Compressed gas Whether it is sold as an energy source or a petroleum product used to power engines, compressed natural gas (CNG) is considered by many to be the fuel of the future because of its environmentally friendly characteristics. CNG is manufactured at the newly-constructed NIS plant at the Palić oil and gas field. The procedure of compressing natural gas under high pressure and loading it onto special vehicles filled with batteries of cylinders is technically safe owing to the tailor-made compressors. Natural gas is compressed primarily for the purposes of easier transportation and storage. Its main ingredient is methane, which has the smallest CО₂ emission coefficient value per unit of released energy when compared with other petroleum products, and as such contributes to the improvement of air quality. It is used as an industrial and household heating fuel, as well as an engine fuel for internal combustion engines. It is seen by many as the ‘fuel of the future’, because of its environmentally friendly properties, excellent vehicular performance, and cost-effectiveness. In addition, compressed natural gas enables an easier start-up and gives better engine performance. NIS is the first large petrol station network in the country to include compressed natural gas in its product range, thus confirming once again its position as market leader in innovation for Serbia and the region. NIS continues to develop this activity further, planning to make this form of fuel available to its customers at around 20 locations throughout Serbia by end of 2020. NIS’s “Novi Sad 10” petrol station is the first to retail this product. In July 2016, NIS also started selling CNG at the “Čačak 1” petrol station. NIS intends to expand this activity, and its plan is to develop a retail network of 20 CNG filling stations across Serbia by 2020.