Keystone XL Pipeline: A Modern Look at Its Impact and Operation
Explore the Keystone XL Pipeline's role in North American energy, its environmental controversies, and the political shifts influencing its future.
Andy Smith, a Certified Financial Planner (CFP®), licensed realtor, and educator, brings over 35 years of expertise in personal finance, corporate finance, and real estate, helping clients achieve their financial goals.
The Keystone XL Pipeline is a highly debated infrastructure project designed to transport crude oil from Alberta’s oil sands in Canada to refineries in the United States, stretching approximately 1,700 miles. Although the project was halted in 2021, recent political developments have reopened discussions about its potential revival, though its future remains uncertain as the original developer has shown no intent to restart construction.
In March 2019, President Donald Trump approved the pipeline's construction permit, reversing prior delays. However, President Joe Biden revoked this permit shortly after taking office in January 2021. In a dramatic political shift, President Trump reinstated the permit in January 2025 during his second term, reigniting debate over the pipeline’s fate.
Key Insights
- The Keystone XL Pipeline was initially proposed by TC Energy (formerly TransCanada Corp.) in 2005.
- Its purpose is to transport heavy crude oil extracted from Canadian oil sands to U.S. refineries.
- The project has faced strong environmental opposition due to concerns over local ecosystems and global climate change.
- Permit approvals and revocations have fluctuated with changes in U.S. presidential administrations.
Understanding the Keystone XL Pipeline
First announced in 2005 by TransCanada Corp, the Keystone XL Pipeline aimed to convert existing natural gas infrastructure to accommodate the increasing production of Canadian crude oil. The pipeline’s route spans from Hardisty, Alberta, through multiple U.S. states, ending at refineries in Texas and Illinois.
The pipeline consists of three main segments: the initial phase connecting Alberta to Illinois, the second phase extending south to Oklahoma and Texas, and the Houston Lateral, serving refineries around Houston, Texas.
While the Obama administration halted new permits in 2015 to address climate concerns, the Trump administration reversed this decision in 2019, citing economic benefits including job creation and energy security. The Biden administration again halted the project in 2021, emphasizing environmental priorities.
How the Pipeline Functions
The Keystone system transports diluted bitumen and synthetic crude oil, primarily heavy oil extracted from Canadian oil sands. This type of oil requires specialized refining processes. The pipeline’s capacity is estimated at over 800,000 barrels per day, moving oil through Montana, South Dakota, Nebraska, Kansas, Oklahoma, and Texas.
Environmental Considerations
Heavy oil production releases pollutants such as particulate matter and hazardous chemicals including sulfides and hydrogen cyanide, raising concerns about air quality and public health.
Environmental and Community Concerns
The pipeline has drawn criticism from environmental organizations, local communities, and political leaders due to risks posed to sensitive regions like Nebraska’s Sandhill area and the Ogallala aquifer, a critical water source for U.S. agriculture. The thicker, corrosive nature of tar sands oil increases the likelihood of leaks and spills, with notable incidents such as the 2019 North Dakota spill releasing 378,000 gallons of oil.
Operational History
The original Keystone pipeline operated from 2010 until its shutdown in 2021. The Keystone XL extension would have resumed and expanded operations, but the developer has not pursued restarting the project.
Climate Impact
According to a 2025 report by the National Resources Defense Council (NRDC), tar sands oil emits 5% to 17% more carbon than initially estimated by the U.S. Environmental Protection Agency, potentially adding 178.3 million metric tons of greenhouse gases annually—equivalent to emissions from 38.5 million cars or 45.8 coal-fired power plants.
What Is Bitumen?
Bitumen is a dense, viscous form of petroleum often called asphalt or tar. It is derived from crude oil distillation and is the primary product transported through the Keystone XL Pipeline.
Conclusion
The Keystone XL Pipeline remains a symbol of the complex balance between energy development and environmental stewardship. While it promises increased oil supply and energy security from a neighboring ally, the environmental risks and climate implications have fueled ongoing opposition. Its future will likely continue to be shaped by evolving political, economic, and environmental priorities.
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