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Publications library

We've got a wide range of publications offering energy insights and analysis. Download our reports and data to see the innovative ways we are transforming the future of Great Britain’s energy. 

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Data Portal
Supporting data on PN inaccuracies - 2025
This is supporting data for wind market participants involved in the PN inaccuracy project
Document
Data Portal
Supporting data on PN inaccuracies - 2024
This is supporting data for wind market participants involved in the PN inaccuracy project
Document
Electricity Ten Year Statement (ETYS)
ETYS24 Appendix D – Fault Levels Minimum
Fault level data at minimum demand, by grid supply point.
Document
Electricity Ten Year Statement (ETYS)
ETYS24 Appendix D – Fault levels Narrative
Explaining the terms and methodologies behind our fault level analysis.
Document
Electricity Ten Year Statement (ETYS)
ETYS24 Appendix F - Contracted Generation
Find out more about the generators on the network at 2024/25 winter peak.
Document
Electricity Ten Year Statement (ETYS)
ETYS24 Appendix G - Appendix G - FES Nodal Demand
View the FES demand by grid-supply point at 2024/25 winter peak.
Document
Electricity Ten Year Statement (ETYS)
ETYS24 Appendix H – Further information on inputs and methodologies
See how the FES generation, demand and interconnector data is applied to the network simulation models.
Document
Electricity Ten Year Statement (ETYS)
ETYS24 Appendix I – Transmission losses
Learn more about the drivers that may impact the total volume of future transmission losses on the NETS.
Document
Electricity Ten Year Statement (ETYS)
ETYS 2024 Publication
The Electricity Ten Year Statement 2024 main report, containing the NESO's view of transmission system capability and requirements.
Document
Electricity Ten Year Statement (ETYS)
ETYS 2024 Boundary Chart Data
A tabulated version of the data behind the ETYS 2024 boundary charts, containing the required transfers, unconstrained flows, and capability of the ETYS boundaries
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Publications library

We've got a wide range of publications offering energy insights and analysis.
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Beyond 2030

The Beyond 2030 report builds on the Holistic Network Design (HND) and makes a set of network recommendations throughout the 2030s.
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Future Energy Scenarios (FES)

Future Energy Scenarios (FES) 2024: NESO Pathways to Net Zero represent different, credible ways to decarbonise our energy system as we strive towards the 2050 target.
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Network Options Assessment (NOA)

The Network Options Assessment (NOA) provides our recommendation for which network reinforcement projects should receive investment, and when.
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Clean Power 2030

As the National Energy System Operator (NESO), part of our role is to provide impartial advice to HM Government and the regulator on what is required to securely accelerate the transition away from fossil fuels.
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Electricity Ten Year Statement (ETYS)

The ETYS is our view of future transmission requirements and capability of Great Britain’s National Electricity Transmission System.
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GB 36 Bus electricity transmission network model

The National Electricity Transmission System (NETS) of Great Britain was modelled with precision in DIgSILENT PowerFactory, using a 36-bus equivalent network.
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Markets Roadmap

We are committed to working together with stakeholders as we reform our markets to be fit for a net zero future. We share information on this transition at regular Markets Forums and through our annual Markets Roadmap.
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Summer Outlook

Our Summer Outlook reports are designed to inform the energy industry and support its preparations. They also outline Great Britain’s projected electricity needs for the summer ahead.
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Winter Outlook

The Winter Outlook report presents our view of the security of supply for the electricity systems for the winter ahead.
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Whole electricity system

The journey to creating an energy system fit for the future wouldn’t be possible without close collaboration with industry partners to help the transition.
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System Operability Framework (SOF)

The System Operability Framework (SOF) takes a holistic view of the changing energy landscape to assess the future operation of Britain's electricity networks.
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Regional Development Programmes (RDPs)

RDPs look across the whole electricity system to unlock more network capacity, reduce constraints, and create new revenue opportunities for market participants.