Information on structure of UGS (underground gas storage) operator costs, which are covered by tariffs for natural gas injection, withdrawal and storage. The costs are divided into three levels, so that by summing lower-level cost items one can obtain higher-level cost item.

Information on changes of tariffs for natural gas storage, injection and withdrawal, imposed by the National Energy and Utilities Regulatory Commission (NEURC) . Additionally, the numbers and effective dates of relevant NEURC resolutions are mentioned.

Information on distribution of expenses of UGS operator between tariffs for natural gas storage, injection and withdrawal. Besides, the type of expenditure is also mentioned (conditionally variable, conditionally fixed and mixed). The distribution is provided for by the Resolution of National Energy and Utilities Regulatory Commission №1131 dated 13/06/2021.