According to the Resolution of the Italian Regulatory Authority for Energy, Networks and Environment (ARERA) No. 385/2025/R/EEL of 05/08/2025
Annex A.72: All solar power generation plants, both NEW and EXISTING, with a nominal capacity greater than 100 kW and connected to the Medium Voltage (MV) grid, must be upgraded to meet the new requirements and, in particular, be equipped with a Centralized Plant Controller (CCI).
For existing plants, the upgrade must be carried out within a defined timeframe, namely:
Plants with capacity between 100 – 500 kW and grid connection request submitted by 31/10/2025: upgrade to be completed by 31/03/2027;
Plants with capacity between 500 kW – 1 MW and grid connection request submitted by 06/08/2025: upgrade to be completed by 28/02/2027;
Plants with capacity greater than 1 MW and grid connection request submitted by 06/08/2025: upgrade to be completed by 28/02/2026.
By these deadlines, plant operators must notify compliance by means of:
Communication of completed upgrade;
Drafting of a new operating agreement;
Declaration pursuant to Law 445/2000, issued by a qualified technician (not employed by the producer), certifying that the plant has been upgraded in accordance with Annex A.72 (Resolution 385/2025/R/EEL) and CEI Standard 0-16.