REMIT inside information
When does a power plant outage go through ENTSO-E, and when should it be published through an Inside Information Platform (IIP)? The answer depends on two separate checks: the electricity transparency rules and the REMIT definition of inside information.
Which rules apply to an outage?
Electricity transparency
Under Regulation (EU) No 543/2013, Article 15 sets out which generation and production unit outages are published through the ENTSO-E Transparency Platform. Plant operators generally supply the data to their transmission system operator (TSO). A third-party data provider can submit the data directly to the platform with the TSO’s prior agreement under Article 4(2).
REMIT inside information
Under Article 4 of REMIT, market participants must disclose inside information effectively and in a timely manner through an IIP. For an outage, the assessment includes whether the information is precise, has not been made public, relates directly or indirectly to a wholesale energy product and would likely have a significant effect on its price if disclosed.
When does the 100 MW threshold apply?
For an individual generation unit, Article 15(1)(a) and (b) covers planned unavailability of 100 MW or more, changes of that size in planned unavailability, and changes of that size in actual availability, where the event is expected to last for at least one market time unit. The threshold concerns the capacity affected by the event. Separate criteria apply to the production unit as a whole under Article 15(1)(c) and (d).
REMIT has no general 100 MW disclosure threshold. If the available capacity of a turbine drops from 120 MW to 60 MW, the event affects 60 MW. That is below the Article 15 threshold for the individual generation unit. The market participant must still assess whether the information needs to be disclosed under REMIT.
Two examples of outage reporting
Both examples assume that the event qualifies as inside information under REMIT.
120 MW outage
The event also meets the Article 15 criteria.
- The plant operator supplies the outage data to the relevant TSO.
- The TSO passes the data to ENTSO-E for publication.
- ENTSO-E makes the data available to ACER through the fundamental data channel.
60 MW outage
The event is below the threshold for the individual generation unit.
- The market participant submits an Urgent Market Message (UMM) to an IIP.
- The IIP publishes the message for the market.
- The IIP makes the message available to ACER through the inside information channel.
Frequently asked questions
Can one ENTSO-E publication meet both obligations?
Yes. The ENTSO-E Transparency Platform is also listed as an IIP. A single publication can satisfy both obligations if it covers the same event and makes the required inside information publicly available in full, on time and in the required format.
When can I use the Webware IIP?
If the ENTSO-E route would leave out relevant inside information or publish it too late, you can use the Webware IIP to publish a complete UMM in time. Any separate obligation to supply electricity transparency data still applies through the agreed reporting route.
Which reporting manual should I use?
The ENTSO-E Manual of Procedures explains how to supply data for the Transparency Platform. In ACER’s REMIT Manual of Procedures, Section 6.2.1 covers ENTSO-E fundamental data. Chapter 7 and Annex VII cover inside information reporting and the UMM data fields.
Regulations and reporting guidance
- EU Electricity Transparency Regulation (EU) No 543/2013, Articles 4 and 15
- REMIT Regulation (EU) No 1227/2011, Articles 2 and 4
- REMIT Implementing Regulation (EU) 2026/256, Article 11
- ENTSO-E Transparency Platform
- ENTSO-E Manual of Procedures
- ACER REMIT reporting guidance and Manual of Procedures
- ACER Guidance on REMIT, paragraph 122
Publish a UMM through the Webware IIP
If you need to publish inside information about an outage, contact us for help getting started with the platform.
