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Calgary, Alberta, Canada
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Pipelines are a safe, efficient, and reliable way of moving energy products over long distances. Alberta's total length of pipelines is 450 750 kilometres and growing, averaging about a 2% increase per year over the past five years. As of 2025, the status of about 42% of AER-regulated pipelines was either discontinued or abandoned, an increase of about 16% over the past five years. Several factors may account for this increase: Pipelines are made from a variety of materials. About 85% of Alberta's pipelines are steel. The remaining 15% of pipelines are mostly polyethylene, fibreglass, or reinforced composite materials (i.e., nonmetallic materials) that are less susceptible to corrosion compared with steel. Most pipelines have a diameter of 6 inches or less (classified as nominal pipe size or NPS 6). These small-diameter pipelines carry production from individual wells to nearby processing facilities. Pipelines with 12-inch diameters or larger account for only 7% of the AER-regulated pipeline inventory. Most pipelines in Alberta are operated by companies that discover and produce oil and natural gas.