The natural gas price of BGN 352.65 per 1,000 cubic meters includes the component for the "public supply" service to the amount of 4.76 BGN / 1000 nm3, as well as the "public service obligation" component to the amount of 1.35 BGN / 1000 nm3, which covers the expenses of Bulgargaz EAD for storage of natural gas quantities in the gas storage facility in Chiren, according to the Emergency Plan.