The 480 MW (4 x 120MW) A Station was completed in 1967, and construction of the 800 MW (4 x 200MW) B Station was completed in 1982.
The text describes two power stations: A station with a capacity of 480 MW (4 x 120MW) completed in 1967, and B station with a capacity of 800 MW (4 x 200MW) completed in 1982.