Lighting, sometimes referred to as illumination, is the deliberate use of light to achieve a practical or aesthetic effect. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylight. Daylighting (using windows, skylights, or light shelves) is sometimes used as the main source of light during daytime in buildings. This can save energy in place of using artificial lighting, which represents a significant fraction of energy consumption in buildings. Proper lighting can enhance task performance, improve the appearance of an area, or have positive psychological effects on occupants. Lighting continues to be a high priority for talent in commercial and industrial buildings and organizations. Lighting can range from task lighting, which helps people see better to complete a task, to mood lighting, which sets a tone or atmosphere for a facility. As technology advances, lighting designers and engineers have access to increasingly sophisticated solutions for lighting. Advances in LED lighting and controls continue to drive lighting trends and have a significant impact on the design and use of lighting in both commercial and residential buildings. LED lighting has revolutionized the way lighting is designed and used in buildings. It provides a superior quality of light and creates a more comfortable environment while consuming up less energy than traditional incandescent or fluorescent lighting. In sum, lighting plays an important role in modern society, not only in aesthetics and practicality, but also in energy efficiency. With advances in technology making lighting more achievable, there are more and more opportunities to utilize lighting in creative ways.