It comes from the English LED (Light Emitting Diode) translated light-emitting diode. It is a solid semiconductor body of great resistance that when receiving an electrical current of very low intensity, emits light efficiently and with high performance.
The change of an existing lighting installation for a more energy efficient one (control systems, more efficient lamps, etc.) will involve an initial investment but, in the future, the operation and maintenance costs will be reduced.
An energy efficient lighting system allows for a significant reduction in consumption, without the need to reduce its quality, comfort and lighting level performance.