LED is an abbreviation of Light Emission Diode, and is a device which emits light by flowing a current to the p-n junction like a semiconductor laser (LD). It emits various wavelength lights in the ultraviolet, visible and infrared regions, corresponding to its band gap energy. In particular, white LEDs offer long-life and low energy consumption compared with incandescent light bulbs and fluorescent lamps, and thus, are now increasingly used for lighting.

Energy Efficient. LED lights are up to 80% more efficient than traditional lighting such as fluorescent and incandescent lights. 95% of the energy in LEDs is converted into light and only 5% is wasted as heat. … Less energy use reduces the demand from power plants and decreases greenhouse gas emissions.

Making the switch to LED light bulbs offers significant energy savings over incandescent, halogen and compact fluorescent alternatives. On average, LEDsconsume 80% less energy when compared to incandescent light bulbs. … Using these lower wattage LEDs can reduce overall CO2 emissions, and reduce your carbon footprint.

LEDs have a rated life of up to 50,000 hours. This is approximately 50 times longer than a typical incandescent, 20-25 times longer than a typical halogen, and 8-10 times longer than a typical CFL. Used 12 hours a day, a 50,000 bulb will last more than 11 years.