To make the informed choice, you need to know the lingo. Learn it here.
Discrepancy between the amount a shipper contracted to use or transport, and actual volumes used or transported. Shippers may be forced to pay an imbalance penalty for variances greater than an established percentage. Marketers may take responsibility for monthly or daily balancing.
Gas service which is subject to interruption on short notice (both sales and transportation). Rates are typically cheaper than firm service.
Gas transported in interstate pipelines to be sold and consumed in states other than that state in which the gas was produced.
Gas sold and consumed in the state where it is produced and not transported in interstate pipelines.