Webware Inside Information Platform
When do you need to publish an outage under REMIT? Find out how to assess an event, identify the affected unit and publish an Urgent Market Message (UMM) through an Inside Information Platform (IIP).
On this page
- What is inside information under REMIT?
- Where should I publish it?
- Where can I read published messages?
- Does REMIT have a minimum MW threshold?
- When does the 100 MW threshold apply?
- How does IIP disclosure differ from data reporting to ACER?
- How do I identify the affected asset and its EIC code?
- Do I identify the wind turbine or the whole wind farm?
- Can I combine several solar parks in one message?
- Which event type applies to an electricity storage outage?
What is inside information under REMIT?
Under Article 2(1) of REMIT, information qualifies as inside information when it is specific enough to assess, has yet to be made public, relates directly or indirectly to one or more wholesale energy products, and would likely have a significant effect on their prices if made public.
Planned maintenance, an unexpected outage or a reduction in available capacity can meet these criteria. Assess the facts of the event and the market conditions at the time.
Where should I publish inside information?
Article 4 of REMIT requires market participants to disclose inside information publicly, effectively and in a timely manner through an IIP. For an outage, the platform publishes the information as a UMM. A company website or social media can provide additional visibility after IIP publication.
Where can I read published UMMs?
Use the ACER Inside Information Access Point to find published messages. To publish your own message, submit it through your IIP.
Does REMIT have a minimum MW threshold for inside information?
There is no general minimum MW threshold for IIP disclosure. The market participant assesses each event. The size and duration of the outage, market liquidity, the delivery period, and how tight supply is can all affect the likely price impact. An outage below 100 MW can require disclosure if it meets the REMIT criteria.
When does the 100 MW threshold apply?
Article 15(1)(a) and (b) of Regulation (EU) No 543/2013 applies a threshold of 100 MW or more to specified planned outages and changes in planned or actual availability of a single generating unit expected to last at least one market time unit. The threshold concerns the capacity affected by the event. Article 15(1)(c) and (d) sets separate criteria for production units.
Example. If a turbine’s available capacity drops from 120 MW to 60 MW, the event affects 60 MW. It falls below the single-unit threshold under Article 15(1)(b). If the outage qualifies as inside information under REMIT, publish it through an IIP.
Electricity Transparency Regulation, Article 15 · ENTSO-E guidance on generation outages
How does IIP disclosure differ from data reporting to ACER?
Article 4 of REMIT governs public disclosure of inside information through an IIP. The IIP also makes the disclosed data available to ACER. Transaction and fundamental data reporting have their own requirements under Article 8 of REMIT and the applicable implementing rules. Check each obligation separately when assessing an event or a contract.
How do I identify the affected asset and its EIC code?
Identify the unit whose availability actually changed. If the event affects one generating unit within a power plant, identify that unit at the most detailed level that applies. The EIC (Energy Identification Code) links the UMM to the relevant asset.
- W identifies a resource object, such as a generating unit.
- T identifies a tie line.
- Z identifies a measurement point.
Check the applicable UMM schema for the accepted code types. In its March 2026 update to Annex VII, ACER made the affected asset or unit EIC mandatory in the applicable unavailability schemas and added support for substation codes. ACER gives market participants until December 2026 to implement the update.
ACER update on Annex VII and field 17 · ENTSO-E EIC functions and definitions
Do I identify the wind turbine or the whole wind farm?
Match the asset in the UMM to the scope of the event. If an outage at a single turbine qualifies as inside information and the turbine has its own applicable EIC, identify that turbine. If a shared grid connection fails and the entire farm loses output, identify the affected farm or connection as appropriate and state the total impact.
Can I combine several solar parks in one message?
For a reportable outage at one solar park, identify the affected park or unit. If a common event affects several parks that operate together as a virtual power plant (VPP), assess the event at the level at which it affects the market. ACER gives a specific example for VPP capacity in balancing markets. Depending on the setup, a qualifying event may be published under the Other market information schema, with the affected balancing product stated in the remarks.
ACER FAQ 4.1.18 on virtual power plants in balancing markets
Which event type applies to an electricity storage outage?
ACER gives an electricity storage outage as an example of Other unavailability in the Type of Event field when the other available categories do not describe the event accurately. Use this classification if the event qualifies as inside information and that option fits the outage.
Publish your UMMs with Webware
Contact us to set up your assets and publish inside information through our IIP. We support publication via the web portal, API and SFTP.
