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Electricity Markets
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Athens, 30/12/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA1
with delivery date 31-12-2025 was cancelled.
Athens, 09/12/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA1
with delivery date 10-12-2025 was cancelled.
Athens, 29/11/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA1
with delivery date 30-11-2025 was cancelled.
Athens, 24/11/2025
Waiver for Market Maker obligations
HEnEx informs the Members of the Derivatives Market that, following a relevant request by the Market Maker PPC S.A. due to technical issues, it is lifting the obligations for the provision of order pairs for all Series for which there was an obligation to provide binding bid–ask quotes for the Trading Day 24/11/2025.
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Natural Gas Trading Platform
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Natural Gas Trading Platform Messages
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Call Auction on 14.01.2026 , 22:00 EET
HEnEx would like to inform Market Participants about the Auction of Natural Gas Trading Platform with the following details:
| Delivery Date [Gas Day]: | 14.01.2026 |
| Product Code: | GRGD260114 |
| Balancing Gas Quantity: | 3.000.000 kWh |
| Side: | Buy |
| Auction Date and Time: | 14.01.2026 , 22:00 EET |
The Order Book will remain open for thirty (30) minutes.
Call Auction on 13.01.2026 , 21:00 EET
HEnEx would like to inform Market Participants about the Auction of Natural Gas Trading Platform with the following details:
| Delivery Date [Gas Day]: | 13.01.2026 |
| Product Code: | GRGD260113 |
| Balancing Gas Quantity: | 3.000.000 kWh |
| Side: | Buy |
| Auction Date and Time: | 13.01.2026 , 21:00 EET |
The Order Book will remain open for thirty (30) minutes.
Call Auction on 07.01.2026 , 19:00 EET
HEnEx would like to inform Market Participants about the Auction of Natural Gas Trading Platform with the following details:
| Delivery Date [Gas Day]: | 07.01.2026 |
| Product Code: | GRGD260107 |
| Balancing Gas Quantity: | 2.200.000 kWh |
| Side: | Sell |
| Auction Date and Time: | 07.01.2026 , 19:00 EET |
The Order Book will remain open for thirty (30) minutes.
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News - Announcements
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Clearing Fund amount for HEnEx's Natural Gas Trading Platform
EnExClear, as the Clearing Fund Administrator, in accordance with Part 8, Section 2.27, of Clearing Rulebook for Transactions on HEnEx’s Natural Gas Trading Platform, announces that the Natural Gas Trading Platform Clearing Fund is set at € 2,503,435.81 for the calculation period June 2025.
New Functionalities in the Natural Gas Trading Platform (NGTP)
Following the announcement by RAEWW, HEnEx announces the integration of two new functionalities into the Natural Gas Trading Platform (NGTP). Specifically:
- Introduction of a Special Participant in the NGTP
A new category of Participant is now eligible to participate in the NGTP. This Participant is not a Transmission User but is contractually linked with a Transmission User. - Procurement of Offsetting Gas by DESFA via the NGTP
The functionality enabling the procurement of offsetting gas for the National Natural Gas Transmission System, as well as for the operational needs of the Liquefied Natural Gas (LNG) Facility, by the Hellenic Gas Transmission System Operator (DESFA) through the NGTP, is now activated. This new feature serves the need for more efficient coverage of the System’s operational gas requirements through the organized market.
Registration for “HEnEx Energy Derivatives Traders Seminar: Derivatives Market”
The Hellenic Energy Exchange invites all the interested parties to “HEnEx Energy Derivatives Traders Seminar: Derivatives Market”, which will take place on 17th June 2025. The registration form can be found here.
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Exams/Seminars
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Energy Spot Markets Clearing & Risk Management Seminar
EnExClear invites all interested parties to “Energy Spot Markets Clearing, Risk Management Seminar”, which will take place on 19th November 2025.
The registration form can be found here.
EnExClear, Energy Clearer Certificate (ECC) Exam Invitation
The EnExClear S.A. invites all the interested parties to “Energy Clearer Certificate (ECC) Exam”, which will take place on 26th November 2025.
Please find the registration form, here.
HEnEx's "Energy Trader Certification - Gas (ETC-G)" Exam Invitation
HEnEx invites all the interested parties to “Energy Trader Certification - Gas (ETC-G) Exam”, which will take place on 18th September 2025. The registration form can be found here.
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