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”.