ISP Balancing Energy Offers correspond to an intention to provide upward or downward Balancing Energy in relation to the Market Schedule of the respective Balancing Service Entity.

An upward ISP Balancing Energy Offer is:

a) the possibility of increase in the production level of the Dispatchable Generating Units and Dispatchable RES Units Portfolios in comparison to their Market Schedule,

b) the possibility of decrease in the consumption level of Dispatchable Load Portfolios in comparison to their Market Schedule.

A downward ISP Balancing Energy Offer is:

a) the possibility of decrease in the production level of the Dispatchable Generating Units and Dispatchable RES Units Portfolios in comparison to their Market Schedule,

b) the possibility of increase in the consumption level of Dispatchable Load Portfolios in comparison to their Market Schedule.

The Balancing Service Providers representing Dispatchable Generating Units registered with the Balancing Market Generating Units Registry are obliged to submit to the ISP:

a) an upward ISP Balancing Energy Offer per Balancing Service Entity for each Dispatch Period of the Dispatch Day, for a total upward Balancing Energy quantity equal to the Maximum Net Capacity of the Balancing Service Entity as set out in its Registered Characteristics and

b) a downward ISP Balancing Energy Offer per Balancing Service Entity for each Dispatch Period of the Dispatch Day, for a total downward Balancing Energy quantity equal to the Maximum Net Capacity of the Balancing Service Entity as set out in its Registered Characteristics.

The Producers representing pumped storage Dispatchable hydro Generating Units are obliged to submit separate Balancing Energy Offers for generation and pumping. The submission of Balancing Energy Offers for the pumping operation is obligatory. In the event of failure to submit Balancing Energy Offers for pumping operations for a Dispatch Day or certain Dispatch Periods of the Dispatch Day, the Balancing Market System shall automatically generate Balancing Energy Offers for the pumping operation for the corresponding Balancing Service Entity for all Dispatch Periods of the Dispatch Day or for Dispatch Periods of the Dispatch Day for which no offer was submitted, by setting offer quantities equal to the Maximum Net Power of the Balancing Service Entity, with offer prices equal to the Maximum and Minimum Balancing Energy Offer Limits, as set out in the Technical Decision ‘Technical limits on bidding and clearing prices in the Balancing Market’, subject to the provisions of Article 27.2 this Rulebook. The Offers which are created automatically by the Balancing Market System shall be considered as having been submitted by the Participant and shall produce all the results provided for in this Rulebook, as if these Offers had been submitted by the Participant.

The Producers representing Dispatchable Multi-Shaft Combined Cycle Generating Units are obliged to submit separate Balancing Energy Offers for each configuration of their Dispatchable Generating Units.

The Balancing Service Providers representing Dispatchable RES Units Portfolios are entitled to submit to the ISP:

a) an upward ISP Balancing Energy Offer per Balancing Service Entity for each Dispatch Period of the Dispatch Day, for a total upward Balancing Energy quantity which shall be no higher than the dispatchable capacity, and

b) a downward ISP Balancing Energy Offer per Balancing Service Entity for each Dispatch Period of the Dispatch Day, for a total downward Balancing Energy quantity which shall be no higher than the dispatchable capacity of the Balancing Service Entity as set out in its Registered Characteristics.

The Balancing Service Providers representing Dispatchable Load Portfolios are entitled to submit to the ISP:

a) μια ανοδική Προσφορά Ενέργειας Εξισορρόπησης ΔΕΠ ανά Οντότητα Υπηρεσιών Εξισορρόπησης για κάθε Περίοδο Κατανομής της Ημέρας Κατανομής για συνολική ανοδική ποσότητα Ενέργειας Εξισορρόπησης κατά μέγιστο ίση με την κατανεμόμενη ισχύ, και

b) a downward ISP Balancing Energy Offer per Balancing Service Entity for each Dispatch Period of the Dispatch Day, for a total downward Balancing Energy quantity which shall be no higher than the dispatchable capacity.

Balancing Service Providers representing Dispatchable RES Units Portfolios or Dispatchable Load Portfolios, with the exception of Dispatchable Hydroelectric Generation Units with pumped storage capacity are obliged to submit upward and downward Balancing Energy Offers to the ISP, provided that they also submit the corresponding Balancing Capacity Offers.

The offers submitted to the ISP shall be taken into consideration for the execution of ISP1, ISP2 and ISP3, as well as for any ad-hoc ISP. The re-submission of Offers is not allowed after the Expiration of the Deadline for the Submission of ISP Offers.

Balancing Energy Offers submitted to the ISP are used in both the mFRR and aFRR Processes as set out in Article 15.1. 

Details of how to submit Balancing Energy Offers to ISP are described in the Technical Decision “Integrated Scheduling Process”.

The upward and downward ISP Balancing Energy Offers for each Balancing Service Entity and for each Dispatch Period shall consist of individual steps. Each step shall contain the price of the Balancing Energy Offer in €/MW, accurate to two (2) decimal places, and a quantity representing the generation/load level of the Balancing Service Entity in MW, accurate to one (1) decimal place. The minimum quantity of the Offer shall be equal to one (1) MW.

The upward ISP Balancing Energy Offer shall include between one (1) and ten (10) steps. The price of the ISP Balancing Energy Offer for each successive step may not be reduced in relation to the price of the Offer for the preceding step. For the Balancing Service Entities for which a Technically Minimum Generation is applied, the quantity of the first step of the upward ISP Balancing Energy Offer in MW shall be equal to, at least, the Technically Minimum Generation.

The downward ISP Balancing Energy Offer shall include between one (1) and ten (10) steps. The price of the ISP Balancing Energy Offer for each successive step may not be increased in relation to the price of the Offer for the preceding step. For the Balancing Service Entities for which a Technically Minimum Generation is applied, the quantity of the last step of the downward ISP Balancing Energy Offer in MW shall be equal to, at least, the Technically Minimum Generation.

ISP Balancing Energy Offer prices must be within the Balancing Energy Offer Maximum Price and the Balancing Energy Offer Minimum Price, as in force for the Dispatch Period to which the Balancing Energy Offer corresponds.

The numerical values of the Balancing Energy Offer Minimum Price and the Balancing Energy Offer Maximum Price are specified in the Technical Decision “Technical limits on bidding and clearing prices in the Balancing Market”. This Technical Decision shall be issued at least two (2) months prior to the date of enforcement of the new values of the above limits.

In stepped ISP Balancing Energy Offers for mFRR of Dispatchable Load Portfolios, Balancing Service Providers shall have the right to include a specific quantity per step, which is offered as a single set and can therefore either be accepted in its entirety or rejected in its entirety by the ISP. The above right is granted to Balancing Service Providers after approval by the HETS Operator following the submission of justification and technical documentation by the Balancing Service Providers.

In the event that an ISP Balancing Energy Offer was not submitted in accordance with Article 12.1 and Article 12.2, the ISP Balancing Energy Offer for all Dispatch Periods of the Dispatch Day shall be automatically rejected by the Balancing Market System. In case of rejection, the grounds for the rejection shall be notified to the Balancing Service Providers through the Balancing Market System. Balancing Service Providers may re-submit an ISP Balancing Energy Offer before the Deadline for Submission of ISP Offers. If the ISP Balancing Energy Offer is submitted in accordance with Article 12.1 and Article 12.2, the ISP Balancing Energy shall be validated. Only the last validated ISP Balancing Energy Offers shall be considered for the execution of the ISP.

After the Deadline for Submission of Offers to the ISP, Balancing Energy Offers may not be modified and shall be used as-is for resolution of the Integrated Scheduling Processes of ISP2, and ISP3.

In the event of non-submission of ISP Balancing Energy Offers for a Dispatch Day by a Balancing Service Provider who is obliged to submit a Balancing Energy Offer in accordance with Article 12.1, the Balancing Market System shall automatically create ISP Balancing Energy Offers for the respective Dispatchable Generating Unit, and for all Dispatch Periods of the Dispatch Day, setting bidding prices equal to the corresponding prices of the last validated ISP Balancing Energy Offer of the Balancing Service Entity on the previous day. The Offers which are created automatically by the Balancing Market System shall be considered as having been submitted by the Participant and shall produce all the results provided for in this Rulebook, as if these Offers had been submitted by the Participant.