Leading service provider for Transmission System Operators (TSOs) in the European electricity market.

Please be informed that that some emails sent from JAO, including accounting and invoice-related communications, may not be reaching recipients.

This issue has been identified as being related to OpenDNS categorising JAO domains as suspicious, which can result in JAO email IP addresses and domains being blocked or filtered by local email service providers.

To ensure uninterrupted receipt of JAO communications, we kindly request that you contact your IT or email service provider and whitelist JAO’s sending IP addresses and domain with immediate effect.

Failure to apply this whitelisting may lead to delays in receiving important communications, including invoices, which could impact timely settlement.

Should you require any technical details to support the whitelisting process, please do not hesitate to contact us.

Thank you for your cooperation and support.

Kind regards,

JAO Operations

Auction data is now available again on our website.

Thanks for your patience.

Dear Market Participants,

As communicated in the previous market message dated 15 January 2026 [Message board | JAO S.A. Leading service provider for TSOs], and in line with Article 24(5) of the Core DA CCM and Article 21(5) of the Core ID CCM, ČEPS would like to provide you with additional information regarding the upcoming change in the method used to determine the GLSK of the CZ bidding zone.

The new method will be applied in both the day-ahead (DA) and intraday (ID) timeframes. The go-live date for DA capacity calculation is planned to be 15 April 2026 for business day 17 April 2026. And subsequently, for the same business day, for the ID capacity calculation

Sincerely,
ČEPS

Please note that, due to a technical issue, auction data is currently not available on our website.

We kindly ask you to consult the auction tool directly for information on auctions that are currently running.

Thank you for your understanding.

Please be informed that the IBWT IDA3 data for the business day 09/02/2026, covering the Italy North CCR and the IBWT IDA Publication Tool, will be published with a delay.

Thank you for your understanding.

Kind regards,

JAO Operations

Please note that the (UA-HU) Daily auction for market period 09/02/2026 with the auction ID (UA-HU-D-DAILYPRODU-260209-01) has been delayed. Bid submission gate opens at 10:10.

Please note that the (UA-HU) Daily auction for market period 09/02/2026 with the auction ID (UA-HU-D-DAILYPRODU-260209-01) has been delayed. Bid submission gate opens a 09:50.