National Thermal Power Corporation (NTPC) today announced a 15.37% decline in net profit, on a standalone basis, at Rs 1,779.9 crore for the third quarter ended December 31, 2007 when compared with Rs 2,103.3 crore in Q3FY07. According to a release to the Bombay Stock Exchange, total income increased to Rs 10,093.2 crore for the quarter ended December 31, 2007 from Rs 9,311.0 crore in the quarter ended December 31, 2006.