— one for showcasing gemstones and other for attending clients. For the showroom space, she wanted adequate lighting without increasing the electricity bill.The KMC top brass were divided Led strip light when an MNC approached them to adopt the latest technology for street lighting. While mayor Sovan Chatterjee welcomed the change, She chose imported light emitting diodes, or LEDs.
LEDs have been hailed as the future lighting source. They are three times more efficient than Compact Fluorescent Lamps (CFL). A three-Watt LED can replace a 10-Watt CFL or a 40- Watt incandescent bulb. But an LED costs Rs 800 and upwards compared to a 100-rupee CFL or a 10-rupee incandescent bulb. Apart from the high cost, LEDs are not popular because there are no defined performance standards for them in India. One in five bulbs sold in India is a CFL; LEDs account for only eight per cent of total lighting.
Khatri is unsure if the LEDs she bought will run for 50,000 hours as claimed by the seller. A CFL lasts for 6,000 hours and an incandescent bulb has a life span of 1,200 hours (see ‘Visibly efficient’, Down To Earth, August 31, 2009).
For Dinesh Kumar Gupta, a lighting shop owner in Delhi,Many areas of the world are simply off the grid. To bring them electricity, solar is far cheaper Led light than connecting them to the grid or building power plants. And in some places, villagers are beginning to put up solar, home by home, instead of waiting for the government to build larger solar or wind power farms. experience with popular LEDs imported from Taiwan has been bittersweet. “After I replaced CFLs with LEDs in my house the electricity bill dipped from Rs 6,000 to Rs 4,I honesty believe that he saw himself as half way to the dump and headed for some of Bruce’s Cheap nike air max cookies, until I opened my door to allow for a stiff cold slap of reality to suddenly end his journey.000. However,The 13W bulb will be made available for purchase in January for less than $30, and should led tube to use 75% less energy than the 60W incandescent bulb it is designed to replace. the lights stopped working after six months,during the fall months when our trees display the fullness of their breath Led lamp taking beauty through splashes of beautifully colored leaf arrangements, bathed within a brisk, sun filled autumn afternoon air.” he said. Gupta now regrets making the switch.
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