Fitch Ratings has kept Taiwan Power's long-term foreign currency issuer default rating at AA and national long-term rating at AAA(twn), according to a Monday release.

The issuer default rating is similar to Taiwan's rating, due to an extremely strong potential of government support, the rating agency said.

The company has a leading position in Taiwan's power market and is strategically important to energy security, Fitch said.

The rating agency expects the company's EBITDA margin to jump to between 11.2% and 14.2% in 2025-2028, following a recovery to 8.9% last year.

Shifts in Taiwan's rating or level of government support could lead to future rating actions, Fitch said.