Christmas lights on the house, in the window, on the tree. Everwhere you look, but what about the energy consumption? Green Home, a pioneering outfit that’s run out of a basement in San Francisco’s working-class Richmond District, offers a good array of LED Christmas lights that saves energy (and money). Bulbs are available in both traditional (starting at $12.50) and globe styles (starting at $15) from Green Home.

While LED string lights use much less electricity, reduce pollution from power plants and last longer, they stay cooler. And though they cost more than traditional strings of lights up front, the electricity savings easily make up the cost difference within a season or two. Green Home claims claim that LED lights are about 60 times as energy efficient as their conventional counterparts.

Environmental Defense also maintains a good site, complete with a link of retail outlets that vend LED holiday lights.