Enbridge and Borealis Infrastructure are looking for regulatory approval to acquire interests in NextEra Energy Canada’s subsidiary, Upper Canada Transmission.

The three companies, through a joint-venture called NextBridge Infrastructure, intend to bid on the opportunity to construct the Ontario East-West Transmission Tie.

The 230kV line would run between Thunder Bay and Wawa in Ontario. It is estimated to cost $600m and come into service as early as 2017.

With the proposed power line, reliability and the ability to develop renewable generation in the region would increase.

In addition, the transmission line is expected to allow for the retirement or conversion of northern coal facilities.

The partners aim to develop, build, own and operate the power line under the Ontario Energy Board’s regulatory oversight.