LED lamp - Wikipedia
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MIT's new warm incandescent light bulb is nearly 3x more efficient than LEDs
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TAM ENERGY
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Ultra efficient | Philips lighting
Swap Your Conventional Light Bulbs for LEDs at No Charge! | Sustainability | Washington University in St. Louis
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DOE Proposes to Advance Light Bulb Energy Efficiency
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Efficiency of LED Lighting | Stafford Home Service | Blog
Energy Efficient Lighting | Ferry County PUD
LED vs. CFL Bulbs: Which Is More Energy-Efficient?
