Tallgrass has entered an agreement with Project Canary to develop a program for the independent monitoring and sequestered carbon volume verification at its Eastern Wyoming Sequestration Hub project, the companies announced on Feb. 9.

The agreement between the two firms advances Tallgrass’ commercial-scale sequestration hub project previously announced in January and builds on the relationship established between Project Canary and Tallgrass in 2021 through the Rockies Express Pipeline.

Based in Leawood, Kan., Tallgrass is an energy infrastructure company owned by an investor group led by Blackstone Infrastructure Partners and including Enagás SA, GIC, NPS and USS.

“Precise measurement and validation of sequestered volumes is a critical component of a successful, commercial-scale CO2 sequestration hub,” Kyle Quackenbush, Tallgrass Segment president, said in a press release.

As part of the project, Tallgrass plans to drill a characterization well and Project Canary, the Denver-based environmental assessment ESG data firm, will deploy Canary X continuous emissions monitoring units and conduct additional periodic reservoir analysis at the project site to verify carbon dioxide volumes remain permanently sequestered. The high-fidelity, laser-based continuous monitoring units have a detection level as low as <1ppm and report data simultaneously to a cloud-based monitoring dashboard.

“The Tallgrass team demonstrates what the net-zero measurement economy demands—bold action to verify that every molecule of CO2 put underground stays underground. Their leadership is what a net-zero future needs,” said Chris Romer, CEO and co-founder of Project Canary. 

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