Six-digit number at the top of a natural gas invoice.

The process of equalizing a shipper’s receipt of gas into a pipeline with withdrawals out of a pipeline system. This can be done daily, monthly or seasonally.

The difference in the market value of natural gas at two separate physical locations at the same point in time.

The quantity of heat required to raise one pound of water one degree Fahrenheit.

A buy order at the current market offer price for a specific volume and month. Buy at market orders are immediately executed at the best current market offer obtainable. This type of order gives the customer the flexibility to take advantage of current market pricing or stop themselves out in real time.

An entity that holds the rights and obligations to interstate pipeline capacity; the entity can transfer those rights and obligations to another entity.

100 cubic feet.

The mechanism by which a utility periodically adjusts its prices in order to compensate for changes in the gas acquisition costs.

Physical location where gas is delivered by an interstate pipeline to a local distribution company.

The sequential production of electricity and useful thermal energy from the same energy source.