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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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Connection and Use of System Code (CUSC)
Updated CUSC Sections, Schedules and Exhibits
28 March 2025
Updated CUSC Sections, Schedules and Exhibits for review
Document
Connection and Use of System Code (CUSC)
CMP440 Workgroup 4 Slides 21 March 2025
21 March 2025
Presentation slides for CMP440 Workgroup 4
Document
Connection and Use of System Code (CUSC)
CMP440 Workgroup 4 Agenda 21 March 2025
21 March 2025
Agenda for CMP440 Workgroup 4
Document
Operational Transparency Forum (OTF)
Daily Report
21 March 2025
Daily NESO Report relating to the status of the National Electricity Transmission System (NETS) and factors affecting the NETS
Document
Operational Transparency Forum (OTF)
Daily Report
21 March 2025
Daily NESO Report relating to the status of the National Electricity Transmission System (NETS) and factors affecting the NETS
Document
Connections Reform
Connections Methodologies – Overview of changes (March 2025)
21 March 2025
This document explains the amendments NESO have proposed to the three connections methodologies in the context of Ofgem’s consultation and further engagement with stakeholders.
Document
Connections Reform
Connections Network Design Methodology (March 2025)
21 March 2025
The Connections Network Design Methodology (CNDM) describes how relevant generation and demand connections will be assessed and strategically designed in alignment
Document
Connections Reform
Project Designation Methodology (March 2025)
21 March 2025
The Project Designation Methodology explains how NESO will designate projects, under the reformed electricity transmission connection process
Document
Connections Reform
Gate 2 Criteria Methodology (March 2025)
21 March 2025
The Gate 2 Criteria Methodology sets out the Gate 2 Criteria for both new applications and existing agreements and the evidence requirements and assessment of this criteria.
Document
European Network Codes (ENC)
GB Pricing Methodology Consultation and Annexes
21 March 2025
GB Pricing Methodology Consultation and Annexes for review
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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.