On 14 September, Ontario Power Generation (OPG) announced it had started work for the construction of the 10.4km long Niagara Tunnel Project. The tunnel will be built by Strabag AG using a 14.4m diameter TBM , said to be the largest used in Ontario when boring gets underway in August next year. Strabag won a US$844M design and construct contract in August, of which US$514M accounts for the tunnel scope.