System Planning

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).

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Distribution Transformer Phasing
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Secondary (distribution) transformer phasing data, inferred from Transformer Reference Type and/or GIS line data, inclusive of Local Authority. We have developed the...

Last updated: 17/10/2025 - 09:36
Distribution Future Energy Scenarios (DFES)
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The Distribution Future Energy Scenarios (DFES) outline the range of credible futures for the growth of the distribution network, and represents the first step in the National...

Last updated: 08/07/2025 - 16:37
Distribution Network Options Assessment (DNOA)
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The Distribution Network Options Assessment (DNOA) represents the optioneering phase of the investment planning process, which is the third and final step. More details on its...

Last updated: 29/08/2024 - 13:31

Distribution Transformer Phasing

Distribution Future Energy Scenarios (DFES)

Distribution Network Options Assessment (DNOA)