Two of the top natural gas producers in the Lower 48, Southwestern Energy Co. and Range Resources Corp., are expanding their efforts to certify supply in separate agreements with Project Canary. 

In one agreement, Range Resources entered into an ongoing deal with Houston-based Engie Energy Marketing to market its supply under Project Canary’s responsibly sourced gas (RSG) designation.

Denver-based Project Canary partnered with Range last June to certify some of its southwestern Pennsylvania supply on two pads using the TrustWell process, which measures emissions and conditions under which natural gas is produced, with a focus on water, air, land and the community. 

A spokesperson for Engie Energy told NGI that the company’s “involvement in the RSG space has generated...