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LTDS Tabular Model

The Long-Term Development Statement (LTDS) provides essential information to assist current and prospective users of National Grid Electricity Distribution’s (NGED) network in identifying and assessing opportunities for new or additional use of our distribution system. More information can be found at National Grid – Long Term Development Statement.

The LTDS model in tabular format contains only essential data relating to each of NGED’s four licence areas, covering the Extra High Voltage (EHV) systems (132kV, 66kV, and 33kV) down to 11kV at primary substations. This dataset forms part of the historic LTDS and is being superseded by the LTDS Common Information Model.

Contents

The data files below contain tabular data related to the latest LTDS, containing the following in relation to NGED-owned assets:

  • Detailed electrical information on plant and mains
  • Measured and forecast substation demand, as per our Distribution Future Energy Scenarios
  • Firm demand capacity
  • Calculated fault level
  • Interest in connections to our network
  • Planned reinforcement work

Purpose

This dataset is intended for use by parties seeking to connect to NGED’s network or develop solutions that require detailed network information. It is provided under NGED’s licence obligations and Ofgem’s Form of Statement requirements.

The LTDS model in tabular format contains only essential data relating to each of NGED’s four licence areas, covering the Extra High Voltage (EHV) systems (132kV, 66kV, and 33kV) down to 11kV at primary substations. This dataset forms part of the historic LTDS and is being superseded by the LTDS Common Information Model.

Contents

The data files below contain tabular data related to the latest LTDS, containing the following in relation to NGED-owned assets:

  • Detailed electrical information on plant and mains
  • Measured and forecast substation demand, as per our Distribution Future Energy Scenarios
  • Firm demand capacity
  • Calculated fault level
  • Interest in connections to our network
  • Planned reinforcement work

Purpose

This dataset is intended for use by parties seeking to connect to NGED’s network or develop solutions that require detailed network information. It is provided under NGED’s licence obligations and Ofgem’s Form of Statement requirements.

Data Files

Name Format Last Changed Download
DSA095 - LTDS Tabular Data Sharing Assessment.pdf pdf
8 hours ago
LTDS Table 1 Circuit csv
8 hours ago
LTDS Table 2a Two-winding Transformer csv
8 hours ago
LTDS Table 2b Three-winding Transformer csv
8 hours ago
LTDS Table 3 Demand csv
8 hours ago
LTDS Table 4 Fault Level csv
8 hours ago
LTDS Table 6 Interest in Connections csv
8 hours ago
LTDS Table 7 Planned Work csv
8 hours ago
LTDS Attachment 8 Node csv
8 hours ago

Additional Info

Field Value
Uploaded Date December 3, 2025, 16:19 (UTC)
Creator National Grid Electricity Distribution
Created Date December 3, 2025, 00:00 (UTC)
Rights NGED Open Data Licence
Coverage All Regions
Contributor Digitalisation & Data
Identifier LTDS- TAB
Publisher National Grid DSO
Relation LTDS
Language EN
Data Classification Open
Update Frequency 12 Months

Integrate this dataset using cURL

# Get a list of dataset's resources

curl -L -s https://connecteddata.nationalgrid.co.uk/dataset/ltds-tabular-model/datapackage.json | grep path

# Get resources

curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/ae11f56a-159b-4aa7-9a50-7729adcbadc3/download/dsa095-ltds-tabular-data-sharing-assessment.pdf
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/7892e22f-e489-49fa-a582-b1384006e4e2/download/ltds-table-1-circuit.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/8c964d61-a7fb-41e7-99b4-6032d063a8c6/download/ltds-table-2a-two-winding-transformer.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/56033622-8ed7-4425-916c-82a030df4822/download/ltds-table-2b-three-winding-transformer.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/0ac103b3-5ee0-44e0-be31-51cea65aac7c/download/ltds-table-3-demand.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/3bd0243c-71dd-4cdd-9ca9-57e6eb79d61f/download/ltds-table-4-fault-level.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/6cfcd593-ea88-4d72-ba8b-bba1ae89b9ff/download/ltds-table-6-interest-in-connections.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/7d6fbbe5-6774-41e8-810d-1200354afef6/download/ltds-table-7-planned-work.csv
curl -L https://connecteddata.nationalgrid.co.uk/dataset/5c3c9ca0-5c57-4cdc-99be-f31e38d1e825/resource/a92da9e4-2010-4406-b86a-825cd65761d6/download/ltds-attachment-8-node.csv