Lighting is an essential component of everyday life. We use lights to see and to provide the necessary energy to function. Lighting systems are available in various forms, depending on the application. From industrial systems to residential lighting, the level of sophistication can vary greatly. Indoor lighting solutions are usually designed to provide an even distribution of light and to reduce energy consumption. Compact fluorescent lightbulbs, LED lighting strips and high-efficiency lighting systems are all becoming increasingly popular. By making the most of the lighting available, these solutions offer an increased level of convenience and efficiency to the user. Outdoor lighting is a key factor in creating a safe and secure environment for residents, businesses and visitors. Security lights, flood lights and spotlights are all designed to provide illumination when and where required. Motion sensors and timers can also be incorporated into these systems to reduce energy consumption. Smart lighting systems are also increasingly being used for this purpose, enabling users to control lighting levels and other functions from a distance. To summarise, lighting has an important role to play in both indoors and outdoors situations. Modern lighting systems are efficient and designed to optimise energy savings. Furthermore, smart solutions can offer convenience and flexibility to the user. Ultimately, the correct lighting setup can increase energy efficiency, whilst also providing an efficient and secure environment.