Rockies Express Pipeline (REX), which moves 4.4 Bcf/d to Midwest markets from key producing basins in the Rockies and Appalachia, is set to become the nation’s first interstate natural gas transmission system certified by Project Canary.

REX owner Tallgrass Energy LP announced the multi-year partnership with Project Canary on Tuesday. 

“This first-of-its kind engagement underscores the critical importance of natural gas transmission systems in the energy transition,” said Tallgrass President Matthew Sheehy. “Customers want assurances that natural gas is produced responsibly and being transported via low emissions pipeline systems. 

“This agreement with Project Canary validates Tallgrass’ commitment to being a leader in sustainability and will allow REX to measure,...