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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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Balancing Settlement Code (BSC)
ABSVD Methodology Statement v19 effective from 01 April 2025 Tracked Changes for Annual
These are the consultation documents and tracked change statements for proposed changes to the C9 statements.
Document
Balancing Settlement Code (BSC)
Balancing Principles Statement v25 effective 01 April 2025 Tracked Changes for Annual
These are the consultation documents and tracked change statements for proposed changes to the C9 statements.
Document
Balancing Settlement Code (BSC)
BSAD Methodology Statement v25 effective 01 April 2025 Tracked Changes for Annual
These are the consultation documents and tracked change statements for proposed changes to the C9 statements.
Document
Balancing Settlement Code (BSC)
Procurement Guidelines Statement v27 effective from 01 April 2025 Tracked Changes for Annual
These are the consultation documents and tracked change statements for proposed changes to the C9 statements.
Document
Balancing Settlement Code (BSC)
SMAF Methodology Statement v18 effective 01 April 2025 Tracked Changes for Annual
These are the consultation documents and tracked change statements for proposed changes to the C9 statements.
Document
Balancing Settlement Code (BSC)
Annual Balancing Services Spend Report April 2023 - March 2024
The purpose of this report is to document the total spend made by the Electricity System Operator (ESO) on Balancing Services.
Document
Balancing Settlement Code (BSC)
ABSVD Methodology Statement V18 effective 04 October 2024
This is the tracked changes ABSVD C16 statement to accompany the ad hoc review
Document
Balancing Settlement Code (BSC)
Procurement Guidelines Statement V26 effective 04 October 2024
Procurement Guidelines Statement V26 effective 04 October 2024
Document
Balancing Settlement Code (BSC)
Balancing Principles Statement v24 effective 04 October 2024
Balancing Principles Statement v24 effective 04 October 2024

Document
Balancing Settlement Code (BSC)
Annex A C16 Consultation Proforma
This document is the Annex A Proforma to enable industry to respond to the additional consultation for C16
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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.