Shell's (SHEL) LNG Canada project attracts buyers mainly because it uses the Canadian Alberta Energy Company, or AECO, price index as a benchmark, which is lower than the Henry Hub price in the US, Reuters reported, citing Shell Chief Executive Wael Sawan.

"What is particularly attractive about LNG Canada in today's world, retrospectively, is the AECO indexation," Sawan reportedly said. "And so that differential between AECO and Henry Hub, not to mention the proximity to Asia, all of that makes it a particularly attractive project, and it will be one of the lowest carbon projects anywhere in the world."

Shell shares were up 1.4% in recent premarket activity Tuesday.

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