BRIEF-Canada says conditions changed since TransCanada proposed Energy East

Oct 5 (Reuters) - Canada Energy Minister Jim Carr says conditions have changed since Transcanada Corp

* First proposed Energy East, which now represents additional capacity

* Canada energy minister says cannot predict where markets will go in future, government's job is to ensure people have confidence in regulatory system

* Canada energy minister says natural resource sector vital for growth, not happy that 99 percent of its oil exports go to U.S. Source text for Eikon: Further company coverage: (Reporting by Ethan Lou)