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NC State Extension

LED (Light-Emitting Diode) – Defined

Semiconductor devices that produce visible light when an electrical current is passed through them. LEDs are a type of Solid State Lighting (SSL), as are organic light–emitting diodes (OLEDs) and light–emitting polymers (LEPs). (Learn more at Energy Star)

  • Practical info: LEDs use 75% less electricity than incandescent bulbs to produce the same amount of light and last 25,000-50,000 hours (25 to 50 times longer).


Image - Lighting

Lighting – Energy Ind and Security Act

Lighting – Guide to Energy Efficient

Lighting – lumens placard

Lighting – How do I get the most from my CFLs

Lighting – Myths and Facts – You are seeing a number of new light bulbs at your local store. These bulbs—new energy-saving incandescents, LEDs and CFLs— cover the range of color and features you’re accustomed to, yet they use less energy. Let’s clear up some misconceptions about these new lighting choices.