IN Brief:
- National Grid Electricity Distribution has published its latest Network Development Plan, covering the next five to ten years of distribution-network development.
- The plan identifies network constraints, future headroom, and intervention options including flexibility, conventional reinforcement, and operational mitigation.
- The publication forms part of a wider shift towards more transparent, data-led distribution planning as electrification increases local network demand.
National Grid Electricity Distribution has published its latest Network Development Plan, setting out how its distribution network may need to develop over the next decade as demand growth, distributed generation, and electrification reshape local electricity systems.
The Network Development Plan is part of the company’s distribution system operator planning process and was published on 1 May 2026. It provides a ten-year view of network development requirements, with supporting material available through National Grid’s Network Opportunity and Development Map. The plan is produced under the Electricity Distribution Licence and is required every two years.
The document suite identifies where the distribution network may require intervention, assesses the future suitability of primary distribution networks, and provides planning information for Ofgem, local authorities, developers, and wider stakeholders. Potential solutions include flexibility services, conventional reinforcement, operational mitigation, or a combination of approaches depending on the location, forecast demand, and type of constraint.
The plan includes an introduction and methodology report, alongside network headroom material showing indicative capacity for additional demand and generation at substations across scenarios and years. That headroom information is increasingly used by organisations planning electric vehicle charging, heat pumps, commercial electrification, battery storage, distributed generation, and industrial load growth.
The planning process follows a consultation webinar held in March 2026, during which stakeholders were asked for feedback on the format and analysis methodology used to create the Network Development Plans. National Grid has also provided dedicated contact routes for local authorities and other stakeholders seeking to engage with the plan or discuss future local electricity requirements.
Distribution-network planning now has to account for demand patterns that are harder to predict than traditional load growth. Historic forecasting was shaped largely by population, housing, industrial load, and general economic activity. New demand can arrive through depot charging, rapid charging hubs, heat electrification, embedded generation, commercial batteries, data centres, and new industrial processes, often in concentrated locations that place pressure on specific feeders, transformers, or substations.
The publication also sits alongside wider changes in how Britain manages local network capacity. IN Power recently covered Energy Networks Association’s work on a common flexibility dispatch standard, which is designed to support interoperable flexibility services across distribution networks. More consistent dispatch processes can make local flexibility easier to procure, operate, and verify across different network areas.
At transmission level, network owners are also making greater use of operational data to increase usable capacity. National Grid’s recent expansion of dynamic line rating technology across 585km of transmission routes shows the same direction of travel: digital systems, asset data, and real-time operating conditions are being used to improve network utilisation while larger reinforcements progress.
The distribution challenge is different in scale and topology, but the principle is similar. Network operators need more granular data, clearer forward plans, and better coordination between reinforcement, flexibility, and connection management. Local constraints can affect commercial developments, EV charging schemes, renewable connections, and storage projects long before national transmission bottlenecks are reached.
The Network Development Plan gives stakeholders a clearer view of where demand and generation can be accommodated, where constraints are likely to emerge, and which intervention options may be considered. As electrification turns from forecast demand into physical load, distribution planning is becoming one of the main delivery mechanisms for the power system.
National Grid’s Network Development Plan documents are available through its Network Development Plan page.