We like a good Christmas light job as much as the next person, but there are always concerns about energy consumption and the like. 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.
They claim that LED lights are about 60 times as energy efficient as their conventional counterparts, saving the world as well as your dollars. With this kind of hyper efficiency, even if you live in Portal, North Dakota, it'll be a â€œgreenâ€ Christmas. (Ouch!)
Environmental Defense also maintains a good site, complete with a link of retail outlets that vend LED holiday lights.