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In December 2022, the Department of Energy proposed a rule that would more than double the current minimum light bulb efficiency level, to over 120 lumens per watt for the most common bulbs.
This set up performance standards and the phase-out of incandescent light bulbs in order to require the use of more efficient fluorescent lighting. EISA 2007 is an effort to increase lighting efficiency by 25-30%. Opposition to EISA 2007 is demonstrated by the Better Use of Light Bulbs Act and the Light Bulb Freedom of Choice Act.
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The first phase will be followed by a ban on 60-watt-and-higher incandescent light bulbs starting in October 2014. By October 2016, all incandescent light bulbs will be banned in China. The final phase may be adjusted according to the results of interim assessment from October 2015 to October 2016.
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As of Jan. 1, 2012, any bulb that can generate the amount of light produced by a conventional 100-watt bulb, but do so with roughly 30 percent less energy, is eligible for the market. The Basics
By then, the lifespan of mercury vapor lamps had been extended to 16,000 hours, and they could provide up to 40 lumens per watt, whereas incandescent lamps could only deliver 16 to 21 lumens. [1] The first large street installation of mercury vapor lamps in the United States was in Denver, Colorado , on Park Avenue, where they were used ...