UIG Interactive Data
UIG % by Gas Day - National View (13 main LDZs)
The below chart shows daily national UIG percentage levels for the first (D+1) and last (D+5) run of allocation.
Last modified: 23 April 2025
UIG % by Gas Day
Unit: %
D+1 Allocation
D+5 Allocation
%
Start date:
End date:
Chart data
You can download the raw data that has been used to to create the UIG % by gas day chart below.
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Demand attribution
UIG data now available
Following the launch of the updated Gemini System, UIG data is now available to download on the National Gas Transmission data portal.
National UIG charts
You can view our national UIG charts on the links below.