Lifetime
As solid-state light sources, LEDs have very long lifetimes and are generally very robust. While incandescent bulbs have an expected lifetime of 1000 hours, LEDs have lifetimes between 60 000 to 100 000 hours.
Environmental
One of the main benefits that LEDs offer. LEDs do not contain mercury, lead-containing solders and other harmful gasses that pollute the environment. Many environmental organisations have endorsed the use of LEDs in lighting. The energy-efficient nature of LEDs also makes them environmentally friendly.
Designability
LED have opened up many design options.
Low maintenance
As LEDs have long lifetimes this reduces the need to replace the bulbs that have failed. The savings on replacement and maintenance costs are tremendous.
Efficiency
LEDs are high-efficiency light sources. White LEDs with efficacies of 25 lm/W and up are commercially available, exceeding the performance of incandescent and some fluorescent sources.
Low power consumption
The low power consumption of LEDs leads to significant energy savings that can often drive the installation of LED-based systems. Many governments are developing solid-state initiatives worth millions of dollars as they are aware of the savings potential of LED based lighting.
Heat
LEDs do not produce heat in the form of infrared energy. It is this energy that makes incandescent and fluorescent hot to touch. This makes them useful in some locations and positions that require low-heat lighting sources e.g. near food and fabric
Instantaneous switch-on
LEDs switch on instantaneously. This is an advantage for extremely hot and cold conditions where breakage can occur.
Color
LEDs are available in a broad range of brilliant, saturated colors (although performance varies across the spectrum), and white devices are also available.