BUCHAREST, Dec 29 (Reuters) - Romania's Nuclearelectrica reconnected its first nuclear reactor to the national grid early on Monday after fixing a technical problem, it said in a statement.
It said the reactor was kept in power during the repair and was reconnected to the country's national grid at 0415 GMT on Monday.
Nuclearelectrica shut its second nuclear reactor on Dec. 23 to fix a glitch and reconnected it to the grid on Dec. 26.
Nuclearelectrica has two 706 megawatt reactors at Cernavoda on the river Danube, accounting for roughly a fifth of the country's power production.
Reporting by Radu Marinas, editing by Louise Heavens