For companies reporting transactions under REMIT, several topics from the report are particularly relevant — including new investigation powers for ACER, changes in reporting statistics, and developments related to Inside Information Platforms.
Below is a summary of the most important updates and what they mean for users of our REMIT Reporting Portal.
Following the REMIT II revision (Regulation (EU) 2024/1106), ACER is preparing to conduct cross-border investigations into suspected market abuse.
The new rules define how ACER will handle investigations involving multiple EU countries. They introduce a clear procedural framework designed to ensure transparency, fairness and legal certainty.
ACER’s investigation powers will cover potential violations such as:
During investigations ACER will be able to request information, conduct inspections and interview relevant parties. Where necessary, the Agency may also impose periodic penalty payments to ensure cooperation.
However, enforcement decisions will still remain with national regulatory authorities, which will receive investigation reports from ACER and decide on sanctions.
The full operational start of cross-border investigations is expected from 2026 onwards, once ACER completes the implementation of the required procedures and organisational setup.
Key takeaway: Compliance and data transparency will become even more important, particularly for companies operating across multiple EU markets.
ACER highlighted the importance of strong engagement with market participants in preparation for upcoming regulatory changes.
In November 2025 ACER and the European Commission held a joint REMIT workshop attended by around 850 stakeholders, focusing on transparency, reporting obligations and market integrity.
For 2026 ACER plans to increase stakeholder engagement through:
These activities will support the implementation of new delegated and implementing acts under REMIT II, which will further define reporting requirements and oversight of reporting entities. Market participants should therefore closely follow regulatory developments in 2026 and prepare their reporting processes accordingly.
The report shows a significant increase in reporting volumes across European wholesale energy markets.
In 2025:
This rapid growth demonstrates the increasing scale of market monitoring and highlights the importance of automated reporting solutions.
Trading activity on organised energy markets also increased significantly.
In 2025:
ACER regularly updates reference lists used in REMIT reporting.
At the end of Q4 2025:
The List of Standard Contracts also expanded:
Keeping reporting systems aligned with these updates is essential for ensuring compliant transaction reporting.
The number of registered market participants continues to grow.
By the end of 2025:
This gap suggests that some registered entities may not be actively reporting or may not fully comply with REMIT reporting obligations.
The report also shows that:
The report highlights ongoing challenges related to inside information disclosure.
As of early 2026:
Important: ACER emphasises that publishing information only on a company website does not meet REMIT disclosure requirements. Market participants should ensure that inside information is published through an approved IIP.
ACER continues to monitor suspicious trading activity and cooperate with national regulators.
By the end of 2025:
One highlighted case involved a trader attempting to manipulate the Spanish gas market by placing large orders at unusually low prices during benchmark price calculation periods.
Such enforcement cases underline the importance of robust compliance systems and accurate reporting.
The latest ACER report confirms that regulatory oversight of EU energy markets continues to intensify.
Market participants should focus on:
Our REMIT Reporting Portal helps companies meet these requirements by automating data collection, validation and submission to ACER, while ensuring full compliance with the latest reporting standards.