WS1 - T D Process

Workstream 1 Products


2018 Products 

If you would like to learn more about the products planned for 2018, please refer to the Phase 2 Project Initiation Document. Alternatively, should you wish to be notified when new products are launched, please join the Open Networks mailing list by clicking here. 

Product 1: Invesment Processes

Workstream 1, Product 1 seeks to enable a whole system approach utilising a range of investment and operability options across Tranmission and Distribution.

Product 1: RDP Learnings

This report documents the key learnings from these programmes most relevant to the investment planning process and which can be explored further through the case studies being delivered through Work Stream 1 Product 1 of the ENA Open Networks project.

Product 2: DER Services Procurement 

As part of the Open Networks Project’s Phase 2 plan for Work Stream 1 (T – D Processes), Product 2 (DER Services Procurement) seeks to develop the commercial principles and methodology to enable efficient access to services from Distributed Energy Resources (DER) to manage both transmission and distribution networks. 

Product 2: DER Services Procurement - Review of Key Learnings 

Supporting Material

This report constitutes the first deliverable (2.1) of Product 2. It sets out relevant work previously undertaken; both within the ENA and externally, the key learnings of which will be used to inform the development of processes for the efficient procurement and use of DER services.

Product 3: Industry Framework Interactions

Product 3: Schedule of GB Code Interations

Product 4: Reliability Standards & Emergency Requirements

This product looks to Ensure that emerging Whole System investment & operational processes maintain security of supply across T&D and cover requirements under emergency conditions.

Product 4.1: Reliability Standards & Emergency Requirements

This document reviews the current versions of the distribution and transmission security planning standards and draws out the common elements between how these standards are approached. It also seeks to ensure any barriers to meeting whole system planning requirements are identified and outlines further development required to best facilitate planning across the transmission/distribution boundary. 

Product 5: Whole System FES

The Whole System Future Energy Scenarios (FES) product of the Open Networks Project’s Phase 2 plan for Workstream 1 (T–D Processes), seeks to establish a framework to facilitate the production of distribution level FES which are aligned to the GB FES produced by the GB System Operator (SO) in order to support whole system planning activities.

Product 5.1: Review of Current Forecasting Approaches

This report details the evidence gathered from the DNOs on the current forecasting approaches and draws some similarities and differences between the network companies’ approach to forecasting. The outcomes from this exercise will inform further work under this Product 5 (Whole System FES).

Product 8: System Wide Resource Register

This product is reviewing the feasibility of putting in place a central resource register for GB generation, storage and flexible demand.

Product 8.1: System Wide Resource Register - Review of Information Currently Available

This document aims to set out the different types of information that is currently available and published by the GBSO and DNOs for customers. Customers will often refer to this information in advance of seeking a connection to understand better the connection opportunities that exist across the network areas.
Product 8.2System Wide Resource Register - Identification of Potential Formats and Requirements
This document's objective is to describe the proposed form of the System Wide Resource Register that DNOs, IDNOs, TOs and the GBSO may offer to customers and other interested stakeholders. Customers have expressed the need for improved availability of information to support business planning & investment decisions along with more efficient procurement of services.

Product 11: Facilitating Connections
This product's obective is to develop a Flexible Connections Guide and action plan for flexible resources in connection queues for medium to long term with the aim to publish it for stakeholders.
Product 11.1: Treatment of Flexibility - Consultation Response Themes
This document is our response to the feedback received from the Call for Evidence on Treatment of Flexibility in the connections queue. These slides summarise the key themes form the responses that we received and outline out next steps. For more information, please see out Public Consultations page.

Product 12: TSO/DSO & DER Data 

In light of DSOTSO changes (Statement of works), this product's objective is to consider revisions to Week 24/42 processes and update minimum/ detailed data requirements to be provided from DER customers when they apply for a connection and after they agree a connection from the DNO.

Product 12.1: Review of Key Learnings

Product 12.1 is a sub deliverable under this product that allows for review of previous key projects that could lead to changes in data exchanges or data requirements between TSO/DSO and DER’s (e.g. RDP’s and SOW).
Product 12.3: Questionnaire Feedback Summary

Product 12.3 is aimed at a review of ongoing enforcement of existing requirements for data exchange primarily between DERs and DNOs.

Product 13: Operational Data & Control Architectures

As part of the Open Networks Project’s Phase 2 plan for Work Stream 1 (T – D Processes), Product 13 seeks to capture benefits/drawbacks of each market model (developed as part of WS1 P4 2017) in terms of accuracy, practicality, feasibility (including limits) and efficiency.

Product 13.2: Review of Key Learnings

Product 13 will progress the delivery of trials for Model 3 (NETSO) and Model 4 (DSO) as part of existing RDP projects in WPD and UK Power Networks respectively. In addition to this, P13 will progress work on definition of Model 5: Joint Procurement and/or Dispatch. Product 13.1 captures the key learnings from industry to date.


2017 Products

Product 1Key Learnings from trial projects

This report is part of the ENA Open Networks Workstream 1 – Product 1: Mapping current SO, TO and DNO processes. It seeks to capture important learnings from key projects developed by DNOs and the SO/TO.

Product 1: Mapping Current SO, TO and DNO Processes 

This report is the output of Product 1 from the ENA Open Networks Project working group / Workstream 1. It captures processes and data that underlie the DNO and SO/TO investment and operational planning as well as the interface between them. Process maps have been developed to improve the understanding of the given information.

Product 2: Gaps and Issues Report - Investment and Operational Planning

This report identifies and analyses gaps, issues and barriers in the current investment and operational planning processes and presents an action plan to address them.

Product 3: Investment Planning Model (Short Term) paper

This paper proposes an approach to whole system investment planning in the short term.

Product 5: Potential Whole System Operational Issues 

As the electricity system changes, moving to more active operation across all voltage levels, then some existing resilience functions may be affected. This report identifies at a high level some areas of whole system operability that need to be reassessed in light of future electricity system operation.

Product 5: Coordination in an Operational Timeframe

This report is part of the ENA Open Networks Workstream 1 – Product 5: Co-ordination in an
operational timeframe. This product aimed to identify key principles of operability on a TSODSO
basis irrespective of market model and to define the co-ordination activities required
across the T-D boundary to deliver whole system outcomes.

Product 5: Curtailment Assessment Process

This document describes trials of curtailment assessments embedded services performed with two DNOs, UKPN and WPD, with the aim of identifying a process for analysing the impact of ANM managed constraints on embedded SO services.

Product 7: Planning limits data template 

The Data Template sets out the information required by the SO/TOs from each DNO in order to undertake the necessary system studies which will determine planning limits at GSPs. A subset of this data will also form the basis of the data exchange between the DNOs, SO and TOs when managing DG contracted to connect under the new proposed process, the impact on the transmission system and the agreed planning limits.

Product 7: Statement of Works Customer Journey Maps

The Customer Journey maps set out the current SoW process along with the data exchange and process flows, together with the new proposed process which will establish planning limits at each DNO GSP, new contractual arrangements between the DNOs and SO and the resulting customer benefits. It should be noted however that the customer journey map reflects the process where a planning limit has been established. Where further studies are required in order to determine a new panning limit, this will require the DNO to submit a Modification Application to the GBSO.

Product 7: GSP Planning Limit Roll Out Programme 

The GSP Planning Limits Roll Out Programme sets out the plan which has been developed and agreed by all DNOs, TOs and the GBSO to establish Planning Limits across the Transmission/Distribution boundary, and ultimately deliver the transition away from Statement of Works when assessing the impact of Distributed Energy Resources on the transmission system. The programme will provide visibility to all interested stakeholders as to where current trials are in place and timescales for wider roll out across GB. Any questions on the programme should be directed to the particular DNO for the network area in question. The GBSO is currently developing their proposals for the associated CUSC (Connection & Use of System Code) Modification with a view of initial presentation at the January TCMF (Transmission Charging Methodologies Forum) and CUSC Panel Meetings.


Schedule of GB Code Interactions