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Electricity Markets
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Electricity Markets Messages
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Athens, 31/10/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA1
with delivery date 01-11-2025 was cancelled.
Athens, 15/07/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA2
with delivery date 16-07-2025 was cancelled.
Athens, 02/06/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA1
with delivery date 03-06-2025 was cancelled.
Athens, 16/05/2025
SIDC Intraday Auction: IDA Cancellation
Due to technical reasons or market issues, the auction IDA2
with delivery date 17-05-2025 was cancelled.
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Home_Gas_Markets_Title
Natural Gas Trading Platform
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Home_Market_Messages_GAS
Natural Gas Trading Platform Messages
Asset Publisher
Call Auction on 05.11.2025 , 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]: | 05.11.2025 |
| Product Code: | GRGD251105 |
| Balancing Gas Quantity: | 2.500.000 kWh |
| Side: | Buy |
| Auction Date and Time: | 05.11.2025 , 21:00 EET |
The Order Book will remain open for thirty (30) minutes.
Update - Call Auction on 20.10.2025 , 20:00 EET
HEnEx would like to inform Market Participants about the Auction of Natural Gas Trading Platform with the following updated details:
| Delivery Date [Gas Day]: | 21.10.2025 |
| Product Code: | GRGD251021 |
| Balancing Gas Quantity: | 4.290.000 kWh |
| Side: | Buy |
| Auction Date and Time: | 20.10.2025 , 20:00 EET |
The Order Book will remain open for thirty (30) minutes.
Call Auction on 21.10.2025 , 20:00 EET
HEnEx would like to inform Market Participants about the Auction of Natural Gas Trading Platform with the following details:
| Delivery Date [Gas Day]: | 21.10.2025 |
| Product Code: | GRGD251021 |
| Balancing Gas Quantity: | 4.290.000 kWh |
| Side: | Buy |
| Auction Date and Time: | 21.10.2025 , 20:00 EET |
The Order Book will remain open for thirty (30) minutes.
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Home_News_Announcements
News - Announcements
Asset Publisher
Clearing Fund amount for Day-Ahead & Intraday Markets
EnExClear, as the Clearing Fund Administrator, in accordance with Part 8, Section 2.27, of Clearing Rulebook for Transactions on Day-Ahead & Intraday Markets, announces that the Day-Ahead & Intraday Markets Clearing Fund is set at € 8,803,429.35 for the calculation period October 2025.
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 € 1,337,985.65 for the calculation period October 2025.
Access of Independent Software Vendors (ISVs) to HEnEx’s ETSS Test Environment
HEnEx hereby grants Independent Software Vendors (ISVs) the ability to access the ETSS test environment using the API of an existing Market Participant for the development and configuration of algorithmic trading solutions.
Press release can be found here
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Exams/Seminars
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Spot Market Business Model & Systems
The Hellenic Energy Exchange organizes at its premises on Wednesday 24th of July 2019 a workshop for "Spot Market Business Model & Systems".
The workshop program and participation details can be found here.
Presentations:
DAM & IDM Membership & Start-Up
Clearing & Settlement Business Processes
Order types in the new HEnEx DAM & IDM auctions
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Detailed information about the cookies we use, can be found in our cookies policy.