Daily UAG data has been published on the National Grid website since October 2012. Weekly updates are made to this information and cover the period from 1 March 2007 up to 7 days previous. Due to the process of data close out (Day plus 5 and Month plus 15) the recent values are subject to change and is available via the following link:
National Grid regularly reports on our activity to investigate potential causes of UAG, the most recent report was published in April 2014. This report covers the latest UAG trends and provides updates of National Grid's data analysis and meter validation activities. This is available via the following link:
The previous reports are available via the following links:
These reports and activity discharge National Grid Gas's (NGG's) responsibilities under Special Condition 8E (from 1 April 2013)
"Requirement to undertake UAG Projects to investigate the causes of Unaccounted for Gas (UAG)".
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