And, just like carbon capture, this process could use a lot of energy. Building the equipment, mining the zeolite, and running the fans would demand power. “It seems it would require significant energy to work, even for a passive system that uses wind to pass air over the catalyst,” says Ed Dlugokencky, an atmospheric chemist at the National Oceanic and Atmospheric Administration. Jackson says that the methane conversion system would ideally run on zero-carbon sources, like wind and solar. And, because the reaction releases energy, he believes it could be possible to re-capture it and use it to keep the operation running.