The Liberals say the investigation is focused on David Livingston, chief of staff to former premier Dalton McGuinty.
Conservatives have accused Wynne of using “libel chill” to try and silence the official opposition.
Information and Privacy Commissioner Ann Cavoukian promises her office will release its report into the deleted email accounts next month.
Jim McCarter says the province will save $76 million by not buying the cancelled plant’s electricity.
Wynne asks Auditor General to add Oakville plant to current probe of Mississauga project.