Methodologies and Technical Decisions

The Technical Decision "Procedures of registration with the HETS Operator Registry" provides detailed description of application, submission and registration procedures in the HTS Operator Registries. The procedures are analytically presented in section Registration Procedures.  

The Technical Decision is available in English. 

The Technical Decision "Dispatch Instructions" includes all relevant procedures for issuing and sending Dispatch Instructions. The Technical Decision is available in Greek.

The Technical Decision "Manual FRR" includes details on the implementation of the manual FRR (mFRR) process. The Technical Decision is available in Greek. Additional information is included on a Technical Manual, also available in Greek.

The Technical Decision "Automatic FRR" includes details on the implementation of the automatic FRR (aFRR) process. The Technical Decision is available in Greek. Additional information is included on a Technical Manual, also available in Greek.

The Technical Decision "Balancing Market Settlement" includes details and examples of calculations regarding the clearing of the Balancing Energy Market, the Balancing Capacity Market and the Imbalances. The Technical Decision is available in Greek.

The Technical Decision 'Integrated Scheduling Process' includes details on the implementation of the Integrated Scheduling Process (ISP). The ISP is a process carried out by TSOs that use Central Dispatch Systems. The process aims at covering the forecasted generation/demand imbalances and procuring the required reserves. Consequently, the ISP results involve:

• procurement of the Balancing Capacity needed to cover the forecasted reserves requirement for FCR and FRR (aFRR and mFRR),
• scheduling of the commitment of BSEs in a way that meets the constraints of the HETS and the BSEs, and
• procurement of Balancing Energy needed to cover the forecasted generation/demand imbalances and provision for an indicative production schedule of the BSEs.

The ISP is solved as a co-optimization problem taking into account the Balancing Energy and Balancing Capacity Offers of the BSEs as well as their respective constraints, the HETS constraints and the HETS Operator needs, in order to minimize the cost of Balancing Energy and Balancing Capacity procurement

The Technical Decision "Technical limits on bidding and clearing prices" defines the numerical values of the Minimum and Maximum Prices of Balancing Capacity and Balancing Energy Offers, which are imposed for technical reasons. The Technical Decision is available in English.

Α. Technical Limits for bidding prices and clearing prices for Balancing Energy

1^st Period:           From the launch of the new markets until the introduction of Complementary Regional Intraday Auctions (CRIDAs).

2^nd Period:          From the implementation of Complementary Regional Intraday Auctions (CRIDAs) until inclusion of the IPTO in one of the European platforms, MARI or PICASSO.

3^rd Period:           From the date of the integration of the IPTO in one of the European platforms (MARI or PICASSO) and up to a maximum of 48 months from the deadline for the implementation of the European MARI and PICASSO platforms, as defined in Articles 20 and 21 of the EBGL.

4^th Period:           48 months after the deadline for the implementation of the European MARI and PICASSO platforms.

Β. Technical Limits for bidding prices and clearing prices for Balancing Capacity

1^st Period:           From the launch of the new Markets until the implementation of Continuous Intra-Day Trading (XBID).

2^nd Period:          From the implementation of Continuous Intra-Day Trading (XBID) onwards.

The Technical Decision Procedure and Prequalification Tests of Balancing Service Providers describes the process of all necessary Prequalification Tests Balancing Service providers and Entities should undertake for their participation in the Balancing Market.

Interested parties that wish to register in the HETS Operator Registry shall submit a registration fee, as described in section Registration Procedures. The Registration fee is determined by decision of RAE.

Registration Fee in HETS Operator Registry
One-off charge for Balancing Service Providers or/and Balance Responsible Parties: 2.000€
One-off charge for Balancing Market Generating Units: 2.500€
*The registration fee is paid only once, in case the interested party bears both the attribute of a Balancing Service Provider and Balance Responsible Party.

For the calculation of the Instructed Energy, a tolerance limit is set per category of Balancing Service Entity at 2%. The Decision of RAE is available in Greek.

The Balancing Energy Deficit Premium price in €/MWh is determined by RAE, following a proposal by IPTO. RAE's Decision No 1226/2020 (GG Β' 4033/21.09.2020) is available in Greek.

If during an Imbalance Settlement Period energy from Contracted Units or Supplementary Energy from Emergency Imports was injected, or Load Cuts were performed, the upward Balancing Energy Price for manual FRR may be increased at least up to the level of  € 2.100 /MWh for the specific Imbalance Settlement Period. In the event that the upward Balancing Energy Price for manual FRR receives a value greater than € 2,100 / MWh, then the value of the Balancing Energy Deficit Premium price is zero (0).

The Safety Maximum Reservoir Level is the the maximum level per reservoir, above which the Dispatchable Hydro Generating Units connected to the Reservoir may submit mandatory hydro injection declarations to avoid overflow.

The Safety Minimum Reservoir Level is the minimum level per reservoir, above which the Dispatchable Hydro Generating Units connected to the Reservoir may submit declarations of maximum daily energy injection constraint. 

The height of the Safety Maximum Reservoir Level and the Safety Minimum Reservoir Level are determined for each Dispatchable hydro Generating Unit by RAE's Decision 1392/2020 (GG Β' 4703/23.10.2020).

The expenditure related to the obligations of the HETS Operator in accordance with the Balancing Market Rulebook, which are considered reasonable, efficient and proportionate, as well as their rate of return, shall be recovered by the Operator through a Balancing Market Fee payable by every Balancing Service Provider and Balance Responsible Party. 

The Balancing Market Fee consists of two components, the Imbalance Component and the Energy component, into which the Required Revenue is distributed as follows: 
a) 20% of the Required Revenues corresponds to the Imbalance Component, and
b) 80% of the Required Revenues corresponds to the Energy Component.

The unitary charges of the above-mentioned components are determined every year, upon proposal by the HETS Operator and approval by RAE. 

The approved unitary charges of the Balancing MArket Fee Components are presented in the table below.