Canadian energy transporter Enbridge announced it is set to invest around $600 million (£374m) to further expand its oil pipeline system in the US and Canada.

The expansion between Hardisty, Alberta and the US border, with a cost of around $400 million (£249m), is expected to increase capacity by 230,000 barrels per day.

The company’s US affiliate, Enbridge Energy Partners, also plans to expand the Lakehead System pipeline between North Dakota and Wisconsin. This expansion is expected to add an additional 230,000 barrels per day of capacity, costing around $200 million (£125m).

Both expansions are expected to be completed in 2015. Enbridge transports and distributes energy across North America and is believed to operate the world’s longest crude oil and liquids transportation system.