Much of the market discussion around REMIT II has focused on reporting deadlines. But for many firms, the larger operational challenge may be something else entirely: managing the growing complexity of reporting data.
The implementation materials published in April 2026 set out a significant planned expansion of REMIT reporting schemas, introduce additional transaction-linkage requirements, and increase the importance of lifecycle traceability across reporting workflows.
The schemas have not yet been finalised. While significant changes to the published drafts are not currently expected, minor amendments to individual fields or requirements remain possible.
For market participants, this is not simply a reporting update. It is a scalability challenge.
In our previous article, The Deadline Paradox in REMIT II: Why Some OTC Trades Move from T+1 to T+10, we explored how the revised framework changes operational reporting timelines for many bilateral OTC transactions. But while some firms may gain greater flexibility around reporting deadlines, the infrastructure required to support REMIT II reporting is simultaneously becoming far more demanding.
One visible sign of this growing complexity is the planned expansion of REMIT reporting schemas ahead of the expected mandatory transition date of 29 October 2027.
The figures below reflect the changes set out in the currently published drafts. Although major revisions are not anticipated, the schemas remain subject to finalisation and minor amendments may still be made.
| Table | Previous Fields | Proposed Fields | Key Planned Additions |
|---|---|---|---|
| Table 1 | 58 | 89 | LNG data, Algo ID, liquidity flags |
| Table 2 | 45 | 51 | PPA specifications, linked transaction IDs |
| Table 3: Electricity transport | 58 | 65 | TSO IDs, auction specifications |
| Table 4: Gas transport | 41 | 45 | Product types, allocation mechanisms |
| Table 5 | New | 13 | Trade-matching system data and lifecycle traceability |
At first glance, this may appear to be a straightforward increase in reporting fields. In practice, however, the challenge is much broader than simply handling more data.
As reporting requirements become more granular, firms face increasing pressure to source, validate, enrich, reconcile, and maintain interconnected reporting data across the full transaction lifecycle.
The operational burden is no longer limited to report submission. Increasingly, it involves maintaining reporting continuity and consistency across multiple systems, workflows, and lifecycle events.
The planned expansion of reporting schemas creates pressure across almost every part of the reporting process. Additional reporting fields may require firms to pull data from multiple environments, including:
This becomes particularly challenging when data definitions, identifiers, or lifecycle events are not fully aligned across systems.
As reporting structures become more interconnected, operational teams may encounter growing pressure around:
For many firms, the challenge is no longer simply whether reporting can be completed on time. The challenge is whether reporting infrastructure can scale alongside increasingly complex regulatory expectations.
One of the most significant elements currently proposed under the revised REMIT II framework is the introduction of a new Table 5 reporting category.
Based on the published drafts, Table 5 would introduce additional requirements around trade-matching system data, transaction linkage, and lifecycle traceability. While the final schema may still be subject to minor amendments, the proposal reflects a broader regulatory emphasis on reporting continuity across transaction events.
Transactions are no longer viewed purely as isolated reporting submissions. Increasingly, regulators are focused on how trades, amendments, lifecycle events, and linked transactions connect throughout the reporting chain.
For market participants, this raises the operational importance of maintaining consistent identifiers, managing linked transaction references, and preserving continuity across evolving reporting structures.
As REMIT II reporting requirements continue to develop, firms should already be evaluating whether existing reporting workflows are capable of supporting the more granular and interconnected obligations currently proposed.
Key areas to assess may include:
Preparing against the published drafts does not mean assuming that every proposed field will remain unchanged. It means ensuring that reporting infrastructure is sufficiently adaptable to accommodate the expected direction of the regulation and any minor revisions introduced before finalisation.
Many existing REMIT reporting environments were originally designed around narrower schema requirements and less interconnected reporting obligations. Under the framework currently proposed, firms relying heavily on fragmented workflows, manual enrichment processes, or spreadsheet-driven reconciliation may encounter increasing operational strain.
This becomes particularly important during the schema transition period. Under the currently published approach, transactions reported before 29 October 2027 would not require re-reporting, while lifecycle events occurring after the transition date would need to follow the revised reporting formats.
Firms may therefore need to maintain continuity between legacy and revised reporting structures simultaneously, increasing the importance of scalable reporting infrastructure and consistent lifecycle management.
While the detailed technical requirements remain subject to finalisation, the operational need to manage both historical and revised reporting structures is already becoming clear.
Although the revised reporting schemas are currently expected to become mandatory from October 2027, preparation will need to begin much earlier for many organisations.
Market participants should already be considering:
The firms best positioned for REMIT II implementation will likely be those treating the planned schema expansion as an operational transformation challenge, rather than simply a compliance exercise.
As REMIT II reporting obligations continue to develop through 2027 and beyond, flexibility within reporting infrastructure becomes increasingly important.
Fidectus GEN has been designed to support evolving reporting requirements, including expanded reporting schemas, lifecycle traceability workflows, and complex validation requirements. This enables market participants to adapt more efficiently as regulatory specifications are finalised, without relying on fragmented manual processes or extensive reporting reconfiguration.
In an environment where reporting obligations are becoming increasingly data-intensive, scalable reporting infrastructure is no longer simply a compliance consideration. It is an operational one.
The currently proposed expansion from 58 to 89 fields within Table 1 is not simply a technical detail within REMIT II. Even if minor adjustments are made before the schemas are finalised, the drafts reflect a broader shift towards more granular, interconnected, and traceable reporting requirements across European energy markets.
For firms preparing for the phased implementation timeline through 2029, the challenge is no longer simply whether reporting obligations are increasing. The challenge is whether existing reporting infrastructure, data-governance processes, and operational workflows are capable of scaling alongside them.
As REMIT II continues reshaping the operational realities of energy-market reporting, firms that invest early in scalable reporting infrastructure, lifecycle traceability, and adaptable reporting workflows will be better positioned to manage both the final requirements and future regulatory complexity with greater operational resilience.
As reporting requirements become more granular and interconnected, many firms are reassessing whether their existing workflows and reporting infrastructure are prepared for the next phase of REMIT II implementation.
Fidectus works with market participants to help simplify reporting operations, strengthen lifecycle traceability processes, and prepare reporting environments for evolving schema and data-governance requirements.