Issue 81
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Issue 81 is now closed.Summary
In the National Grid Electricity System Operator ( NGESO) Cost Benefit Analysis on P297, NGESO received feedback that there may be an opportunity to identify consumer benefits by exploring how the data items originally in P297 might be assessed to support the development of Run-up/Run-down rates and Last Time to Cancel Synchronisation (LTCS) publication on BMRS and these can fit in with the BSC and Grid Code.
Further information can be found in the Proposal Form.
Progression
The Issue Group agreed that, while additional Run Up / Run Down rates would provide some benefit to certain types of generators, it was not able to establish a sufficiently robust cost benefit for this change. Similarly, the Issue Group was not able to quantify the benefits of publishing LTCS and therefore could not justify the costs of making the change. The Issue Group recommended that no changes to the Grid Code or the BSC should be raised. At its meeting on 14 May 2020, the BSC Panel noted this recommendation and closed Issue 81.
Issue 81 was raised by National Grid ESO on 12 June 2019. The first Issue 81 was held on Monday 4 November 2019. The Workgroup noted that although the benefits of the changes proposed under Issue 81 are still unclear, in principle these changes could reduce imbalances and increase transparency. However, the Workgroup noted these changes should be prioritised in relation to other industry change projects, and the progression of these changes should not deter from, or reduce the benefits being delivered by other industry change initiatives. The second Issue 81 meeting was held on Tuesday 14 January 2020.
On the request of the workgroup, NGESO and Elexon conducted further analysis, to help support the Workgroup’s determination of whether there are any further consumer or market benefits to progressing elements of the solution previously developed under P297. Following the second meeting on the 14 January 2020, Elexon engaged industry to try to obtain additional examples of ramp rates on which to base quantitative analysis.
Elexon has conducted an analysis of the impacts of the current set of Run Up / Run Down Rates on imbalance charges. The analysis showed the total net value of imbalance charges paid by the industry during NGESO instructed start-ups is of the order of £50k or less per year, which is approximately less than 1% of imbalance charges.