Fitch Ratings has affirmed NTPC Long-Term Foreign- and Local-Currency Issuer Default Ratings at 'BBB-'. The Outlook is Stable.

The agency has also affirmed NTPC's senior unsecured rating of 'BBB-', and the 'BBB-' ratings on its USD4 billion medium-term note programme.

The foreign-currency notes and masala bonds issued under the programme have been affirmed at 'BBB-' and 'BBB-emr', respectively.

NTPC is the largest power generation company in India. It accounts for about 15% of India's total installed power generation capacity, and about a quarter of electricity generation in the country. Out of a total installed capacity of 326GW in India, about 67% is thermal. NTPC contributes around 22% to the country's thermal capacity.

Shares of the company gained Rs 1, or 0.63%, to trade at Rs 160.40. The total volume of shares traded was 30,940 at the BSE (11.07 a.m., Friday).