Ljubljana - Slovenia is counting on nuclear in its energy transition since renewable sources alone will not suffice to cover the production shortfall once coal is phased out given that the country has missed many opportunities already, Infrastructure Minister Jernej Vrtovec said on Tuesday.

"There is potential for more photovoltaic plants and four hydro power plants. We also have some wind potential that we have to harness... But renewables will not be enough," he said.

"Europe's dependence on fossil fuels is reflected in growing prices. The only way to prevent further price growth is by reducing the import of fossil fuels and opening the path to nuclear energy."

The Infrastructure Ministry issued an energy permit for a new unit at the existing nuclear power station in Krško this summer, whereas a 20-year extension of the current unit is in the process of being approved before its existing permit expires in 2023.

Vrtovec said the goal was to have the second unit completed in 2023 or 2034, which he said was "ambitious but feasible" and dovetailed with the planned coal exit in 2033.

"This is why we're in a hurry with unit two and nuclear technologies, we don't want to rely on energy imports to an even greater extent after 2033."