GB in Context: International Comparison

GB's energy data infrastructure does not exist in isolation. The same fundamental challenges (metering, settlement, consumer rights, data sharing) are being tackled by every comparable electricity market. Some jurisdictions are years ahead of GB on specific dimensions; others look to GB as a model. This module compares GB across eight key dimensions with the EU, Australia, the Nordics and the US.

Eight dimensions reveal where GB leads and where it trails. Every dimension has direct consequences for investment signals, consumer choice, and the pace of decarbonisation. The comparison is instructive not because any single jurisdiction gets everything right, but because the pattern of relative strengths and weaknesses reveals which reforms will yield the greatest return.

Settlement granularity

GB's 30-minute settlement period is the coarsest among all comparable peers. Australia's National Electricity Market moved to 5-minute settlement in October 2021, following a multi-year transition that began with the AEMC's rule determination in 2017. The EU adopted 15-minute settlement from June 2025 under the Electricity Balancing Guideline. US ISO/RTO markets have used 5-minute intervals for decades, PJM and ERCOT both settle on this basis.

Finer granularity matters because it enables more accurate price signals. A battery storage operator in Australia can capture value from a 3-minute price spike that would be averaged away in GB's 30-minute window. When MHHS completes its cutover in July 2027, GB will move to half-hourly settlement for all meter points, but this will still be 30-minute granularity, six times coarser than Australia. The question of whether to pursue 15-minute or even 5-minute settlement is already being raised in industry consultations, though no formal timeline exists.

Smart meter penetration

DESNZ reported over 41 million smart and advanced meters at the end of March 2026, with over 38 million operating in smart mode or classified as advanced. This is a respectable figure globally, but the picture is highly variable internationally. Italy and Sweden achieved near-universal smart meter coverage over a decade ago. Germany, despite being Europe's largest economy, sits below 30 percent because its legal framework required a different technical standard. The US has reached approximately 77 percent nationally, though coverage varies dramatically by utility territory. Australia's NEM averages around 56 percent, but Victoria reached 99 percent through a mandated rollout.

What matters is not just the number of smart meters installed but how effectively the data flows into market and operational systems. GB's DCC-operated communications infrastructure is unique: no other country has built a dedicated wide-area network specifically for smart metering. The US relies on utility-specific networks. Australia uses the public mobile network. The Nordic countries similarly use public infrastructure. GB's dedicated approach offers reliability advantages but also imposes higher costs per meter point.

Consumer data rights

Australia's Consumer Data Right (CDR) has been operational since 2020. It gives consumers a legal right to access and share their energy data with authorised third parties through standardised APIs. The CDR is not energy-specific, it began in banking and was extended to energy, which means the legal framework, accreditation regime, and technical standards were already mature when energy was added.

GB's equivalent is an energy Smart Data scheme under the Data (Use and Access) Act 2025. This legislation received Royal Assent but the implementing regulations are still being developed. Industry estimates place GB approximately three to five years behind Australia in practical consumer data portability. The EU sits somewhere between: GDPR provides strong data access rights but does not mandate the standardised API infrastructure that makes CDR practically useful. The US Green Button programme is voluntary and adoption varies enormously by utility.

Centralised data hubs

This is the dimension where the gap between GB and the best international practice is most stark. The Nordic countries operate single national data hubs, Norway's Elhub, Denmark's DataHub, Finland's Datahub, that handle all metering data, supplier switching, and consumer access through a single platform. GB, by contrast, fragments these functions across DCC (meter communications), DTS (data transfer for switching), DIP (market messaging), and DSI (discovery and trust, not yet operational). A new market entrant in Norway needs one API integration. In GB, the same entrant needs five or more.

DER visibility, open data governance, and market access

Australia's National DER Register is already operational, giving AEMO visibility of installed solar, batteries, and other distributed energy resources. GB's Flexibility Market Asset Registration is still developing the market rules and data arrangements needed for a more coordinated flexibility market. On open data governance, GB's “presumed open” principle under the Data Best Practice licence condition is arguably more legally enforceable than equivalents in most other jurisdictions. GB has made material progress on CIM standardisation through the LTDS direction and BSI-hosted GB CIM artefacts, though the May 2026 derogation shows that profile delivery remains staged rather than complete.

The AEMC gave a plain reason for taking Australia to five-minute settlement: a five-minute price tracks how the market is actually dispatched, so it pays fast-response assets for the speed they provide instead of averaging that value away across a longer period. The argument transfers directly to GB. A 30-minute settlement period smooths over the very behaviour that batteries and demand response are built to deliver, which is why proponents of moving GB beyond the 30-minute standard, towards 15-minute or 5-minute settlement, keep returning to the Australian determination. It is listed at the end of this module.

Elhub is a single national platform operated by Statnett (Norway's TSO) that handles all electricity metering data for the entire country. When a smart meter records a reading, it flows through Elhub. When a consumer switches supplier, Elhub processes the switch. There is no fragmentation between collection systems, settlement systems, and market data systems because all functions run on a single platform.

The Danish equivalent, DataHub, performs a similar function for the Danish electricity market. Together, the Nordic model represents the most integrated approach to energy data management in the world. With 99 percent smart meter penetration in both Norway and Sweden, virtually all data flowing through these platforms is actual rather than estimated. This eliminates the estimation errors that plague markets with lower penetration rates.

One-hop vs five-hop architecture

The critical architectural difference between Elhub and GB's system is the number of hops between data origination and data use. In Norway, meter data takes one hop: from the meter (via the grid company) to Elhub. Any authorised party can then access it from the same platform. The path is: meter → Elhub → user.

In GB, the equivalent journey requires five or more hops. A meter reading travels from the meter through the DCC communications hub, to the data service provider, then to the supplier, then potentially to a data collector, then to the settlement agent, then to Elexon for settlement. If a third-party innovator wants to access that same data for a consumer-facing service, they need to navigate a separate consent framework, potentially involving the DCC's Other User access regime or the future Smart Data Scheme.

Each hop introduces latency, potential for error, and a point where data formats may need translation. Elhub's standardised APIs mean any market participant can integrate with a single interface. A new energy retailer entering the Norwegian market needs one API integration. In GB, the same entrant must integrate separately with DTS, DCC, and DIP at a minimum, plus individual supplier systems and metering agents. The barrier to entry is not regulatory, it is technical complexity.

The consolidation debate

Could GB replicate the Elhub model? The technical answer is yes: there is nothing architecturally preventing a single GB data hub. The practical answer is far more complex. GB's fragmented system evolved over 25 years of privatisation and incremental reform. Each platform, DCC, DTS, DIP, has its own contracts, stakeholders, funding mechanisms, and regulatory governance. The DSI represents the closest thing to a unifying layer, but it is explicitly designed as a discovery and trust service rather than a data hub.

Proponents of consolidation argue that the ongoing cost of maintaining multiple platforms, each with its own development roadmap and interface specifications, exceeds what a single platform would cost. Opponents argue that the transition risk of migrating live market systems to a single platform is unacceptable, and that the DSI-based federation approach achieves most of the same benefits without the migration risk.

The reality is that GB is already committed to the federated approach through the DSI programme. Whether this achieves Elhub-like simplicity for market participants remains an open question that will only be answerable once the DSI reaches full operation in the 2028 to 2030 timeframe.

NESO sets out the design intent plainly on its own DSI pages: the programme is a common set of governance, processes and technology for secure data and model sharing, not a central store that the existing platforms hand their data to. That wording is the strategic choice in one line, federation rather than consolidation. Instead of rebuilding the data estate around a single platform on the Elhub model, the DSI adds discovery and trust services above DCC, DTS, DIP and the rest, so a participant can find a dataset and be authorised to use it without the underlying platforms merging. Ofgem's decision on DSI governance, which put NESO in the interim coordinating role, is the other half of the picture: the federation is a governance arrangement as much as a technical one. Both sources are listed at the end of this module.

Australia's Consumer Data Right is the most instructive international comparison for GB because it demonstrates what a fully operational consumer energy data scheme looks like. The CDR was introduced in banking first (the “Open Banking” phase) and extended to energy in 2020. It gives consumers a legal right not just to access their data but to direct it to authorised third parties, accredited data recipients, through standardised APIs.

The accreditation regime is critical. Any business wanting to receive consumer energy data under CDR must be accredited by the Australian Competition and Consumer Commission (ACCC). The accreditation process assesses information security, privacy practices, and ongoing compliance. This is not a light-touch regime: accreditation involves substantial technical and legal investment, but it creates genuine consumer trust because consumers know that any CDR-accredited recipient has been independently assessed.

GB's planned Smart Data Scheme under the Data (Use and Access) Act 2025 draws heavily on the CDR model. The Act provides the legal basis for requiring energy companies to share customer data with authorised third parties through standardised interfaces. However, the implementing regulations are still being developed, and industry estimates place the scheme becoming operational no earlier than 2027 or 2028, a full seven to eight years after Australia's CDR launched for energy.

What the gap means in practice

The practical consequence of this gap is that Australian consumers already have access to a range of data-driven energy services that GB consumers do not. An Australian household can authorise a third-party app to access their detailed energy usage data, combine it with tariff information, and provide switching recommendations, personalised efficiency advice, or optimised EV charging schedules. These services exist because the data access infrastructure is in place.

In GB, comparable services either do not exist or rely on workarounds: screen scraping supplier portals, manual CSV downloads from the IHD manufacturer, or proprietary integrations with specific suppliers. None of these approaches scale. The Smart Data Scheme is designed to close this gap, but until it is operational, GB consumers face a data access deficit compared to their Australian counterparts.

The EU sits in an intermediate position. GDPR provides strong individual data access rights, and consumers can request their energy data from their supplier. However, GDPR does not mandate the standardised API infrastructure that makes the Australian CDR or the planned GB Smart Data Scheme practically useful at scale. The EU Data Act (entered into force in 2024) aims to address this, but energy-sector implementation is still being developed.

The US Green Button programme is the weakest comparator. It is voluntary, and adoption varies enormously by utility. Some utilities provide excellent Green Button implementations; many provide none. There is no federal equivalent to Ofgem that could mandate a universal standard, which means the US will remain fragmented on consumer data access for the foreseeable future.

The European Union is not solving energy data access market by market. It is writing common rules. Implementing Regulation (EU) 2023/1162, which has applied since 5 January 2025, sets harmonised requirements for access to electricity metering and consumption data across member states: who may reach a customer's data, in what format, and on what timescale. Where GB assembles access rights one institution at a time, through the Retail Energy Code, the DCC licence, the Data Best Practice condition and the forthcoming Smart Data scheme, the EU is codifying the same rights in a single instrument that every member state must implement.

Above the regulation sits the Common European Energy Data Space, the EU's plan for a shared, standardised space where energy data can be exchanged across borders. The European Commission published Blueprint v3.0 in September 2025 and is advancing its development. CEEDS is a concrete artefact, not an aspiration: it names the reference architecture, the roles and the interoperability rules a pan-European data space needs. The point for GB is not whether it must comply. It is that the access problems GB is working through one platform at a time are being standardised next door, and cross-border flows feel it first. Trades over the interconnectors touch counterparties who already operate under 2023/1162, so GB participants meet the EU standard at the border before they meet it at home.

Two further comparators round out the international picture. In North America, the Energy Services Provider Interface (ESPI), known through Green Button and maintained under NAESB, lets consumers download or share their usage data in a common format. It is an early, widely adopted model for portable consumer energy data, though adoption in the United States is voluntary and uneven. In Denmark, the Energinet DataHub holds around 3.3 million electricity metering points in a supplier-centric model with citizen access, a second single-hub benchmark alongside Norway's Elhub. Between the EU's common rules, the Nordic hubs and North America's ESPI, GB's institution-by-institution approach is the outlier, not the norm.