The insurance contract covers fire and natural disasters, TPP Maritsa Iztok 2 said in a notice.
The deal was initially signed in August 2019 for a nine-month period.
Most recently, TPP Maritsa Iztok 2's Unit 8 suffered damages from a fire which broke out in June 2019.
The power plant has eight operating units with a total installed capacity of 1,620 MW.
(1 euro = 1.95583 levs)