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Athens, 16/05/2025
SIDC Intraday Auction: IDA Cancellation

Due to technical reasons or market issues, the auction IDA2 was cancelled.

Athens, 20/04/2025
SIDC Intraday Auction: IDA Cancellation

Due to technical reasons or market issues, the auction IDA1 was cancelled.

Athens, 18/03/2025
Technical Issue Resolved - Energy Derivatives

Please be informed that the technical issue occurred on 17.03.2025 has been resolved. The trading session of Financial Energy Market (Energy Derivatives) on Tuesday, March 18, will proceed as scheduled.

Athens, 17/03/2025
Technical Issue Notification - Energy Derivatives

Please be informed that due to a technical malfunction the HEnEx Trading System in Financial Energy Market (Energy Derivatives) will be suspended. A new announcement will be sent as soon as the problem is resolved.

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Historical Figures, can be found here.

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Call Auction on 11.05.2025 , 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]: 11.05.2025
Product Code: GRGD250511
Balancing Gas Quantity: 4.000.000 kWh
Side: Sell
Auction Date and Time: 11.05.2025 , 20:00 EET

The Order Book will remain open for thirty (30) minutes.

Call Auction on 05.05.2025 , 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]: 05.05.2025
Product Code: GRGD250505
Balancing Gas Quantity: 4.000.000 kWh
Side: Buy
Auction Date and Time: 05.05.2025 , 20:00 EET

The Order Book will remain open for thirty (30) minutes.

Call Auction on 23.04.2025 , 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]: 23.04.2025
Product Code: GRGD250423
Balancing Gas Quantity: 3.300.000 kWh
Side: Sell
Auction Date and Time: 23.04.2025 , 20:00 EET

The Order Book will remain open for thirty (30) minutes.

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Public Consultation of New Market Codes

The Hellenic Electricity Market Operator launches a Public Consultation on New Market Codes (Forward, Day-Ahead & Intraday).

Within the year 2004, RAE, LAGIE and ADMIE have assigned to ECCO International the study of the High Level Market Design of the Electricity Market in Greece, in order to fulfil the requirement of the European Target Model and to be able to couple with other European Electricity Markets according to the European Regulations and Directives. After the completion of this study, RAE launched the public consultation of this study in November 2014. During the public consultation, an open day presentation was held for the detailed presentation of the new model. The comments from the participants were evaluated by the consultant and sent to RAE.

In August 2016, the Law 4425/2016 came into force, which defines four (4) new Electricity Markets in order to replace the existing Day-Ahead Scheduling (DAS). LAGIE was set as Operator for the three of them (Forward, Day-Ahead and Intra-Day Market), while ADMIE was set as Operator for the fourth market (Balancing Market).

According to the provisions of Law 4425/2016 and the Guidelines published by RAE in 2017 (RAE Decision 67/2017) and with the support of the European Institution JRC (Joint Research Center), ECCO International was commissioned to develop the Detailed Level Market Design of the four (4) new electricity markets and the respective Codes of these new markets.

Upon completion of this project, LAGIE launches in public consultation the following texts, concerning the electricity markets within its responsibility:

A. Forward Market Code (in Greek and English),

B. The complementary text with the detailed level market design of the Forward Market (in English),

C. Day-Ahead Market Code (in Greek and English),

Note: The implementation of the Minimum Variable Cost as a rule for accepting the offers for selling energy by the conventional generating units will be examined in conjunction with the coupling of the Greek electricity market with the neighboring electricity markets.

D. The complementary text with the detailed level market design of the Day-Ahead Market (in English),

E. Intra-Day Market (in Greek and English),

F. The complementary text with the detailed level market design of the Day-Ahead Market (in English),

G. The Annex of the Codes with the Regulation and Participation Rules of the Forward Market, Day-Ahead Market and Intra-Day Market (in Greek and English),

H. The text of the Definitions (in Greek and English).

The above texts have been prepared under the current legal framework. Phase B of Public Consultation will be followed after the adaptation of these texts according to the upcoming legislative interventions in the context of implementing the draft law (Energy Exchange), whose public consultation have been completed

All stakeholders are encouraged to submit their opinions/views on the texts, by sending an e-mail to the address consultation_mr@lagie.gr using the phrase: "New Codes Consultation" as the subject line.

End of this public consultation: 22/01/2018

Consultation Paper on Intraday Coupling model for Italian Borders

On 14th August 2015, the Regulation (EU) 2015/1222 of 24th July 2015 establishing a guideline on Capacity Allocation and Congestion Management (hereinafter: “CACM”) has entered into force defining, among others, the requirements for the single intraday coupling which relies on:

  • a continuous energy trading mechanism accommodating the implicit allocation of the intraday cross-zonal capacity;
  • the development of a single methodology for pricing intraday cross-zonal capacity that shall reflect market congestion and be based on actual orders (“the Pricing of Intraday Capacity”).

Moreover, CACM regulation allows NEMOs and TSOs to complement the single intraday coupling with a complementary regional auction mechanism as foreseen in article 63, paragraph 2 of the CACM regulation, which states that "[…] Complementary regional intraday auctions may be implemented within or between bidding zones in addition to the single intraday coupling solution referred to in Article 51 […]".

This document is a common proposal by NEMOs/Power Exchanges and the Transmission System Operators of the Italian Borders to establish such regional intraday auctions. The Italian Borders in this context cover the electrical borders, for both power flow directions, between Italy and Slovenia, Italy and Switzerland, Italy and Austria, Italy and France, Italy and Greece. Furthermore, the borders between Italian internal bidding zones are involved in this proposal. Finally, the geographical scope of this project also includes the border between Austria and Slovenia.

The abovementioned parties intend to implement an Intraday Coupling Model in which the Target Model, based on a continuous trading mechanism, is complemented by a Complementary Regional Intraday Auction Mechanism.

To this end NEMOs/Power Exchanges and the Transmission System Operators have developed two options for implementation of the mechanism and welcome the comments of market participant on this consultation paper. Contributions can be sent by email to id_consultation@jao.eu until 13th January 2017.

All NEMOs Consultation

In accordance with Article 12 of the Commission Regulation (EU) No 2015/1222 of 24 July 2015 establishing a Guideline on Capacity Allocation and Congestion Management (hereafter referred to as CACM), the Nominated Electricity Market Operators (hereafter referred to as NEMOs)  held a public consultation on the following proposals for terms and conditions or methodologies that have been prepared, in cooperation with the relevant TSOs, in accordance with Article 9 of CACM:

-       A common proposal for the price coupling algorithm and for the continuous trading matching algorithm (Algorithm proposal), incorporating a common set of requirements for the price coupling algorithm (DA Algorithm) and the continuous trading matching algorithm (ID Algorithm), in accordance with Art. 37 (4) of CACM;

-       A joint proposal concerning products that can be taken into account in the single day-ahead and single intraday couplings, in accordance with Art. 40 (3) and Art. 53 (4) of CACM;

-       A proposal for a back-up methodology to comply with the obligations set out in Article 39 and 52 of CACM, in accordance with Art. 36 (3) of CACM;

-       A proposal on harmonized maximum and minimum clearing prices to be applied in all bidding zones which participate in single day-ahead and single intraday couplings, in accordance with Art. 41(1) and Art. 54 (1) of CACM.

The on-line consultation ran from 3 November 2016 to 2 December 2016. A consultation workshop for stakeholders took place on Monday 14 November, in cooperation with the TSOs. Please refer to the workshop presentation and Q&A document in attachment for more information.

The consultation period is over, it is no longer possible to provide feedback.

The stakeholders’ feedback received will be taken into consideration. In accordance with CACM (Art. 36(3), 37(5), 40(1), 41(1), 53(1) and 54(1)), by 18 months after the entry into force of this Regulation, i.e. by 14th February 2017, the proposals have to be submitted to the regulatory authorities for approval.

In case you would have any questions, feel free to contact us: consultation@nemo-committee.eu.

The methodologies have been prepared and approved by all NEMOs via the NEMO Committee, an organization of all NEMOs to discuss and facilitate the implementation of the CACM requirements, in cooperation with relevant TSOs in accordance with CACM.

The proposals, which were subject to consultation, are in the attachment:

·         Algorithm Proposal, incorporating the Day-Ahead and Intraday requirements

·         Products Proposal

·         Back-up Methodology Proposal

·         Harmonized Max-Min Price Proposal

Related documents:

·         Euphemia algorithm – public description

·         CACM Regulation

Consultation Workshop:

·         Presentation NEMO Committee

·         Presentation ENTSO-E

·         Workshop Q&A

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Exams/Seminars

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HEnEx's “Energy Trader Certification - Electricity (ETC-E)” Exam Invitation

HEnEx invites all interested parties to Energy Trader Certification - Electricity (ETC-E) Exam, which will take place on 20th March 2025. The registration form can be found here.

Registration for “HEnEx Energy Traders Seminar: Day-Ahead & Intra-Day Markets”

The Hellenic Energy Exchange invites all the interested parties to “HEnEx Energy Traders Seminar: Day-Ahead & Intra-Day Markets”, which will take place on 18th March 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 December 5, 2024.

Please find the registration form, here

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