Lithuania also demands to suspend the operation of the first power unit of the nuclear power plant.
Energoatom reported all the news on the company's website had disappeared.
The companies signed two cooperation agreements.
Energoatom says 14 power units will operate during the autumn-winter period.
Power unit No.4 of ZNPP was connected to the UESU.
The Ministry of Energy does not indicate the reasons for the termination of supplies.