Auditability as a Market Feature: How Distributed Ledger Technology Reduces Friction in Balancing and Aggregation
Third article in a series on regulatory innovation in energy and distributed ledger technology, informed by the European Blockchain Sandbox programme.
The auditability gap in balancing markets
Europe's balancing markets are integrating fast. Cross-border platforms like PICASSO and MARI are replacing national silos with continent-wide merit order lists for aFRR (Automatic Frequency Restoration Reserve) and mFRR (Manual Frequency Restoration Reserve). The incoming Network Code on Demand Response will formalise independent aggregation and widen market access for smaller, distributed assets. Batteries, heat pumps, and electric vehicles are being pooled into virtual fleets and offered as balancing resources at a scale that would have been unthinkable a decade ago.
More flexibility in the system means a more resilient grid. But the operational infrastructure underneath these markets was built for a simpler time, when a handful of large generators provided reserves and the data flows between parties were manageable.
Today, activations are recorded by the TSO (Transition System Operator). Metering data flows through DSOs (Distribution System Operators) and market operators. Settlement calculations happen in separate systems at different timescales. Each party maintains its own records, and reconciliation between them is manual, slow, and expensive. In several European markets, final balancing settlement takes weeks, with correction windows stretching months further. The evidence for any given activation exists, but it is scattered across organisations with no shared, tamper-evident record tying it together.
This is not a technology failure. It is a structural gap: the multi-party processes that underpin balancing were never designed for the scale, speed, and complexity that the energy transition now demands.
Why this matters more now
Three forces are converging to make this gap harder to ignore.
First, the number of participating assets is growing by orders of magnitude. Aggregating thousands of small DERs (Distributed Energy Resources) into a single balancing portfolio means thousands of individual activations, measurements, and settlement line items per dispatch cycle. Manual reconciliation does not scale to this.
Second, the regulatory bar for evidence and compliance is rising. NIS2 imposes cybersecurity risk management obligations on entities providing aggregation, demand response, and energy storage services. The Cyber Resilience Act introduces product-level security requirements for digital elements in critical infrastructure. The Network Code on Cybersecurity for electricity sets standards for cross-border flows. Each of these frameworks increases the burden of proof on market participants: who did what, when, at whose instruction, and can it be independently verified?
Third, regulators themselves are actively exploring where DLT fits. The European Blockchain Sandbox programme ran three cohorts of regulatory dialogues on DLT use cases between 2023 and 2026. Its 3rd Cohort Best Practices Report examined DLT for energy balancing and aggregation specifically, identifying auditability and cross-party data integrity as areas where the technology addresses real operational friction. This was a regulator-led inquiry, not a technology-push exercise.
The promise of DLT
It is worth being precise. DLT (Distribution Ledger Technology) does not replace TSO dispatch systems or metering infrastructure. It does not require parties to migrate to a single platform. What it offers is a shared, append-only record that multiple parties can write to, where entries are cryptographically signed, time-stamped, and linked, making them tamper-evident after the fact.
In balancing markets, this means the critical events in an activation lifecycle (bid, dispatch, measured response, settlement output) can each be committed to a shared ledger as they occur. Each commitment is a cryptographic hash of the underlying data, signed by the originating party. The raw data itself — telemetry, personal information, commercial terms — stays off-chain, in the operational systems of the parties that own it, with access governed by role-based policies and existing data sharing agreements.
The EBS Best Practices Report flags this on-chain/off-chain separation as a recurring design principle across DLT use cases, driven by GDPR data minimisation requirements and practical performance needs. In the energy context, the report emphasises alignment with sector data sharing rules under the Electricity Directive and the upcoming Network Code on Demand Response.
There are three practical effects:
First, cross-party auditability without a centralised database. Each participant sees the same sequence of commitments. An auditor or regulator can verify the chain of evidence without requesting separate data exports from every counterparty.
Second, non-repudiation of critical events. Cryptographic signatures mean no party can plausibly deny having submitted a bid or issued a dispatch instruction. This supports both dispute resolution and regulatory compliance, aligning with the audit trail expectations that NIS2 and the Network Code on Cybersecurity are establishing.
Third, reduced reconciliation overhead. When all parties work from the same commitments, the scope for discrepancy narrows. Settlement logic runs against shared, pre-verified data rather than against separately maintained records that need to be matched first.
Precedent from adjacent domains
This pattern is already at work in neighbouring parts of the energy sector.
In renewable energy certification, blockchain-based platforms have been used as digital notaries to match hourly production and consumption data for corporate power purchase agreements. FlexiDAO's work with Microsoft, Eneco, and the Dutch certificate issuing body CertiQ established one of the first blockchain-backed hourly certification mechanisms under the EnergyTag standard and the European Guarantees of Origin scheme. EDF's TrackElec system applied a similar approach for hourly green electricity traceability during the Paris 2024 Olympics. In both cases, the core value was the same: an immutable, verifiable record that cuts manual reconciliation and gives auditors direct access to evidence.
In financial markets, the European Stability Mechanism argued in late 2025 that DLT-based settlement infrastructure could help overcome persistent fragmentation in Europe's post-trade securities landscape. The insight transfers directly: a shared ledger reduces reconciliation costs and broadens trust across counterparties without requiring dependence on a single centralised system.
The EU Blockchain Observatory and Forum's energy sector report noted that DLT can reduce processing inefficiencies between parties engaged in interconnected grid management. IEEE has published a reference architecture guide (IEEE 2418.5) for DLT in the electrical power industry. These are not fringe proposals. They reflect growing institutional recognition that the technology fits a specific, well-defined problem.
DLT based infrastructure shows a lot of promise for balancing markets. However, honest conversations are needed about what "near-instant settlement" actually means in a regulated context, how staged adoption works in practice, and where the regulatory gaps remain. That will be the subject of the next article in this series.
This article draws on findings from the European Blockchain Sandbox 3rd Cohort Best Practices Report (February 2026), published by the European Commission's DG CONNECT, as well as work by the EU Blockchain Observatory and Forum, ENTSO-E, and IEEE. ENODA is building a coordination and settlement platform for distributed energy resources. This is the third article in a series exploring regulatory themes from our participation in the European Blockchain Sandbox.