Hitachi said “no formal decision” has been made over the future of a UK nuclear plant following a report it would halt construction.
The Nikkei Asian Review reported the firm’s board would be likely to decide to suspend all work on the Wylfa Newydd plant next week.
Shares in the Japanese company jumped 8% after the report.
In December, the firm said it would do its utmost to ensure the nuclear power facility went ahead.
It followed mounting speculation