The Uniform Network Code (UNC) is the hub around which the competitive gas industry revolves, comprising a legal and contractual framework to supply and transport gas.
It has a common set of rules which ensure that competition can be facilitated on level terms. It governs processes, such as the balancing of the gas system, network planning, and the allocation of network capacity.
The introduction of the UNC came about following the sale of National Grid’s four Distribution Network (GDN) businesses. While each new GDN owner, along with National Grid Gas, is still required to produce its own Network Code, to prevent inappropriate fragmentation the substantive provisions of these Codes are incorporated by reference to a common document known as the UNC. If you wish to discuss whether you need to be a party to this code and, if so, how to become one, please contact the Joint Office of Gas Transporters directly.
Uniform Network Code Modifications
Our decisions on proposed changes to this code are included below.