It is limited by the remaining unused pipeline capacity assigned to an aggregator. Time of Use Meters Electric meters that tabulate usage during specific times of day. Also called interval meters. Transportation costs also include services such as storage of gas, pipeline maintenance, and meter reading. Unbundling Separation of provision of natural gas to the end-user into specified costs for the natural gas commodity, the interstate transportation of natural gas via pipeline to the utility's pipeline, and the delivery of the gas by the utility to the customer.
Similar approach is in place in the electric industry.