Imagine having your whole house lit up like Times Square for the cost of burning an ordinary 100W incandescent bulb...and not having to change a light bulb for 10 years? That day is coming very very soon.
Can a significant reduction in US energy usage be as simple as changing some light bulbs? Yes, yes it can. Here's a flood light that only burns 6 watts.
[...]compared to commercial white LEDs, prototypes of the new SPE LED technology produced 30 to 60 percent more light output and luminous efficacy — light output (lumens) per watt of electricity. This means more visible light is produced without increasing energy consumption.[...]
[...]The research was funded by the U.S. Department of Energy