"Following the ongoing re-assessment of nuclear plants in the EU, several neighbouring countries will perform similar stress tests," the statement read.
"Armenia, Croatia, Russia, Switzerland, Turkey, Ukraine and Belarus agreed today that they will reassess their existing and planned nuclear power plants, using the stress tests developed by the EU as a reference," the Commission added.
Croatia and Slovenia are the co-owners of the nuclear power plant, located in the eastern Slovenian town of Krsko.
Following a nuclear disaster in Fukushima, caused by a disastrous earthquake and subsequent tsunami in that part of Japan earlier this year, the European Union decided to start checking power plants' resilience to earthquakes and other disasters. There are a total of 143 nuclear power plants in the 27-strong EU bloc.
The checking started on 1 June and should be finished by the end of this year.