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California leads the way in new energy efficiency standards

As of this week, 100-watt incandescent bulbs manufactured after Jan. 1, 2011 can not be sold in California stores.

The new law means a former 100-watt bulb will have to use 72 watts or less, or be 28% more efficient. The 72-watt replacement bulb will provide the same amount of light (measured in "lumens") for lower energy costs.

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