"The plant was generating 600 MW till yesterday. It was stopped today due to a technical snag. There was a leakage in a steam pipe, which needed to be plugged immediately," KNPP Site director R Sundar said.
Repairs would be carried out immediately after which power generation would resume, he said.
Power generation at the plant had resumed on January 30 after seven months of shutdown for maintenance, but was suspended on February 5 due to steam leak and was again started.
Work is underway on the second 1000 MW reactor, which is expected to be commissioned later this year.