REGULATORY UPDATE: CCI requirement for photovoltaic systems ≥100 kW on MV
With ARERA Resolution 385/2025/R/EEL, published on 5 August 2025, a new obligation comes into force affecting all photovoltaic systems with nominal power ≥100 kW connected to Medium Voltage (MV), whether existing or new.
What does it involve?
The standard requires the installation of the Central System Controller (CSC), compliant with CEI Standard 0-16, with PF2 functionality active. This device allows active power limitation under external Distributor (DSO) control, contributing to the stability and security of the National Electricity System (NES).
Systems affected?
- Existing systems ≥100 kW to be connected to MV
- New systems ≥100 kW to be connected to MV
- Systems >1 MW already equipped with CCI but without PF2 functionality
Dates to be respected
| Power range |
Adaptation deadline |
| ≥ 1 MW |
28 febbraio 2026 |
| 500 kW – 1 MW |
28 febbraio 2027 |
| 100 – 500 kW |
31 marzo 2027 |
Caution: Failure to comply will result in suspension of GSE incentives, non-recognition of energy and possible disconnection from the grid.
Economic contributions
ARERA has provided for decreasing flat-rate contributions to encourage compliance:
- Up to € 10,000 for systems between 500 kW and 1 MW (by 28/02/2026)
- Up to € 7,500 for systems between 100 and 500 kW (by 31/03/2026)
Protesa’s turnkey solution
As an EPC Contractor specialising in photovoltaic systems, Protesa offers comprehensive support in addressing the adaptation required by ARERA Resolution 385/2025.
Thanks to its experience and technical expertise, Protesa supports customers on the path to regulatory compliance, making the most of the opportunities offered by economic contributions while guaranteeing integrated and reliable solutions.
Contact us now for a dedicated consultation and to assess the status of your system.