The city of Grand Junction, CO, has chosen to increase its storage capacity of bio compressed natural gas (CNG), which is produced at the city’s Persigo Water Treatment Plant. 

This project follows a program enacted five years ago to capture methane produced during wastewater treatment.  The CNG is used to fuel city vehicles. 

Currently, over 75% of the gas is able to be used, but to utilize 100%, additional storage and automation of fueling station systems is needed, according to Grand Junction Utilities Director Randi Kim.

“We built the facility to clean the gas and then pipe it to our fleet fueling station at our maintenance shop,” Kim said. “Over the course of those five years it has been extremely successful. We now are able to fuel up to 70 vehicles, which...