Seeking to reduce the carbon footprint of its trash collection fleet, Atlanta has opened a second compressed natural gas filling station.

The new CNG fueling station, at the Solid Waste Lakewood Facility in southwest Atlanta, has the capacity to fuel overnight 20 vehicles serving up to 96,000 residents a week, officials said. A single fill is enough to power a truck an entire day.

“By installing and maintaining our own, cleaner-burning CNG fueling stations, the city of Atlanta will see immediate fuel cost savings by as much as 50 percent and a reduction in carbon emissions by 13 to 21 percent,” said Public Works Commissioner Richard Mendoza.

The CNG pump is the city’s second after one at the Maddox Park Solid Waste Facility in northwest Atlanta. Each station can “time fill” up to 30 collections vehicles overnight and has a two-hose “fast fill” dispenser to top off the trucks and fuel other CNG vehicles.

Atlanta Gas Light Co. is building the fuel facilities, funded by $2.5 million from an $11.6 million Georgia Public Service Commission program to develop CNG stations in the state.