Ravenswood was originally built and owned by of New York Inc. (Con Edison) in 1963. The first two units constructed in 1963 were Ravenswood 10 and 20, each having a generating capacity of approximately 385 . Then, in 1965, Ravenswood 30 (commonly called "") was commissioned with a generating capacity of nearly 981 megawatts. A new 1,000 MW unit was originally planned to be located on the north side of the