SHORT TERM ADEQUACY FORECAST

We inform you that after the justified request of producer MYTILINEOS S.A., the annual maintenance of gas turbine No2 (GT2) of unit Alouminio, will be prolonged until 25/03/2024.

We inform you that after the justified request of producer MYTILINEOS S.A., the annual maintenance of gas turbine No2 (GT2) of unit Alouminio, will be conducted from 19/02/2024 to 14/03/2024.

We inform you that after the justified request of producer HERON S.A., the scheduled annual maintenance of thermal unit HERON S.A. for the period 13/10/2023 to 19/10/2023, is cancelled.

We inform you that after the justified request of producer PPC S.A., the annual maintenance of Gas Turbine 2 of thermal unit Lavrio 4, is extended till 04/06/2023.

We inform you that after the justified request of producer PPC S.A., maintenance works will be conducted in thermal unit Aliveri 5, from 03/06/2023 to 08/06/2023.

We inform you that after the justified request of producer HERON S.A. the Heron 1, Heron 2 and Heron 3 thermal units annual maintenance schedule is modified as follows:

• Heron 1: 23/09/2023 to 07/10/2023
• Heron 2: 20/03/2023 to 22/03/2023
• Heron 3: 23/03/2023 to 25/03/2023