In recent years, when the word "crisis" is present in every day of our lives, there is hardly a person who hasn't heard that the hieroglyph meaning "crisis" also means "opportunity". Proceeding from the crisis and seeking opportunities, the manufacturers offer more and more options for saving money on equipment and systems that we use in our everyday lives. What is more – without depriving ourselves from the comfort and convenience. The use of absolutely free and affordable solar energy is extremely cost effective and profitable in Bulgaria. Anywhere in the country the sunshine is suitable for the installation of a solar system, which covers up to 80% of the energy needed to heat water for household needs taken as an average annual percentage. The solar domestic hot water systems NIPPON imported by Bittel Ltd. are popular because of their high efficiency, perfect resistance to weather conditions, easy installation and a full equipment. The high quality craftsmanship and smart management of the systems rank them among the most rapidly developing innovative products. The system is constructed so that it allows a year-round use and availability of hot water without depending on the weather – even when the sun is not shining, the collectors capture the light energy and give smaller but completely free contribution for reaching the required temperature of the water. The good insulating properties of the polyurethane foam allow a long-term preservation of the water temperature and very small temperature losses in cold days.