The company's standalone net profit was Rs 2,360.81 crore in the corresponding period of the previous fiscal, a BSE filing said.
Its total income during the third quarter was Rs 24,308.01 crore, a rise of 15.27 per cent compared with Rs 21,087.84 crore a year ago.
During the nine months up to December 2018 also, the company's net profit was nearly flat at Rs 7,399.57 crore, compared with Rs 7,417.58 crore in the year-ago period.
During the April-December 2018, NTPC's total income was Rs 69,633.95 crore, an increase of 13.06 per cent as against Rs 61,590.12 crore in the year-ago period.
The company has reported a net profit of Rs 10,343.17 crore for 2017-18 with total income of Rs 85,207.95 crore