TransCanada Corp will build gas pipelines worth as much as $6.58 billion to supply a Pacific Coast liquefied natural gas facility being planned by the Canadian unit of state-owned Malaysian energy company Petronas.

TransCanada said on Wednesday it plans to build a C$5 billion line, the Prince Rupert Gas Transmission Project, to carry 2 billion cubic feet of gas per day from the massive Montney shale gas field in northeastern British Columbia to the LNG export facility being planned by Petronas's Progress Energy Canada unit at Port Edward.

TransCanada said it will start consultations immediately with aboriginal groups in the pipeline's planned path but that it was optimistic of getting their support.