transitional Regional Energy Strategic Plan (tRESP)
NESO has launched its first-of-a-kind transitional Regional Energy Strategic Plan (also known as tRESP) to inform the network investments by electricity distribution network operators (DNOs) between 2028-33. This plan – launched on 30 January 2026 - forms a key part of NESO’s new responsibilities as strategic energy planner for the whole of Great Britain.
On this page you can access:
- the final tRESP report
- Executive Summary (also in Welsh)
- tRESP Explainer
- tRESP Consultation feedback report
- tRESP FAQs
- tRESP launch webinar recording and slides (webinar held on 30 January 2026).
What is tRESP?
The transitional Regional Energy Strategic Plan (tRESP) is the first publication in the journey towards transforming and improving energy infrastructure at a local level, developing bespoke plans for Scotland, England and Wales.
It is the first step to ensuring that everyone has access to the secure, affordable and sustainable energy they need, better aligning future energy needs to local ambitions.
The plan will inform future network investments by electricity distribution network operators as they prepare business plans for the next price control period between 2028-2033. The plan identifies areas where proactive network investments could be delivered to enable the delivery of local projects. NESO will build on this transitional plan for the delivery of its new Full RESP role, starting in late 2026.
How was tRESP produced?
The views of customers and stakeholders have been key to the development of this transitional plan. Over 2,800 local stakeholders have joined three rounds of RESP Forums, since March 2025, with nearly 2,500 submissions provided by stakeholders to help NESO understand the strategically important energy needs in each nation and region of Great Britain.
We also asked our customers and stakeholders to send us further information on their energy needs, between May and October 2025, and ran a six-week tRESP consultation between September and November 2025. You can read more about how we have used the tRESP consultation responses in our Consultation Feedback Response report below.
Throughout the development of the plan, NESO has engaged with Ofgem and the six DNOs to ensure that the final version can be practically used as part of DNO business planning.
Why has NESO produced tRESP?
Energy needs are changing rapidly, and we see growing needs across Great Britain.
We expect to see significant housing growth across the country, and the job creators of the future - whether industries or data centres - all mean increased demand for clean and secure energy. Homes and businesses are making the shift to electricity whether to heat their homes or to get around with the rise of electric vehicles.
Increasing numbers of local renewable energy and storage projects are powering local communities. High users of energy in industry and transport are decarbonising, ensuring they can thrive in a global low carbon economy.
The energy regulator Ofgem had asked NESO to produce tRESP before the more holistic Full RESPs. tRESP will help to make the transition from the way that energy distribution networks are currently planned to the new Full RESP approach. Beginning in late 2026, Full RESP will produce 11 holistic, whole-energy, Regional Energy Strategic Plans (RESPs) for Scotland, Wales and England.
The benefits of tRESP include:
- helping to ensure local areas get the electricity distribution networks they need during 2028-33
- assisting the DNOs with the development of their business plans for 2028-33
- supporting energy regulator Ofgem with the setting of DNO business plans for 2028-33
- and giving local customers and stakeholders the opportunity to begin working with NESO, ahead of the start of Full RESP from late 2026.
Final tRESP Publication, Executive Summary and Explainer documents
tRESP Executive Summary
The tRESP Executive Summary provides a brief summary of tRESP and its components. We have also provided the Executive Summary in Welsh.
tRESP Explainer
For more information on the tRESP development process, please read the tRESP Explainer. This document provides an overview of the work NESO has completed for tRESP. It outlines its purpose and scope, as well as how we’ve engaged our customers and stakeholders in the process.
Final tRESP Publication – released 30 January 2026:
Below you will find the final tRESP documents, published on 30 January 2026. tRESP is made up of four components:
- Nations and Regions Contexts (NRC)
- Pathways
- Consistent Planning Assumptions (CPA)
- Strategic Energy Needs (SEN) (formerly Strategic Investment Needs)
Nations and Regions Contexts (NRC)
Our Nations and Regions Contexts digital platform
Nations and Regions Contexts provides an initial view of conditions and priorities for each RESP nation and region.
Our Methodology and Detailed Design
The tRESP Nations and Regions Contexts Methodology and Detailed Design covers our approach and the data used to develop the Nations and Regions Contexts.
tRESP Pathways
Our Pathways digital platform
In this section, we have provided visualisations for each RESP nation and region, derived from tRESP Pathways databooks, along with the corresponding Nations and Regions Contexts.
Our Demand Pathways Databooks and supporting files
Demand Pathways for each tRESP Grid Supply Point (GSP) feeding area (or by GSP group in Scotland), per year, from 2025 to 2050. They also cover each RESP nation and region, as well as an indicative basis per local authority area. Supporting files include the list of building blocks and the GeoPackage (gpkg) definition of tRESP GSP areas.
Our Generation Pathways Databooks
Generation Pathways for each tRESP Grid Supply Point (GSP) feeding area (or by GSP group in Scotland), per year, from 2025 to 2050. They also cover each RESP nation and region, as well as an indicative basis per local authority area.
Our Methodology and Detailed Design
The tRESP Pathways Methodology and Detailed Design covers our approach to the development of the Pathways.
tRESP Consistent Planning Assumptions (CPA)
Our Consistent Planning Assumptions Value Workbook
The CPA Value Workbook contains default values/ranges for all CPAs and outlines the complete modelling process for deriving demand from electric vehicles (EVs) and residential heat pumps. It also contains a complete example of applying the EV and heat pump CPAs.
Our Methodology and Detailed Design
The tRESP CPA Methodology and Detailed Design covers our approach to the development of CPAs.
tRESP CPAs Methodology and Detailed Design Appendix 4 – User Guidance for Specific CPA Values
This is an appendix to the tRESP CPAs Methodology and Detailed Design. It sets out the approach for DNOs to apply specific tRESP CPAs when developing their demand forecasts, which will help to inform their network investment plans.
tRESP Strategic Energy Need (SEN)
Our Strategic Energy Needs digital platform
This section provides a spatial view of where SEN may be emerging. The accompanying narratives summarise common hotspot types, and early trends across each nation and region in GB.
Our Methodology and Detailed Design
The tRESP SEN Methodology and Detailed Design covers our approach to the development of SEN.
Additional tRESP documents:
tRESP Consultation Feedback Response report
This report summarises the responses we received from customers and stakeholders from across Great Britain. Each section outlines the main themes raised in relation to the four components of tRESP and the actions we’ve taken as a result.
tRESP Frequently Asked Questions (FAQs)
The FAQs document provides short answers to the main questions that we expect our customers and stakeholders will ask about tRESP. This document will be updated regularly, so please continue to revisit this page. All information is correct as of the publication date.
If you have any questions that are not featured in this FAQ document, please contact the RESP team at [email protected].
Visit NESO news and read our tRESP launch news article. Also visit our RESP website pages for further information about regional energy strategic planning.