LED lamps have been around for a while. But new products keep coming out that allow high-efficiency LEDs to replace more incandescent bulbs and drastically reduce energy use at the same time.

Mule Lighting now has their LEDison series of LED lamps which are meant to replace standard incandescent lights for decorative applications. Unlike most other LED lights, these fit into standard Edison-base sockets (hence the name LEDison.)  These can be used just like compact flourescents with no special fixtures required.  

LEDison lamps are being used to replace 10 to 60w incandescent bulbs in commercial applications (like shopping malls). The LED lamps have ten times the service life of the incandescents they replace, and use only 1 watt! An even greater cost savings is realized when the annual maintenance costs of replacing incandescent bulbs is considered.  Unfortunately, they're not yet being mass produced and are probably pretty expensive (since they wouldn't tell us how much they cost.) 

They don't quite produce the amount of light we usually expect from household lamps, so compact fluorescents are still probably a better choice, for now. But progress continues, and these are another neat little step along the way.

via: Specified Lighting Design