Due to sudden problem in Northern Grid and trip of a line in all five units of National Thermal Power Corporation, plant at Unchahar in Rai Bareili has been shut down. <br/><br/>NTPC spokesperson, Santosh Srivastava said since the line is tripped, the five units stopped production from this afternoon. <br/><br/>The total capacity of five units is 1050 megawatt. <br/><br/>Unchahar plant provide power to mainly northern states including Uttar Pradesh and Delhi.