The Duke-Progress entity is to be known as Duke Energy and will remain headquartered in Charlotte, North Carolina.
When the $US26 billion plan was announced in January, Duke chairman and chief executive Jim Rogers said he would happily allow Progress chief executive officer Bill Johnson run the show.
When the merger was finalised though Rogers was sitting at the head of the board table and Johnson had abruptly resigned by “mutual agreement”
With the merger out of the way, Duke Energy has a market capitalization of about $49 billion, total assets of about $100 billion and 7.1 million electric customers in the Carolinas Florida, Indiana, Kentucky and Ohio.
It has become one of the US largest utility companies.