Bulgartransgaz EAD in its capacity of an operator of a natural gas storage facility and in accordance with the Rules for the use of Chiren UGS announces a procedure for the allocation of yearly integrated capacity product for trade storage of natural gas in Chiren UGS for gas year 2026/2027.
The allocation procedure for yearly integrated capacity product for commercial storage for gas year 2026/2027 will be carried out on 16.04.2026 in two phases in an electronic environment on the Capacity Booking Platform (the RBP).
Phase 1 starting at 9:00 am will allocate the integrated units. Phase 2 is scheduled to start at 9:00 am on the next day (17.04.2026) and will allocate withdrawal and injection capacity by months within the integrated units allocated in Phase 1. Participants who received capacity within Phase 1 will be informed in due time of the start of Phase 2 in case Phase 1 takes longer than expected.
In Phase 1 the integrated capacity units for yearly capacity product (for a number of units) shall be allocated in an auction using the Аscending clock algorithm in accordance with article 17 of Regulation (ЕU) 2017/459. In the event that the total nominated yearly storage products do not exceed the number of the ones determined to be allocated, it shall be considered that all nominated integrated yearly storage products can be satisfied at start price.
The allocation by months of the injection and withdrawal capacity included in the yearly integrated product shall be made within Phase 2 also via auction using the Ascending clock algorithm.
Information on yearly integrated units of capacity for storage, injection and withdrawal in Chiren UGS that can be applied for is available here.
Rights to take part in the procedure has every Bulgarian or foreign entity who holds signed and effective Contract for access and transport through Bulgartransgaz EAD gas transmission network and Contract for natural gas purchase and sale for balancing.
To take part in the procedure every potential participant must submit a financial security in accordance with the requirements of item 6.2.4.a of the Rules for the use of Chiren UGS, available here.
Information on the procedure for the allocation of yearly integrated capacity units for storage in Chiren UGS and the next procedures for short-term non-integrated capacity products will be published in a timely manner and in the calendar of the Capacity Booking Platform (the RBP).
Guidelines for participation in the auction for yearly integrated capacity product for UGS Chiren on RBP for gas year 2026/2027 will be published in due time prior to the auction on the internet site of Bulgartransgaz EAD in Customer Zone, section Conditions for use of network services, chapter Access to UGS Chiren.
Requests for clarifications and additional information on the announced Procedure for natural gas storage capacity allocation Chiren UGS for gas year 2026/2027 can be submitted in writing by fax to +359 2 925 00 63 or by e-mail to info@bulgartransgaz.bg.