Hitachi Ltd. is considering freezing its plan to build nuclear reactors in Wales after facing difficulties in finding investors to finance the project's ballooning costs, sources close to the matter said Sunday.

If the Japanese conglomerate freezes the ¥3 trillion Wylfa Newydd plant construction, all of the overseas nuclear projects promoted by the government of Prime Minister Shinzo Abe as part of his growth strategy would have faltered.

Mitsubishi Heavy Industries Ltd. is mulling withdrawing from a nuclear project in Turkey amid swelling safety-related costs following the 2011 Fukushima nuclear accident, while Toshiba Corp. has decided to exit from the nuclear plant business outside Japan after incurring huge losses in the United States.