An electric service contract where the supply of electricity can be interrupted by the utility during times of congestion and capacity limitations. Generally, these contracts only apply to large commercial and industrial accounts, which receive a lower rate because the service is a little bit less reliable.
An agreement which allows the local distribution company to temporarily halt the distribution of natural gas to a customer whose marketer did not deliver the gas to Columbia, so that Columbia can meet the demands of its firm service customers
Gas service that is subject to interruption, usually at the option of a pipeline or distribution company or utility, unlike firm service. Usually offered at a discount from the price for firm service