Most offices around the world operate during the day. They usually start their work at 7 a.m. and finish it at 4 or 5 a.m. Daylight is an essential resource that is easily accessible to everyone and will likely last for the foreseeable future. It also has the very special property of having the ability to transform an internal space from boring uniformity into a lively and happy experience. The ability to both brighten a place and make it more attractive is one of the main reasons why architects attempt to bring daylight into a building when possible and practical. Since office workers primarily handle papers or computer screens, a well-lit building seems to be necessary. A bright environment can prevent staff from being bored and can be a good friend to their eyes. However, lighting spacious places such as office buildings requires numerous light sources which are now mainly powered by electricity. During the energy crisis of 1970, some of the major OPEC countries increased the price of oil. Before this sharp rise in prices, the energy consumption of buildings was partly ignored. The oil price crisis has led countries to think about the use of renewable energy sources. This was the starting point for the use of renewable energy in buildings. Given the current energy crisis and high electricity costs, the use of artificial light sources does not seem to contribute to sustainable design at all. Furthermore, the high cost of electricity can seriously harm a company's profit margin (Paolo Bertoldi, Bogdan Atanasiu, 2006). While some believe that reducing lamps or using LEDs can achieve an energy-efficient office, there are solutions that suggest using daylight. Since offices operate during the day and are mostly middle of paper. It is recommended to think about natural lighting in the early stages of office building design. In this way, the implementation of advanced daylighting equipment will be much easier in the future. References: 1-MS Mayhoub, DJ Carter (2011) The costs and benefits of using light guidance daylight to illuminate office buildings, Building and Environment, (Vol 46), p. 698-710.2-Paolo Bertoldi, Bogdan Atanasiu (2006), Trends in electricity consumption and efficiency in the enlarged European Union, Directorate General of the Joint Research Centre.3-Grozon Aktas, (2012) Proposals of sustainable design in public interiors of shopping centers, International Journal of Energy and Environment, (vol, 6), p. 109-116.4- M. Andersen, SJ Gochenour and SW Lockley, (2013) Modeling the “non-visual” effects of daylight in a residential environment, Building and Environment, (vol. 70), p. 138-149.