Elexon’s response to the CMP398 Workgroup Consultation

Elexon have responded to the Workgroup Consultation for CUSC Modification CMP398 ‘GC0156 Cost Recovery mechanism for CUSC Parties.

In our response we comment on the potential interactions between the CMP398 solution and the BSC’s existing process for Black Start compensation claims. We also highlight our recent related response to Grid Code Modification GC0156 ‘Facilitating the Implementation of the Electricity System Restoration Standard’ and, in particular, our comments on the GC0156 implementation approach.

Our response

Our response focuses on identifying any BSC impacts or interactions from CMP398. We note that the CMP398 Workgroup’s consultation does not at this stage include draft CUSC legal text. From the consultation materials provided, we have not identified any direct impact from CMP398 on the BSC’s own compensation arrangements for a Black Start event (Total or Partial Shutdown of the system).

We note that the intention of CMP398 is to provide a process for CUSC Parties to recover the CAPEX and OPEX costs that they incur in ensuring that their sites have the capability to deliver the new GC0156 ‘Facilitating the Implementation of the Electricity System Restoration Standard’ resilience requirements.

These costs will be incurred before, and regardless of whether, any actual Total or Partial Shutdown occurs. We agree that this is different in principle to the BSC’s process for Black Start compensation claims, which enables BSC Parties to recover the Avoidable Costs that they incur during a Total or Partial Shutdown event as a direct result of complying with a Black Start instruction from NGESO.

Although the two Codes would therefore cover different types of costs, we agree with the Proposer that (to avoid any possible double-counting) it would be a sensible precaution for the CMP398 legal text to make it a condition of any upheld CUSC claim that the successful claimant cannot later submit a BSC Black Start claim for the same costs.

The BSC’s definition of Black Start Avoidable Costs already excludes insurance, financing and overhead costs. As part of any BSC Modification Proposal needed to deliver the intention of GC0156, a BSC Workgroup could consider whether to adopt a ‘belt and braces’ approach of placing a reciprocal restriction on any BSC claimant from being able to claim for costs recovered under another Industry Code.

We note that parts of the CMP398 solution are based on the BSC’s claims committee process for Fuel Security Code claims. Under this existing BSC process, generators can recover Exceptional Costs that they incur in anticipation of, or during, a Fuel Security Period as a direct result of complying with a Secretary of State direction.


  • believe that it is for the CMP398 Workgroup to determine the extent to which these BSC provisions are appropriate/applicable for the relevant CAPEX and OPEX costs under consideration for CUSC recovery.
  • Highlight that BSC Procedure (BSCP) 2013 contains more detailed information on the BSC claims processes for both Avoidable Costs and Exceptional Costs (including claims forms, guidance on the types of costs that can be claimed, and draft Claims Committee terms of reference), which may be helpful to the CMP398 Workgroup in making this decision.
  • Note that the CMP398 consultation refers to CUSC claims committee members being remunerated in line with the BSC process, but are unsure what this means in practice for the CUSC (as remuneration for BSC claims committee members forms part of the BSC Costs recovered by Elexon from BSC Parties).

We understand that the intention is to align implementation of CMP398 with GC0156. We would therefore also like to highlight our recent response to the GC0156 Workgroup Consultation4. Our response to GC0156:

  • Gives our view of the likely changes needed to the BSC’s Black Start compensation rules to deliver the intention of GC0156
  • Sets out our estimated timescales for progressing these changes (noting that they have yet to be raised as a BSC Modification Proposal)
  • Includes our related comments on the GC0156 implementation approach and legal text

Formal response document

Contact Information

Communications Team
[email protected]


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