The US Department of Energy (DOE) continued to test Philips Lighting's L-winning LED lights. The winner of this L award did not fail during the 20,000-hour test. 
Philips won the L award for LED lights
The US Department of Energy released a report of its test of Philips' L-winning LED lights. The LED lamp provides illumination equivalent to a 60 watt retrofit luminaire and completes the task of 20,000 hours of trouble-free operation. According to the report, 200 samples of Philips are still running after 20,000 hours of operation. The initial output lumen maintenance rate is maintained above 100% on average, and the ambient temperature for testing is maintained at 45 °C. Based on the test results, the Department of Energy believes that the luminaire can provide more than 18 years of trouble-free lighting for the average household.
A report released by the US Department of Energy concluded that the energy cost per LED can be as high as $20, which makes Home Depot's $30 LED light more competitive.
Not only that, but some utilities across the United States will also give kickbacks to consumers who purchase this light bulb, and Efficiency Vermont offers consumers a $20 refund through the Home Depot store. Mid-state Power Supply companies in southern Minnesota offer $20 rebates for businesses and $15 for consumers. Puget Sound Energy in Washington State offers consumers a $10 refund plus a $5 discount coupon available at the Home Depot store and a $20 refund for commercial customers. The official website of the L Awards also lists a complete list of other offers in Illinois, Colorado and Massachusetts.
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