It would be the first nuclear plant to restart under stricter safety regulations, which were implemented following the accident in March 2011.
Some residents had tried legal action to stop the reopening of the Sendai complex, run by Kyushu Electric Power Group, which is scheduled for Tuesday.
The country's conservative government wants to resume production of nuclear power. However, in polls, a majority of Japanese citizens are against nuclear power plants.
All of Japan's 48 reactors were put offline following the nuclear disaster at the Fukushima Daiichi plant, which suffered a triple meltdown after it was hit by a magnitude-9 earthquake and tsunami.