Japan is expected to secure the minimum required power supply capacity this summer, the industry ministry said Thursday, meaning electricity supply will be sufficient during the high-demand season even if none of the country's nuclear reactors resumes operation by then.

Although the government is expected to call on companies and the general public to help save power, for the third consecutive year it is unlikely to set numerical power-saving targets to address supply concerns that have emerged since the onset of the 2011 Fukushima No. 1 nuclear power plant crisis.

All of Japan's 48 nuclear reactors have been offline since September 2013, meaning the world's third-largest economy is getting by without a power source that generated almost a third of its electricity at the time the Fukushima disaster struck.