TOKYO -- Tokyo Electric Power Co. Holdings will scrap the four Fukushima Prefecture reactors that escaped damage in the 2011 earthquake and tsunami, moving to decommission all of the nuclear power plants the public utility owns in the disaster-stricken region.

The shutdown of the Fukushima Daini plant, which is located just 12km away from the Daiichi Plant crippled by fuel meltdowns, will be formally authorized at the company's board meeting at the end of the month. This marks the first decision by the utility, known as Tepco, to decommission nuclear reactors apart from the Daiichi facilities.

Costs for decommissioning Fukushima Daini are estimated to exceed 270 billion yen ($2.5 billion). While Tepco's reserves are not enough to cover them, the government adopted new accounting rules allowing operators to spread a large loss from decommissioning over multiple years. The company also believes it has secured enough people with necessary expertise to move forward.

Tepco soon will inform Fukushima Gov. Masao Uchibori of its decision. The utility intends to submit the decommissioning plan to Japan's Nuclear Regulation Authority by March next year.

The decision means all 10 reactors in Fukushima will be scrapped. The Daini reactors will be decommissioned in roughly 40 years, sharing the same timetable as the Daiichi site. Tepco owns one other nuclear plant, the Kashiwazaki-Kariwa facility in Niigata Prefecture.

The Daini plant, where each reactor produced 1.1 gigawatts of power, served the Tokyo area for about three decades. Japan's central government sought to restart the complex but faced withering opposition from local residents in Fukushima.

Including the Fukushima Daini facilities, a total of 21 reactors across Japan are now slated for decommissioning. Recent additions include two units at the Ikata plant in Ehime Prefecture and one reactor at the Onagawa facility in Miyagi Prefecture.