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The great importance of energy today has brought energy efficiency and sustainability issues to the forefront, and extensive studies are being conducted on these issues. The concept of sustainability was first defined in 1987 as "the process of meeting today's needs without sacrificing the ability of future generations to meet their needs". This definition expresses the conscious consumption of energy resources, the effective use of renewable energy resources, the necessity of environmentally friendly approaches, and the necessity of a balance of energy use between generations without consuming the energy needed for future generations today. Energy Efficiency is defined as "Reducing energy consumption without causing a decrease in the standard of living and service quality in buildings, and in the quality and quantity of production in industrial enterprises". This definition means using less energy to perform the same job. The importance of examining energy efficiency together with human health, environment and economy is increasing. Lighting, which constitutes a large part of total energy consumption, is of great importance in reducing energy consumption and ensuring sustainability with energy efficiency studies. It is stated that the consumption caused by lighting is 28% in residences, 48% in the service sector, 16% in the industry and 8% in the outdoor environment. Therefore, the use of technological, advanced Daylight Lighting Systems in the interior spaces of buildings provides serious contributions to energy consumption in buildings. Daylight and Natural Lighting and Its Benefits Daylight Lighting; is the provision of natural lighting in the desired location by making maximum use of natural daylight during the bright hours of the day - from sunrise to sunset - and it also makes a great contribution to minimizing the energy consumption caused by artificial lighting. The analyses made in the places where Daylight and Natural Lighting are applied clearly show the effects of natural lighting on people. 1. Provides Energy Efficiency and Sustainability with Energy Saving; Daylight and Natural Lighting contributes to lighting even if there is no sun during the bright hours of the day. This means that artificial lighting is turned off for an average of 6-10 hours per day. For example; If Daylight and Natural Lighting are applied in a space where 30 bulbs with 40 watts of power are used for 8 hours during the day, a total of 9.6 kW per day, 288 kW per month and a total of 3,456 kW per year will be prevented from consuming energy. In addition, the CO2 emissions caused by fossil fuels used in electrical energy production will decrease in direct proportion to the decrease in energy consumption. Energy saving means less electricity production and less fossil fuel use. CO2 trade, which is applied in Europe and will soon be implemented in our country, has also gained great importance. In short, CO2 trade will allow a business to credit the difference when it emits less than the amount it is entitled to emit and sell it to another business or state that emits more than it is entitled to. In Europe, 1 ton of CO2 is 1 credit and the price is 24 euros. Energy savings in lighting will provide a significant decrease in CO2 emissions. 2. Reduces Cooling Loads with Cold Lighting; Artificial lighting fixtures create a heat load in the environment where they are used. Therefore, the need for cooling increases due to the heat generated in the space. In this case, it means that air conditioning units work more and energy is wasted. In environments with cold lighting, there is no heat load. This means that air conditioning systems work less and more energy is saved. 3. Creates Positive Psychological and Physiological Effects on People; Daylight is a basic necessity of life. Studies have shown that health problems such as depression, sleep disorders, anxious and tense moods decrease in people who spend time in naturally illuminated spaces with daylight. In addition, it has been found that the happiness hormones serotonin and endorphin are more, and it has been observed that people who are exposed to daylight are less likely to have psychological problems. 4. Increases the Performance of Staff Working in Offices; It has been observed that the performance of staff working in offices increases by 15-20%, the time they spend on rounds is shortened, and staff who are psychologically more comfortable are more successful in their jobs. This also returns to the company where the staff works as a financial gain. 5. Increases Student Success Rates in Schools; In tests conducted on 21,000 students in 3 schools located in California, Washington and Colorado, it was observed that students' success in classrooms with natural daylight increased by 10-20% in math tests and 18-26% in reading. However,It has also been revealed as a result of the analyses that it provides students with easier and longer attention and that they are more psychologically comfortable. 6. Increases Sales Rates in the Service Sector; It has been observed that sales rates have increased in the retail sales sector. As a result of the analyses conducted in a shopping mall in the USA, the sales rate in 1 store illuminated with natural daylight has increased by 28% compared to 11 stores illuminated with artificial lighting. 7. Increases Quality in Industry and Industrial Facilities; With natural daylight lighting in the industry, the attention of workers has increased, thus error and accident rates have decreased, efficiency and productivity have increased and financial gain has increased in direct proportion. Daylight Tube Lighting System Daylight Tube Lighting System; It is a technological system that takes daylight from the outside environment in a controlled manner, carries it to the interior spaces and provides comfortable lighting by turning the disadvantages of daylight into advantages thanks to its structure. Its features such as yellowing resistance, preventing heat gain, UV resistance, not creating a greenhouse effect, having a simple structure and having almost no operating costs make it stand out from other natural lighting solutions.IA Daylight Tube Lighting System has different models and additional accessories to provide solutions to different user groups. Energy being the most important issue and problem of our day, the decrease in energy resources along with consumption and the fact that prices increase accordingly have made it mandatory for us to use renewable and infinite energy sources. Especially in terms of lighting, which consumes a large part of the energy in the world, turning to Natural Lighting with Daylight is our responsibility for today and our future. FORM Industrial Facilities, which is aware of this responsibility, has realized the production of the Daylight Tube Lighting System for the first time in Turkey in its factory located in Ankara. With this production, the technology brought from abroad, which has high costs and therefore long return periods, has both contributed to the country's economy and started to be offered to the end user at lower costs with the production of the first domestic production SUNVIA Daylight Tube Lighting System by Form Industrial Facilities. Therefore, in addition to the advantages of daylight, energy saving has been achieved while the return periods have reached acceptable periods. Sunvia Daylight Lighting System is preferred in shopping malls, factories, offices, warehouses and individual uses, in other words, in every area where lighting is needed. Working Principle • During the day (from sunrise to sunset), the special dome located outside collects daylight. • The daylight entering the system comes to the reflective tube with high reflectivity. The light reflects a certain number of times in this tube. • The Lens, which is the exit point of the system, distributes the light coming from the tube homogeneously to the desired area to be illuminated. There are 3 basic parts that make up the system. 1. Acrylic Dome; It is the part of the system located outside. The dome is produced from a special material that collects daylight, has high strength and yellowing resistance, and high light transmittance. The dome, which is 5 mm thick, has 95% light transmittance and 5.1 W/m2C heat transfer coefficient. It is resistant to 12 Kj/m2 impact strength and can resist different types of precipitation and hard impacts. 2. Reflective Tube; Natural daylight entering the system from the dome reaches the UV-resistant tube made of silver-aluminum alloy, which has a 99% reflectivity feature. In this tube, which works on the principle of light reflection on reflective surfaces, daylight travels in the tube with high reflectivity. Standard 125 cm and 60 cm tubes can be adjusted depending on the height of the installation location. 3. Lens (Diffuser); The lens is the starting point of the system and ensures a homogeneous light distribution in the location to be illuminated. It has high light transmittance. It has a good insulation feature against electrostatic charges. SUNVIA Lenses, which are extremely resistant to UV radiation, can be used for many years under the sun. There are types with prismatic and linear surface structures according to the desired light distribution in the location. Square and round lenses can be used in order to adapt to the architectural structure. The performance of the system is related to the brightness level of the external environment. In clear, sunny weather, the system performance is high. The height of the space, the direction of the area where the acrylic dome will be placed, and the length of the reflective tube used in the system directly affect the system performance. The direction of the dome, which is usually mounted on the roof (it can also be mounted on the building facade or in the garden depending on the situation), should be built in an area where it can receive daylight from sunrise to sunset (it is healthy to be on the south facade), and where there are no buildings, trees, etc. that will cause shading. The correct determination of the dome direction and the area where the installation will be made during the installation will increase the light efficiency to be obtained inside. SUNV