Tokyo Electric Power Co said Tuesday they would ask Japan's nuclear watchdog for the green light to re-fire two of the seven units at Kashiwazaki-Kariwa in northern Niigata prefecture.
The entire power station has been shuttered since around 12 months after the tsunami-sparked meltdowns at Fukushima in March 2011.
While the Nuclear Regulation Authority (NRA) determines if a plant meets safety requirements, the decision to allow reactors to come back online rests with politicians.
"We are very disappointed that you announced you will ask the Nuclear Regulation Agency for permission (to restart nuclear reactors) without any explanation to us," Kashiwazaki mayor Hiroshi Aida told Hirose.
More From This Section
"Such a move can ruin the mutual trust we have been building," the mayor said.
In a meeting that was carried on national television news programmes, Hirose was seen bowing deeply and offering his contrition.
"We sincerely apologise for your having had cause to criticise us for making hasty and sloppy decisions without giving considerations to local opinions," Hirose said.
TEPCO and local governments have signed a deal under which the utility must get local leaders' permission before re-opening the plant.
Although the agreement is not legally binding, TEPCO has admitted it will be difficult to restart reactors if local people are opposed. Public wariness of the once-trusted technology has made nuclear power a politically toxic issue.
All but two of Japan's 50 atomic reactors are offline, shut down for safety checks after the Fukushima disaster, the worst the world has seen since Chernobyl.