The Long Term Development Statements (LTDS) report on a 0-5 year period, describing a forecast of load on the network and envisioned network developments. The LTDS is published at the end of May and November each year.
\nLong Term Development Statement Table 6 indicates the level of new connections interest at each Primary substation. Published 28 November 2025.
\nMore information and full reports are available from the landing page below:
\nLong Term Development Statement and Network Development Plan Landing Page
Quality Control Measures include:
\nThe Open Data Team and Network Insights Team worked together to ensure data accuracy and consistency.
\n\nDownload dataset information: Metadata (JSON)
\nDefinitions of key terms related to this dataset can be found in the Open Data Portal Glossary: Open Data Portal Glossary
To view this data please register and login.
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\nLong Term Development Statement Table 6 indicates the level of new connections interest at each Primary substation. Published 28 November 2025.
\nMore information and full reports are available from the landing page below:
\nLong Term Development Statement and Network Development Plan Landing Page
Quality Control Measures include:
\nThe Open Data Team and Network Insights Team worked together to ensure data accuracy and consistency.
\n\nDownload dataset information: Metadata (JSON)
\nDefinitions of key terms related to this dataset can be found in the Open Data Portal Glossary: Open Data Portal Glossary
To view this data please register and login.
", "abstract": null, "tableOfContent": null, "type": ["Dataset"], "language": ["eng"], "coverage": null, "spatial": "EPN= Eastern Power Networks; SPN= South Eastern Power Networks; LPN= London Power Networks", "temporal_start": null, "temporal_end": null, "relation": "https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-1-circuit-data/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-2a-transformer-2w/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-2b-transformer-data-3w/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-3a-load-data-observed/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-3b-load-data-true/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-4a-3ph-fault-level/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-4b-earth-fault-level/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-5-generation/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-7-operational-restrictions/; https://ukpowernetworks.opendatasoft.com/explore/dataset/ltds-table-8-gt-95-perc-fault-data/", "source": "https://ukpowernetworks.opendatasoft.com/", "replaces": null, "references": null, "requires": null, "conformsTo": null, "hasFormat": null, "hasPart": null, "hasVersion": null, "isFormatOf": null, "isPartOf": null, "isVersionOf": null, "isReferencedBy": null, "isReplacedBy": null, "isRequiredBy": null, "contributor": null, "creator": "UK Power Networks, Company number 3870728", "publisher": "UK Power Networks, Company number 3870728", "rights": null, "accessRights": ["Open"], "license": "CC BY 4.0", "date_start": null, "date_end": null, "available_start": null, "available_end": null, "created": null, "dateAccepted": null, "dateCopyrighted": null, "dateSubmitted": null, "issued": "2021-10-06T00:00:00+00:00", "modified": "2025-11-28T08:31:03.573000+00:00", "valid_start": null, "valid_end": null, "format": ["application/json", "text/csv", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"], "extent": null, "medium": null, "identifier": null, "bibliographicCitation": null, "rightsHolder": null, "accrualMethod": null, "accrualPeriodicity": null, "accrualPolicy": null, "audience": null, "educationLevel": null, "instructionalMethod": null, "mediator": null, "provenance": null}}}}