13 Capacity Market Rule Change Proposals 2026
Summary
Ofgem has launched a statutory consultation on 13 Capacity Market rule change proposals covering technical expert definitions, metering processes, connection capacity reviews, reporting provisions, and project spend thresholds. The proposals affect electricity generators and Capacity Market participants. Stakeholder responses are requested by 24 May 2026.
What changed
Ofgem is consulting on 13 Capacity Market rule change proposals covering updates to technical expert definitions and report templates, termination reason clarifications, load following capacity obligation calculations, metering test process alignment, metering assessment deadlines, connection capacity reviews, reporting and monitoring simplifications, asset metering provisions, exhibit reviews, conditional prequalification for new connection dates, total project spend changes, temporary FCM grace periods, and meter operator agent utilisation. These proposals would modify the Capacity Market Rules 2014 governing the UK scheme that ensures adequate electricity generating capacity.
Capacity Market participants, including electricity generators and demand side response providers, should review each proposal to assess impacts on their market participation obligations, metering arrangements, connection agreements, and financial reporting requirements. The consultation presents Ofgem's minded-to positions on each change, with stakeholder feedback sought to inform final rule determinations.
What to do next
- Review the 13 Capacity Market rule change proposals (CP382, CP384-CP390, CP392-CP394, CP396-CP398) for operational impacts
- Submit written feedback to EMR_CMRules@ofgem.gov.uk by 24 May 2026
- Assess internal compliance and reporting process changes required by proposed metering, connection capacity, and project spend modifications
Archived snapshot
Apr 10, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Capacity Market Rules: change proposals 2026
Publication type: Consultation Publication date:
10 April 2026
Closing date: 24 May 2026 Status: Open Topic: Electricity generation Subtopic: Wholesale markets Get emails about this page Print this page
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Consultation description
The Capacity Market is a government scheme to make sure the UK has enough electricity generating capacity to meet demand, especially during periods of high pressure on the grid.
It is governed primarily by the Energy Act 2013, alongside the Electricity Capacity Regulations 2014 and Capacity Market Rules 2014 (updated multiple times since, most recently in 2025).
Our statutory consultation is on the following 13 Capacity Market rule change proposals:
- CP382 – Independent Technical Expert Definition Updates & Report Templates
- CP384 – Rule 6.10.1 Termination Reasons (g) & (ga)
- CP385 – Update to Load following Capacity Obligation calculation inputs
- CP386 – Alignment of Metering Test Processes, DSR Delivery Periods, and Terminology
- CP387 – Metering Assessment Deadlines
- CP389 – Connection Capacity Review
- CP390 – Simplifying Reporting & Monitoring Provisions
- CP392 – Amendments to enable Asset Metering and ensure Delivery Assurance
- CP393 – Full Review of Exhibits
- CP394 – 2026 Conditional Prequalification for assets that have applied for a new or modified connection date
- CP396 – Total Project Spend review, changes beyond DESNZ ‘housekeeping’
- CP397 – Temporary FCM Grace Period
- CP398 – Enabling Capacity Providers to utilise their own Meter Operator Agent For each change proposal, we explain the policy background, giving an overview of the proposed solution and its implications, summarise the CMAG discussion, and provide our minded-to position.
We are seeking feedback from stakeholders on the proposed rule changes. Each proposal section ends with questions for stakeholders who wish to contribute their views.
Who should respond
We welcome views from people with an interest in the Capacity Market, particularly Capacity Market participants. We also invite responses from other interested stakeholders.
How to respond
Please submit your responses by 24 May 2026 by emailing EMR_CMRules@ofgem.gov.uk.
Consultation documents
Capacity Market Rule Change Proposals 2026: statutory consultation [PDF, 1.86MB] Get emails about this page Print this page
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