FERC also approved a recalculated 1.56 Bcf capacity increase at existing caverns based on cooler-than-assumed cavern temperatures. Altogether, the project would lift the facility's working gas capacity to 55.18 Bcf from the previously certificated 36.0 Bcf. [Want to visualize Chicago Citygate, Henry Hub, Houston Ship Channel or any of our 170+ spot natural gas price indexes? Its 40-mile header system, consisting of dual 24-inch-diameter pipelines, interconnects with seven systems carrying natural gas between supply regions and demand centers across the South. Pickton Gas Storage reached a final investment decision (FID) on a 35 Bcf natural gas storage facility in Northeast Texas this month, after Trinity Gas Storage reached an FID on a 13 Bcf second phase in East Texas and Golden Triangle Storage advanced a 30 Bcf expansion near Beaumont.