March 24 (Reuters) - Energy stocks helped Canada’s main stock index open higher on Wednesday, as crude prices rose more than 2% on supply concerns after a ship ran aground in the Suez Canal. * At 9:31 a.m. ET (13:31 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was up 80.9 points, or 0.43%, at 18,750.7. (Reporting by Amal S in Bengaluru; Editing by Subhranshu Sahu)