In accordance with the previous announcement and article 22.4. of the Storage code, due to the HD measurements on the UGS Okoli, the storage service will be unavailable 96 h in the period from April 04, 2018 from 06:00 h till April 08, 2018 till 06:00 h. In the same period the Operator will conduct activities that will be a result of disconnection of UGS Okoli from the transport system.