The Pentagon is switching to LEDs.

Cree, Inc. announced that more than 4,200 LR24 recessed LEDluminaires are planned for installation in Wedge 5 of the Pentagon as partof a major renovation currently underway. In a signing ceremony today at the Pentagon, John J. Kubricky, Deputy Under Secretary of Defense for Advanced Systems and Concepts, and Albert C. Ellet, acting director of the Washington Headquarters Service responsible for overseeing the renovation, signed an intra-departmental Memorandum of Agreement kicking-off the initiative to install LED lighting in the Pentagon.
The Cree LR24 luminaires have undergone extensive government testing and business-case analysis, including a preliminary Pentagon installation to meter the fixtures and compare the results to the alternative fluorescent technology. This independent analysis demonstrated a 22-percent reduction in energy usage and improved light quality.
The business-case analysis yielded a payback of less than four years. The payback analysis considered energy savings, lifetime maintenance savings, savings from reduced load on the HVAC system, and elimination of hazardous waste disposal fees for mercury-laden fluorescent bulbs.

Now that is a valuable study. What it says is that LEDs are viable if you have to pay people to change lamps and since the lamps are rated for 50,000 hours (over 5 1/2 years) in continuous use it is like getting the last year and a half free if break even is 4 years. Ultimately their value will be in being able to tune the colors as well as the brightness. Red, green, blue. In any mixture (the LR24 is only red and green). And there is only one way their price can go from here. Down. Making the business case even better.
Cross Posted at Power and Control