Supporting documents | RIIO-T3

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Learn more about our plan for 2026 - 2031

A regional view of our plan

Our Regional Reports

Infrastructure fit for a low-cost transition to net zero

In this section, we outline the commitments and investments that support the first of Ofgem’s four Consumer Outcomes: infrastructure fit for a low-cost transition to net zero. This includes how we will increase the capacity of the system, accelerate connections for our customers and protect and improve the environment.

Secure and Resilient Supplies

In this section, we outline the commitments and investments that support Ofgem’s second consumer outcome: Secure and resilient supplies. This includes how we will maintain our assets during a growth phase, transform our operations to manage a net zero power system and ensure the resilience of our network, supply chain and workforce.

High Quality of Service from regulated firms

In this section, we outline the commitments and investments to support Ofgem’s third Consumer Outcome: high quality of service from regulated firms. This includes how we will improve the experience for our customers connecting to our network, make a positive contribution to our communities and consumers, mitigate the visual impacts of our network and invest in and deploy innovation.

Long term value for money

In this section we outline our contribution to delivering Ofgem’s fourth Consumer Outcome: long-term value for money. This includes outlining how we will ensure our costs are efficient, our contribution to supporting economic growth, our digitalisation and data strategy, our information technology and telecommunications investments and the regulatory framework to support long term value for money.

Cost and financeability

In this section we set out the overall cost of our plan and the financial framework for RIIO-T3. We also explain our approach to ensuring we are able to finance our business, our evidence for the regulatory framework and rate of return necessary to attract investment.

Supporting documents

Annexes and High Level Summaries

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Annexes

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A01 NGET Environmental Action Plan

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A02 NGET Climate Resilience Strategy

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A03 NGET Workforce and Supply Chain Resilience Strategy

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A05 NGET Digitalisation Strategy and Action Plan

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A06 NGET Independent Stakeholder Group Statement

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A07 NGET Stakeholder Engagement and Decision Log

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A08 NGET ET Load Strategy

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A09 NGET Innovation Annex

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A10 NGET Network Asset Management Strategy

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A11 NGET Assurance Statement

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A12 NGET Finance Annex

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A13 NGET IT and Telecoms Strategy

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NGET T3 BP Publication Redaction Statement

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Ofgem Strategic Summary

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NGET Business Plan 2024 Appendix 2 - Yonder Consulting - Stakeholder priority outcomes

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NGET Business Plan 2024 Appendix 3 - MINTEL Consulting - Consumer environmentalism

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NGET Business Plan 2024 Appendix 4 - Sustainability First - Rapid Review

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NGET Business Plan 2024 Appendix 5 - Yonder Consulting - Consumer Affordability

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Frontier Economics, Cost of Equity for T3

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Oxera, T3 cost of equity- CAPM parameters

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Updated cost of equity cross check evidence

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Oxera, Review of the regulatory regimes for European comparators to strengthen the use of the European beta data

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Oxera, RIIO-3 risks and investability topics

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Oxera, Evaluation of the ARP-DRP framework

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Benefits of a Baa1 BBB+ debt rating over Baa2 BBB

High level summaries

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NGET Atypical EJP T3 SF6 - Summary

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NGET Atypical EJP Commercial Fleet Replacement - Summary

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NGET Atypical EJP Energy Efficiency - Summary

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NGET Atypical EJP UIOLI Provision for Emerging Low Carbon Opportunities - Summary

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NGET Atypical EJP Community Benefit Framework - Summary

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NGET Major Project EJP NEWX-WIMB HUS-NEWX HURS LITT Decommissioning - Summary

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NGET Major Project EJP Gretna Harker Moffat OHL - Summary

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NGET Major Project EJP Feckenham - Ironbridge OHL - Summary

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NGET Major Project EJP East Claydon Enderby Patford OHL - Summary

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NGET Major Project Barking - West Ham OHL - Summary

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NGET Atypical EJP Network Operability - Summary

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NGET Major Project EJP Feckenham Hams Hall Drakelow OHL - Summary

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NGET Atypical EJP Reactive Compensation - Summary

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NGET Major Project BPRE (BRFO-PELH-BRAI-RAYL) OHL- Summary

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NGET Major Project SCRE (COTT4 - STAY4) and WRRE (WBUR4 - RATS4) OHL - Summary

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NGET Atypical EJP Enhanced Ratings Strategy - Summary

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NGET NN Atypical EJP Customer and Stakeholder Experience Management - Summary

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NGET NN Atypical EJP Construction Optimisation - Summary

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NGET NN Atypical EJP Digital Twin and Power Systems - Summary

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NGET NN Atypical EJP Enterprise Delivery Management - Summary

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NGET NN Atypical EJP Operational Management - Summary

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NGET NN Atypical EJP Enabling Data - Summary

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NGET NN Atypical EJP Business Fundamentals Safety and Compliance Management - Summary

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NGET NN Atypical EJP ERP Systems - Summary

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NGET NN Atypical EJP HR Joiners to Leavers - Summary

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NGET NN Atypical EJP Procurement Source to Pay - Summary

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NGET NN Atypical EJP Strategy Regulation and Corporate Affairs - Summary

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NGET NN Atypical EJP General Counsel - Summary

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NGET NN Atypical EJP DPIT Delivery - Summary

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NGET NN Atypical EJP Digital Workplace - Summary

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NGET NN Atypical EJP DPIT Infrastructure - Summary

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NGET NN Atypical EJP DPIT Platform - Summary

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NGET NN Atypical EJP EV Chargers - Summary

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NGET NN Atypical EJP Development Clause Claims - Summary

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NGET NN Atypical EJP Business Fundamentals Common Platforms - Summary

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NGET NN Atypical EJP Fixed Wire Testing - Summary

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NGET NN Atypical EJP Early Land Purchase - Summary

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NGET NN Atypical EJP Conversion of Wayleaves to Easements - Summary

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NGET NN Atypical EJP Didcot Stores Asset Health - Summary

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NGET NN Atypical EJP Didcot Stores New Build - Summary

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NGET NN Atypical EJP Eakring Training Centre - Summary

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NGET NN Atypical EJP Operational Estate - Summary