DCC Review Phase 2: Centralised Registration Service arrangements - decision

What changed

Ofgem has decided who will operate the Centralised Registration Service (CRS), the new central database of meter and customer registration data that sits at the heart of Phase 2 of the DCC Review. The decision was published on 2 December 2024 and is a companion to the wider Phase 2 conclusions on DCC governance and allowed revenue. The CRS replaces the legacy registration arrangements (currently fragmented across electricity supplier hubs and the gas Xoserve register) with a single source of truth for which supplier serves which meter point.

The substantive decision is operative rather than consultative. It locks in the operator role and the basic architecture, leaving the remaining Phase 2 strands (board composition, appointment and incentivisation, interim governance changes) for subsequent decisions. Two further Phase 2 consultations are flagged: one on allowed revenue cost control, and one on the future role, objectives and operating model of the DCC itself.

What this means in practice

The CRS is the data layer that determines how fast and how cleanly customers can switch supplier, how settlement runs identify the responsible party for each meter, and how third parties (price comparison sites, demand-side response aggregators, energy retailers building new products) access registration data. The structural choice is whether the GB system continues to operate registration as a distributed function with reconciliation between participants, or as a centralised utility with a single registry. This decision confirms the latter.

For suppliers, the operational implication is that switching flows and customer onboarding will run through one interface rather than the current dual-fuel split between MPAS providers (electricity) and Xoserve (gas). The cost stack moves with it: rather than paying per-meter charges across multiple registration agents, suppliers pay into the DCC charging regime, which is recovered from customers through standing charges. The total cost has not yet been set; that comes in the allowed revenue consultation, which is the number that matters for the bill impact.

For market entrants, the question is whether the CRS lowers the barrier to entry by giving new suppliers a single integration point, or raises it by routing more market function through a single regulated monopoly with the transaction costs that implies. The decision document does not resolve this directly; the answer depends on the access terms and the API specification, which sit downstream.

For settlement, the CRS is a precondition for Market-wide Half Hourly Settlement (MHHS) to operate cleanly at scale. MHHS depends on accurate, real-time knowledge of which supplier is responsible for each meter at each half-hour. The legacy registration arrangements were built for monthly settlement and quarterly switching, and the friction shows. Whether the CRS goes live in time to support MHHS dispatch dates is the practical test of this decision.

The transformation potential depends on three design choices that are now downstream of this decision: the data model (what fields the CRS holds and at what granularity), the access regime (who can read what, on what terms, with what consent mechanism), and the change control process (who decides when the schema changes, and how fast). A centralised registry that is rigid, slow to change, and access-restricted is a worse outcome than the fragmented status quo. A centralised registry with clean APIs, customer-controlled data sharing, and a fast change process is the foundation for a more competitive retail market.

What happens next

Ofgem has flagged a sequence of follow-on publications. The remaining governance decision will cover DCC Board composition, appointment requirements, incentivisation of the Board and executive leadership, and interim governance changes. Two further Phase 2 consultations are due: determination of allowed revenue (the cost control mechanism that sets what the DCC and CRS can charge), and the future role of the DCC, its objectives, and its operating model.

The allowed revenue consultation is the one to watch on cost. It will set the regulatory framework for how the DCC, including the CRS, recovers its costs from licensed parties and ultimately from consumers. Whether this is rate-of-return on capital, a totex framework with incentive mechanisms, or something closer to a fixed price contract will determine whether the DCC is incentivised to build infrastructure or to deliver service.

The future role consultation is the strategic one. The DCC was originally scoped to manage smart meter communications. Phase 2 expands it materially to include registration. The question of where DCC scope ends and where competitive markets begin is unresolved and matters for every adjacent service, including data access for third parties, switching mechanics, and settlement integration.

Implementation timing for the CRS itself runs through detailed design, build, and migration phases. The migration from legacy MPAS and Xoserve registration to a single CRS is the operational risk, and the experience of comparable transitions (smart meter rollout, MHHS) suggests this will take longer and cost more than the published timetable. Suppliers planning system integration should treat the published dates as a floor, not a ceiling.