Old Pipeline, New Purpose: CO₂ Moves In Fast Lane

Tallgrass converts a gas line into a carbon pipeline, cutting costs and speeding up America's climate strategy.

20 Feb 2025

America’s carbon capture ambitions just got a new express lane.

Tallgrass Energy is transforming a dormant natural gas pipeline into a high-volume corridor for carbon dioxide. The 392-mile Trailblazer pipeline will soon ferry up to 16 million metric tons of CO₂ each year from ethanol plants in Nebraska and Colorado to secure storage sites in Wyoming.

What sets the project apart isn’t the scale, but the strategy: reuse, not rebuild. Instead of laying down new pipe, a process often slowed by permitting battles and local resistance, Tallgrass is retrofitting what’s already in the ground. It’s faster, cheaper, and more likely to get buy-in from wary communities.

“This flips the script on CO₂ transport,” said one energy analyst. “It shows that we can repurpose old infrastructure to meet today’s climate goals.”

That repurposing comes at a critical time. Carbon capture and storage (CCS) is gaining traction in U.S. climate policy, but the infrastructure to move captured CO₂ is lagging. Trailblazer sidesteps many of the usual obstacles and offers a practical blueprint for others to follow.

Still, moving CO₂ isn’t as simple as pumping gas. The pipeline must be retrofitted to handle the dense, pressurized gas safely. Tallgrass says it’s adding fiber-optic sensors and real-time leak detection systems to meet strict safety standards.

Industry leaders are watching closely. The U.S. has thousands of miles of idle or underused pipelines, many of them ripe for similar makeovers. If Trailblazer proves successful, it could signal a faster route to scaling up carbon transport across the country.

In the race to decarbonize, every shortcut counts. And if Tallgrass has its way, more of yesterday’s fossil fuel highways may soon be rerouted for climate progress.