What are transmission pipelines?

Transmission pipelines are large, underground pipelines that transport oil and gas products over long distances.

Because they are unseen, people may not know much about Canada’s extensive transmission pipeline system and how it’s built, managed and maintained. CEPA members (Canada’s transmission pipeline companies) operate 119,000 kilometres of pipeline in Canada – that’s almost three times the length of our national highway system.

These pipelines transported 1.2 billion barrels of liquid petroleum products and 5.4 trillion cubic feet of natural gas in 2015. CEPA members transport 97 per cent of Canada’s natural gas and onshore crude oil production from producing regions to markets throughout North America. The value of these exports in 2014 was $81 billion.

But how do pipelines touch our daily lives? Seventy-two per cent of the energy Canadians need is supplied by oil or gas, and most of energy is delivered by pipelines. That’s why it’s important to understand their role and how they operate.

How Pipelines WorkHow do pipelines work?

You Asked

How often are pipes replaced? Are there regulations stating replacement intervals depending on type of pipe used? Or are they only replaced if anomalies are found? If so, how often are pipelines inspected according to both provincial and federal regulations?
Ask a question

We want to keep Canadians informed about pipelines, so if you have any questions, please fill in the form below and we’ll respond as soon as possible.

Myth vs Fact

Irreparable environmental damage from pipeline spills is inevitable
Discover the truth