Data files that have been superseded and/or are no longer in active use. The datasets below are historical and have since been superseded. For the latest system planning data, please go to one of the following pages: - [Distribution Future Energy Scenarios (DFES)](https://connecteddata.nationalgrid.co.uk/dataset/system-planning_distribution-future-energy-scenarios-dfes) - [Network Development Plan (NDP)](https://connecteddata.nationalgrid.co.uk/dataset/system-planning_network-development-plan-ndp) - [Distribution Network Options Assessment (DNOA)](https://connecteddata.nationalgrid.co.uk/dataset/distribution-network-options-assessment-dnoa)