There are  of crude oil pipelines in Croatia, connecting the Port of Rijeka oil terminal with refineries in Rijeka and Sisak, and several transhipment terminals. The system has a capacity of 20 million tonnes per year. The natural gas transportation system comprises  of the trunk and regional natural gas pipelines, and more than 300 associated structures, connecting production rigs, the Okoli natural gas storage facility, 27 end-users and 37 distribution systems.