AECL issued the construction deal in 1969 for the 1st BHWP unit (BHWP A). Commissioning of BHWP A was accomplished by Ontario Hydro from 1971 via 1973, While using the plant getting into assistance on 28 June 1973, and style generation ability becoming achieved in April 1974. Because of the success of BHWP A and the large amount of significant h2o