Japan’s Nippon Steel Corp has restarted a 136 MW coal-fired plant at its Kamaishi works a day after an unplanned shutdown due to a problem with a coal conveyor system, said Tohoku Electric Power Co, which buys the power produced by the plant.

Reuters reports that Tohoku Electric, which serves the northeast regions that were hit by a magnitude 9.0 earthquake and tsunami in March, said it expects to maintain stable power supplies on Thursday, due in part to the unit’s restart.