TransCanada continues to cultivate a high quality portfolio of growth opportunities. Long-term contractual arrangements, along with our expertise in developing, building and operating large scale energy infrastructure gives us confidence these projects will deliver service to customers and long-term returns to shareholders. Consideration is given to new markets with good fundamentals where TransCanada has or can develop competitive strengths.
Pipeline projects are being pursued to diversify the business and add incremental value to existing assets. Key areas of focus include greenfield development options to connect our natural gas pipelines to northern gas reserves and emerging Canadian and U.S. shale gas supplies, and transporting crude oil from the Alberta oil sands.
Our network of wholly owned pipelines extends approximately 57,000 kilometres (35,500 miles) across North America.