From 1st June 2024, you will need to authenticate API calls to the Connected Data Portal by supplying an API Token. Information on creating and using API Tokens can be found on the API Guidance page.
Data Groups
This group includes data relating to connections to the distribution network, such as the Embedded Capacity Register, low carbon technology, new connections and smart metering data.
This data group includes historic data and real time electricity demand
Data sets related to network flexibility requirements and zones, trades, procurement and dispatch information.
Innovation is core to our business strategy. We always seek to find better ways of working. We have adopted many innovative ideas into day to day operations that improve the efficiency and effectiveness of the way we deliver our services to customers.
Information and data related to network assets and system operation; for example the various Long Term Development Statement tables.
Looking and planning further ahead, and doing so in a strategic and cost-effective manner, is key to achieving National Grid’s vision of being at the heart of a clean, fair and affordable energy future. The data in this section provides insights into assumptions for future demand growth under various scenarios (DFES), network constraints and solutions identified over a 10-year period (NDP), and network investment decisions following cost benefit analysis and flexibility procurement, where applicable (DNOA).
Import, Generation and Demand values at half hourly granularity per transformer for the previous two years from 31st March 2019.
When launched, Electric Nation was one of the world's largest home smart charging trials with nearly 700 EV owners taking part in the 18-month trial. Between them, our trial participants provided data for more than 2 million hours of car charging...
Make and Break fault level data from the 10 Fault Level Monitors installed as part of the FlexDGrid Low Carbon Networks Fund innovation project
Voltages at half-hourly granularity for all transformers at GSP, BSP & Primary level across South West, South Wales, East Midlands & West Midlands, between April 2019 - April 2021.
This dataset contains the results of a real-time, centralised voltage control system for 33kV and 11kV electricity distribution networks, called System Voltage Optimisation (SVO). System Voltage Optimisation dynamically adjusts the previously...
The NGED Projects Connections Reforms Outcomes contains details of all projects submitted by National Grid Electricity Distribution (NGED) as part of the CMP435 process. The outcome dataset includes only those projects managed directly by NGED and...
The NGED Connection Reform Project Register contains details of all projects submitted by National Grid Electricity Distribution (NGED) as part of the CMP435 process. The register includes only those projects managed directly by NGED and therefore...
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...
The connection queue will be provided when the Connection Reform queue has been confirmed to NGED by NESO in December 2025.
The relationship from every node to any branch in the network model is provided within the sensitivity factor tables. These are calculated using PSS/E load flow software and are used to determine the effect of increasing net demand at each node to...