• Power and gas networks

    UIG trends and reform options under UNC781R

    Identification of Unidentified Gas (UIG) and its allocation has been a contentious issue for some time, there are a range of views across the gas industry on how it could be improved. In this 'Chart of the week', Hursley Moss discusses the recent trends of UIG and the possible reform...

  • Regulation and policy

    Chart of the week | UIG UNC SOS

    Unidentified gas (UIG), continues to create issues for shippers and suppliers alike. Since the introduction of new gas settlement arrangements in June 2017, the UIG process has been problematic. The nub of the issue is that the initial allocation of UIG volumes can range between -15% and +25% of all...