Balancing Service Providers, who have a corresponding obligation pursuant to Article 10.1 of this Rulebook, shall submit a Declaration of Total or Partial Non-Availability for each Balancing Service Entity directly to the HETS Operator for each Dispatch Day during which there is reduced Available Capacity of the Balancing Service Entity compared to that arising out of the Declared Characteristics. Reduced Available Capacity may occur in case of failure for technical reasons, related to the operation or the safety of its facilities, or for other reasons.

The Balancing Service Providers submit the initial Non-Availability Declarations for the Balancing Service Entities they represent for the Dispatch day, D until 09:00 EET f Dispatch Day, D-1 and the updated Non-Availability Declarations immediately after a reduction in the available capacity entries into force.

The Producers representing Dispatchable Units with Alternative Fuel are required to submit separate non-Availability Declarations for the operation of their Dispatchable Generating Units both with the primary and the alternative fuel.

The Producers representing Dispatchable Multi-Shaft Combined Cycle Generating Units are obliged to submit separate non-Availability Declarations for each configuration of their Dispatchable Generating Units.

The Total or Partial non-Availability Declarations shall include at least the following:

a) the Dispatch Periods within a Dispatch Day or the Dispatch Days when non-availability is expected to occur,

b) the non-Available Capacity for each Dispatch Period of the Dispatch Day or the Dispatch Days, and

c) detailed technical description of the reasons for the total or partial non-availability.

Without prejudice to the provisions of Article 10.8 hereof, non-Availability Declarations shall remain in effect for all the Dispatch Periods to which they refer, unless they are revoked or amended by the Balancing Service Providers that submitted them.