Network Development Plan

Sharing data is key to the efficiency of the energy system as we decarbonise to Net Zero.

It enables customers and stakeholders to assess market opportunities and participate in flexibility markets as well as promote network companies and key stakeholders to work together to facilitate efficient whole system planning and operation.

As a DNO we already publish network planning and development documents including Long Term Development Statements (LTDS) and Distribution Future Energy Scenarios (DFES).

The LTDS and DFES provide information and forecasts of our existing network and the availability of capacity in the short and long term respectively.

The aim of the Network Development Plan is to bridge this gap providing a medium term outlook to our stakeholders. It provides details on available network capacity to accommodate future demand and generation growth, as well as our planned interventions which increase network capacity. 

Our Network Development Plan structure

Our NDP is structured as summarised below and aims to provide stakeholders with transparency on our planned network developments and the resulting forecast network capacity headroom.

• Executive Summary:
• Network Development Report – this provides detailed information on our intervention plan
• Network Capacity Headroom Report – demand and generation headroom at each substation to 2050 with planned interventions
• Methodology Statement

Our NDP 2024 Documents

Our Network Development Plan documents

NDP Summary Document

A summary document to introduce our NDP, summarise the contents, and set out our consultation questions.

Part 1: Development report

Contains detailed information on the interventions we plan that will increase capacity.

This includes non-load interventions which are not done to provide capacity but will increase capacity nonetheless (e.g. asset management interventions such as replacing an end-of-life transformer with a larger equivalent).

Part 2: Network capacity

The indicative demand and generation capacity available at each primary substation (down to and including the HV busbar).

Forecasts are produced for every year for the first 10 years, and then for every five years after that out to 2050. These capacity forecasts must take account of known planned interventions which will increase capacity (Part 1).

SP Distribution: Parts 1 and 2 report

• Link to Data Tables

SP Manweb: Parts 1 and 2 report

• Link to Data Tables
   

Part 3: Methodology statement

A document explaining how we have produced Parts 1 and 2. As the methodology is the same, this is a combined document for both our SP Distribution and SP Manweb licence areas. This includes a summary of the feedback we received.

Methodology Statement: Part 3

As the methodology is the same, this is a combined document for both our SP Distribution and SP Manweb licence areas.

Our DNOA Pages

• Monktonhall and Tranent primary reinforcement
• St Andrews primary reinforcement
• Kaimes GSP reinforcement
• New Moffat GSP
• Redhouse GSP reinforcement
• Connah’s Quay 132kV reinforcement
• Carrington/Fiddler’s Ferry 132kV reinforcement
• Lister Drive 132kV reinforcement
• Maentwrog – Porthmadog 33kV reinforcement
• Colwyn Bay-Dolgarrog 33kV reinforcement
• Newtown-Morda 33kV reinforcement
• Formby-Southport 33kV reinforcement
• Radway Green 33kV reinforcement
• Brymbo/Hawarden/Holywell 33kV reinforcement
• Aberdyfi Harlech reinforcement
• Acer Ave Primary reinforcement
• Ayton Primary reinforcement
• Bootle Canal Quarter reinforcement
• East Kilbride GSP fault level mitigation
• Govan St Andrews Cross voltage upgrade
• Hamilton Primary reinforcement
• Kilmarnock Town GSP fault level mitigation
• Kirknewton Primary reinforcement
• Legacy 132kV reinforcement
• Levenbank Primary reinforcement
• Leven Primary fault level mitigation
• Middlewich Primary reinforcement
• Newarthill GSP fault level mitigation
• New Currie GSP
• New Redshaw GSP
• Portobello Primary reinforcement
• Port Dundas GSP fault level mitigation
• Prescot Grid fault level mitigation
• Sandbach Primary reinforcement
• Stonehouse Primary reinforcement
• Stranraer Primary reinforcement
• Strathaven GSP fault level mitigation
• Weston Basford Sidings reinforcement
• West George St GSP fault level mitigation
• West George St Primary fault level mitigation
• Whitehouse GSP fault level mitigation
• Whitlawburn Primary reinforcement
• Woodside Grid fault level mitigation
• Yair Bridge reinforcement

You can access the data via the SP Energy Networks Open Data Portal

Accessing the data via our Open Data Portal allows the user to download the data in various file formats, as well as extract the data via an application programming interface (API). The portal gives descriptions of all the data and enables users to effortlessly find other, related datasets that may be of interest.

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Your feedback

As our stakeholders’ views and plans evolve, it is vital that we keep in step with these requirements to ensure that we continue to plan and develop our networks with the most up-to-date information.

The purpose of the Network Development Plan is to share our network planning and development information, and therefore these documents must meet our stakeholders’ needs.

This is why your views are so important to us.

You can send us your feedback at any time via email to systemdesignteam@spenergynetworks.co.uk or by completing our online survey. Any feedback received will be taken into consideration at the earliest opportunity.

Other useful documents

GIS shape files (to open these files you will need appropriate GIS software):

• SPD Primary supplied areas

• SPM Primary supplied areas

• SPM Grid Group supplied areas