TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Method: In the method above, the portable gas transportation containers comprise high-pressure tube storage containers designed for transport on a tube trailer. Compressing the purified biomethane further comprises compressing the purified biomethane to a pressure in the range of 2000 pounds per square inch (psi) to 3600 psi. The method further comprises fueling a vehicle to be used for transporting the portable gas containers to the consumer site with cleaned compressed biomethane. It also comprises supplying a portion of the compressed biomethane from the biomethane clean-up facility to a fuel cell to generate electricity using the biomethane; routing at least a portion of the electricity generated by the fuel cell to an electric grid operated by a utility company; or routing at least a portion of the electricity generated by the fuel cell to power a gas clean-up skid for drawing the raw biomethane from the biomethane source. The biomethane source is a solid waste landfill, an anaerobic digester, or a wastewater treatment plant. Preferred System: In the system above, the pressurized gas storage container comprises a tube trailer. The gas clean-up skid is configured to compress the purified biomethane to a pressure in the range of 2000-3600 psi. The system further comprises a fueling station for fueling a vehicle to be used for transporting the pressurized gas storage container to the consumer site with compressed biomethane stored in the storage facility; and a fuel cell configured to receive compressed biomethane from the pressurized gas storage container and to use the compressed biomethane to generate electricity. It is further configured to route at least a portion of the electricity generated by the fuel cell to an electric grid operated by a utility company; or it is further configured to route at least a portion of the electricity generated by the fuel cell to power the gas clean-up skid for drawing the raw biomethane from the biomethane source.