In implementation of Article 40 of Law No. 5151/2024—which introduced Article 11C, titled "Addition of Storage Units to Existing and New Renewable Energy Sources (RES) Stations," into Law No. 4685/2020—the Network Operator informs interested parties that it is now accepting applications for the addition of storage systems to both existing and new RES stations, in accordance with paragraphs 1 and 2 of the newly added article. Furthermore, the Network Operator is also accepting applications for the supply of electricity from renewable energy sources via an independent converter for the Interconnected Grid, as provided under Article 11C of Law No. 4685/2020.

Connection requests shall be submitted exclusively via the online platform which requires login via GIS using the TAXISnet credentials of the requesting entity.

The following must be submitted as part of the connection request:

1. A) Supporting documents
2. B) A Letter of guarantee in accordance with the provisions outlined below:

• A separate letter of guarantee is required for the addition of a storage system with an independent converter to a RES station. The guarantee amount will be calculated in accordance with paragraph 3 of Article 6 of Law No. 4951/2022, based on the nominal capacity of the independent converter in kVA (instead of kW as specified in paragraph 3 of Article 6), which shall be considered the maximum injection capacity of the storage system.
• In the case of adding a battery with an independent converter to a RES station, Article 89A of Law No. 4951/2022, as in force, shall apply regarding the reduction of guarantee amounts for RES station owners.

1. C) Annex III

• For RES plants that are converted into plants under paragraph 11A of Article 10 of Law No. 4685/2020, the fields "Maximum Injection Capacity (kW)" and "Maximum Absorption Capacity (kW)" in Table 1.1 of Annex III are not required to be filled out.