As we wrote earlier in the year, it's time to say goodbye to traditional 40- and 60-watt incandescent bulbs, thanks to a federal phase out passed way back in 2007. It's a big deal as these wattages represent a large chunk of the consumer market.

Not all states are responding to the phase out in the same manner, however, and Home Depot's shining a light on some interesting data. Triple Pundit reports that the home improvement giant, which is also the world's largest retailer of light bulbs, has produced a data-driven map that cross-references sales data of energy-efficient bulbs from the chain from 2012 to 2013 with 2010 U.S. Census data to determine what cities are leading the country in efficient bulb adoption. While there seems to be something of a blackout in the middle of the country, the East Coast is faring pretty well. And while some cities are expected (hi there, Seattle and San Francisco), would you have guessed Hartford, Conn. to be in the top 10? Is your town in the top 50 markets? Read More