Lighting is the basic requirement of any facility and it impacts the day-to-day activities of the people. This accounts a considerable amount of total energy consumption in domestic, commercial and industrial installations. There have been major improvements and innovations in lighting technologies which can offer a great potential for energy savings in many lighting applications such as household lighting, street lighting, hospitality and retail spotlights, office and industrial lighting, etc. The following are the techniques or types of energy efficient lighting which are commonly practiced as energy-saving opportunities: Re-lamping with Energy-Efficient Lights: The two most popular choices of energy efficient light bulbs include CFLs (compact fluorescent lamp) and LED (light emitting diode) lamps. LED lamps use 75 percent less energy than traditional incandescent and 50 percent less energy than that of a CFL. Lighting Sensors: Lighting can be controlled with the use of various sensors to allow the operation of lamps whenever they are needed. These sensors detect the presence of humans, motion, timing or occupancy and based on the sensor output, it switches the lamps ON and OFF. Types of these controls include infrared sensors, automatic timers, motion sensors (PIR and ultrasonic sensors), and dimmers. Connected Lighting Systems: Centralized control systems are most commonly used in street light control. The popular centralized control is the SCADA (supervisory control and data acquisition) system which ensures remote control of operation of street lights from a central location. Replacement of Existing Fixtures and Ballasts: Some fixtures can absorb more than half of the illumination emitted the bulb that reduces the efficiency of the lighting. The higher efficiency fixtures can emit more light and hence one can save energy and money. Such fixtures consist of reflectors to direct the light in a desired direction. All discharge lamps require a ballast for achieving required operation. Conventional magnetic type ballasts cause power losses which is typically 15 percent of the lamp wattage. In today’s market, many electronic or solid state types of ballast are available which can save 20 to 30 percent energy consumption over standard ballasts.