White Room

Digital Lumens' LED Lighting Systems--which save up to 90 percent of lighting energy--have been installed in Americold facilities in three states.The fixtures also reduce AC and chiller power consumption in cold storage warehouses by 20-40 percent by eliminating heat transfer to chilled food.

The Energy Department has concluded in an internal audit that it does not properly track whether manufacturers that give their appliances an Energy Star label have met the required specifications for energy efficiency.

Researchers have made a critical discovery mapping out the energy interaction between transition metal oxides and organic materials, work that could further dye-sensitized solar cells and organic light-emitting diodes (OLEDs).

Many LED companies are reporting large profits as the technology improves and energy efficient lighting becomes more widely adopted.