This data table provides the detailed data quality assessment scores for the Network Development Plan dataset.  The quality assessment was carried out on 31st March. 

The "NDP SPD Primary Substation Polygons" data table provides the geographic areas supplied by the primary substations and the grid supply points (GSPs) in SPD, and the primary substations, grid groups and GSPs in SPM.  

The "NDP Part 2: Network Scenario Headroom Report SPM" data table forecasts post-intervention headroom across all network groups out to 2050. This post-intervention headroom is calculated by combining existing network models, scenario forecasts, and known intervention plans. 

The "NDP Part 2: Network Scenario Headroom Report SPD" data table forecasts post-intervention headroom across all network groups out to 2050. This post-intervention headroom is calculated by combining existing network models, scenario forecasts, and known intervention plans. 

The "NDP SPM Primary Group Polygons" data table provides the geographic areas supplied by the primary substations, grid groups and GSPs in SPM.

The "NDP SPM Grid Group Polygons" data table provides the geographic areas supplied by the primary substations, grid groups and GSPs in SPM.