LNG Storage owns and operates four LNG Storage facilities located at Avonmouth (near Bristol), Dynevor Arms (South Wales), Partington (near Manchester) and Glenmavis (Strathclyde).
The storage facilities liquefy natural gas by cooling it to -160 degrees centigrade and store it in liquid form. They are situated in strategic locations close to areas of high demand or at the extremities of the network. Their key feature is their location and their ability to rapidly revaporise the natural gas, and deliver it to the National Transmission System (NTS). As a result, LNG storage is able to provide a peak gas supply to shippers and supplement National Grid's network capacity. In addition, LNG is used as a contingency against the risk of emergencies such as system constraints, failures in supply or failures in end user interruption.
When an annual service is booked, a quantity of injectability, space and deliverability is reserved for a whole year. The cost of this capacity is invoiced in 12 monthly instalments. In addition to capacity charges, the customer pays commodity charges on the quantities of gas injected in to storage or withdrawn from storage.