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Each country should provide energy safety, which depends on various factors, e.g. geographic location, accessibility to home energy sources and import of energy carriers, preferably diversifi ed. Another important issue which increases energy safety is the stored reserves. The more of these conditions are satisfi ed, the more stable is the economy and resistant to fl uctuations on the energy market, unexpected economic crises, turmoil in the stock market and the seasonal character of energy demand. The world’s practice in the underground storing of oil and liquid hydrocarbons shows that underground caverns leached out in salt formations are most advantageous for storing purposes. The experience of countries specializing in underground gas storages performed in salt structures dates back to the middle of the 20th century. USA, Canada, and also many countries neighboring with Poland have already invested in their energy safety and developed strategic oil and natural gas reserves in underground storages [10]. The economic development of a country means higher gas consumption. The demand for this product constantly increases; in line with the current trends and the increasing ecological consciousness of the energy market participants, solid fuels consumption should be limited. Natural gas consumption in Poland keeps on growing. In 2014 gas consumption totaled to about 15 billion m3. According to economic predictions this value may increase by 25% in the year 2050. Over 70% of Poland’s demand for gas is covered from import, the rest comes from home resources. Presently, Poland’s annual production has been assessed to about 4.7 billion m3. 80% of import gas comes from the east and its deliveries are regulated by a long-term contract with the Russian Federation. Poland also imports gas from Germany (about 15%), the Czech Republic (about 4.8%) and Norway (0.2%) [2]. This gas-supply structure strongly relies on one source and in a crisis situation the life of the country may

How to localize an Underground Gas Storage (UGS) in a salt structure of the Fore-Sudetic Monocline in light of its geomechanical properties