Coverage Check — Electricity Capacity Market Reform
Audit of public-source material that may be missing from this policy thread.
Likely missing — should be added
8 itemsThe October 2024 consultation is on the thread but the parallel call for evidence and its May 2025 outcome are separate documents not currently listed.
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What it adds: Adds the call for evidence on decarbonisation pathways for unabated gas plants and its May 2025 government response, covering alternative exit pathways and longer-term capacity modelling.
"This call for evidence ran from 15 October 2024 to 10 December 2024, seeking views on decarbonisation pathways for unabated gas plants; the government response was published simultaneously with the consultation response in May 2025."
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— Electricity Capacity Market Reform
This statutory annual report directly covers the Capacity Market reform programme and is a key public record document for the thread.
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What it adds: Adds the December 2025 statutory security of supply report, which summarises all active CM reform consultations and their status, providing an authoritative overview of the reform programme.
"The consultation and call for evidence closed for responses on 27 November 2025, and a government response will be published in Spring 2026; the report covers CM reform progress including the October 2025 consultation and winter 2025 consultations."
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— Electricity Capacity Market Reform
This statutory annual report covers the Capacity Market reform programme as of December 2024 and is a key public record document for the thread.
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What it adds: Adds the December 2024 statutory security of supply report, which covers the October 2024 CM consultation and call for evidence and sets out the reform context for 2025.
"The simultaneous call for evidence is seeking views on alternative exit pathways for unabated gas to leave the CM to decarbonise, and future options for developing NESO's modelling of longer-term capacity needs."
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— Electricity Capacity Market Reform
The Panel of Technical Experts report on the NESO Electricity Capacity Report is a statutory output that directly informs Capacity Market auction targets and reform decisions.
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What it adds: Adds the July 2025 PTE report on the NESO ECR, which provides technical scrutiny of de-rating factors and capacity modelling relevant to the reform of low-carbon technology participation.
"The PTE report covers de-rating factors for new technologies including hydrogen and carbon capture, and notes issues with embedded plant data that affect CM modelling."
This is a distinct call for evidence published alongside the October 2024 consultation, covering alternative decarbonisation exit pathways for unabated gas — a key element of the reform programme not separately listed on the thread.
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What it adds: Adds the October 2024 call for evidence on decarbonisation pathways, which is a separate document from the consultation already on the thread and has its own government response.
"This call for evidence ran from 15 October 2024 to 10 December 2024, seeking views on decarbonisation pathways for unabated gas plants; the government response was published simultaneously with the consultation response in May 2025."
This statutory annual report is a key public record document covering the state of the Capacity Market reform programme as of December 2024, including the October 2024 consultation.
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What it adds: Adds the December 2024 statutory security of supply report, which is a required annual statutory publication directly covering CM reform progress.
"The majority of the capacity required to meet forecasted peak demand for the 2025/2026, 2026/2027 and 2027/2028 delivery years has already been procured in historical T-4 CM auctions."
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— Electricity Capacity Market Reform
The Panel of Technical Experts report on the NESO ECR is a statutory output that directly informs Capacity Market auction targets and is a key public record for the reform thread.
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What it adds: Adds the July 2025 PTE findings publication, which is the gov.uk landing page for the statutory technical expert review of the 2025 Electricity Capacity Report.
"The PTE report provides technical scrutiny of NESO's Electricity Capacity Report, covering de-rating factors for new technologies including hydrogen and carbon capture relevant to CM auction targets."
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— Electricity Capacity Market Reform
This is the gov.uk publication landing page for the December 2025 statutory security of supply report, which is a required annual statutory publication directly covering all active CM reform consultations.
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What it adds: Adds the December 2025 statutory security of supply report publication page, which is the primary official record for this statutory annual report covering the full CM reform programme.
"The government aims to publish responses to the consultation on the proposal regarding location changes of CMUs in winter 2026 and the responses to the other consultations in spring 2026."
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— Electricity Capacity Market Reform
Related but separate issue
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Low confidence — needs review
2 itemsThis is the press release accompanying the June 2023 Phase 1 consultation, which is already on the thread; the news announcement may add context but is likely duplicative.
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What it adds: Adds the ministerial press release for the June 2023 Phase 1 consultation, but the consultation itself is already on the thread.
"UK government outlines important proposals to reform Great Britain's Capacity Market, ensuring it is fit for a net zero future while ensuring the security of our electricity supply."
The written statement from 2026-01-29 on the thread covers the locational changes response; this outcome page may cover the same or a related response — needs verification.
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What it adds: May add the government response to the December 2025 low-carbon technologies consultation if published separately from the locational changes response already on the thread.
"The government published its response to the consultation on proposals to integrate low carbon technologies and enhance delivery assurance ahead of Prequalification 2026."
Already covered in this thread
14 itemsThis is a direct Capacity Market consultation published in December 2024 that is closely linked to the consumer-led flexibility call for evidence already on the thread, and its government response was published in June 2025.
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What it adds: Adds the December 2024 consultation on CM Rules modernisation and consumer-led flexibility delivery assurance, which is a distinct event from the call for evidence already on the thread.
"This consultation ran from 10am on 16 December 2024 to 11:59pm on 17 February 2025, seeking views on modernising CM Rules and improving participation and delivery assurance of consumer-led flexibility."
This is the government response to the December 2024 CM Rules modernisation consultation, a key policy outcome directly relevant to the Capacity Market Reform thread.
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What it adds: Adds the June 2025 government response confirming implementation of CM Rules modernisation and consumer-led flexibility delivery assurance changes ahead of Prequalification 2025.
"This consultation, launched in December 2024 and concluded in February 2025, sets out changes to the CM to modernise existing CM Rules and improve participation and delivery assurance of consumer-led flexibility."
This is the mandatory annual open letter on new technologies in the Capacity Market, published September 2025, which is a statutory requirement under CM Rule 2.4 and directly relevant to the reform thread.
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What it adds: Adds the 2025 annual new technologies open letter, a statutory consultation event not currently on the thread.
"Rule 2.4 of the Capacity Market Rules requires that, by 1 October each year, the Secretary of State consults interested parties to determine whether any new generating technologies are capable of contributing to security of supply."
This is the government response to the 2025 annual new technologies open letter, a statutory output under CM Rule 2.4.1(b), directly relevant to the reform thread's work on hydrogen-to-power and other new technologies.
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What it adds: Adds the November 2025 government response to the new technologies open letter, covering hydrogen-to-power, flexible compute capacity, and offshore hybrid assets.
"On 22 September 2025, the government published its annual open letter inviting views on any new generating technologies which could contribute to security of supply; the department received 4 responses from stakeholders."
This is the mandatory 2024 annual open letter on new technologies in the Capacity Market, a statutory consultation event directly relevant to the reform thread.
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What it adds: Adds the 2024 annual new technologies open letter and its government response, a recurring statutory event not currently on the thread.
"Rule 2.4 of the Capacity Market Rules requires the Secretary of State to consult annually on whether any new generating technologies are capable of contributing to security of supply; this consultation ran from 30 September 2024 to 1 November 2024."
The October 2024 consultation URL is on the thread, but the May 2025 government response/outcome page is a distinct and important policy event confirming implementation decisions for the reform.
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What it adds: Adds the May 2025 consultation outcome confirming policy decisions on lifetime extensions, decarbonisation requirements, and managed exit pathways for unabated gas plants.
"In May 2025, we published the government response to the consultation on proposals to maintain security of supply and enable flexible capacity to decarbonise, covering multi-year CM agreements, decarbonisation plans, and managed exit pathways."
This is the same statutory report already identified above; the publication landing page is the same document.
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What it adds: Already captured in the statutory report candidate above.
"The government aims to publish responses to the consultation on the proposal regarding location changes of CMUs in winter 2026 and the responses to the other consultations in spring 2026."
The citizenspace URL for this consultation is already on the thread; this is the gov.uk landing page for the same consultation.
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What it adds: Already covered by the citizenspace URL on the thread.
"This consultation ran from 15 October to 10 December 2024 and received 41 responses; the government response was published in May 2025."
The Clean Power 2030 Action Plan sets the overarching policy framework that drives Capacity Market reform but is primarily a broader energy policy document rather than a CM-specific event.
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What it adds: Provides the strategic context for CM reform but belongs on a broader Clean Power 2030 / REMA thread rather than this specific CM reform thread.
"Over the period to 2030, security of supply will be protected with the maintenance of an expected 35 GW of unabated gas reserve capacity, complemented by flexible capacity including 23-27 GW of battery capacity."
The citizenspace URL for this consultation is on the thread, but the gov.uk landing page is the primary official record and includes the important update that the MPCM proposals were not proceeded with.
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What it adds: Adds the gov.uk primary landing page for the October 2025 PQ2026 consultation, which includes the significant policy update that the Multiple Price Capacity Market proposals were dropped.
"This consultation ran from 9:30am on 2 October 2025 to 11:59pm on 27 November 2025; the government has decided not to proceed with implementing the policy proposals associated with the Multiple Price Capacity Market."
The citizenspace URL for this consultation is on the thread, but the gov.uk primary landing page is the authoritative official record for this December 2025 consultation.
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What it adds: Adds the gov.uk primary landing page for the December 2025 low-carbon technologies consultation, which is the authoritative source for this event.
"This consultation ran from 11:30am on 2 December 2025 to 11:59pm on 8 January 2026, seeking views on urgent reforms to the CM Rules and Regulations before the upcoming Auction Prequalification round commencing in July 2026."
This URL is already listed in the source URLs on the thread.
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What it adds: Already covered.
"Published the government response to this consultation in May 2025, covering multi-year CM agreements, decarbonisation requirements for new combustion plants, and managed exit pathways."
This URL is already listed in the source URLs on the thread.
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What it adds: Already covered.
"This second statutory 5-year review of the CM, referred to as the 10-year review, takes a backwards-looking approach to analysing the performance of the CM against its original objectives."
This is the HTML version of the December 2024 consultation document; the main landing page is the more appropriate record to add to the thread.
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What it adds: This is the HTML body of the consultation already identified above; the landing page URL is the preferred record.
"Alongside this consultation, the government has simultaneously published a call for evidence on consumer-led flexibility that builds upon proposals from the CM Phase 2 CfE published in 2023."
Background context only
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