Useful information

The works, once permission to start work has been communicated by the competent authority, must be started after classification in the concession list (with the exception of certain cases as defined by the Decree). The appropriate construction and operation permits for the system are requested in order to participate in the procedure, including any applicable licences, the quote for connecting to the electricity network that has been definitively accepted and the registration of the system on the GAUDI’ system validated by the network operator.

The procedures for applications to the registers are also open to aggregates – consisting of two or more systems in the same incentive group – with a unit power equal to or greater than 20 kW, as long as the aggregate’s overall power is not over 1 MW. The same applies to the auction procedures, but with a unit power of between 20 and 500 kW, while the aggregate’s overall power must be greater than or equal to 1 MW.

The Energy Services Operator (Gestore dei Servizi Energetici - GSE) shall publish the calls for applications to the register and auction procedures in accordance with the deadlines laid down by the Decree and in accordance with the following terms:

a) The period allowed for submitting applications is 30 days from the date of the publication of the call for applications;

b) The ranking is created and published on the GSE’s web site within 90 days of the application deadline.

The calls for applications are organised into four groups; for photovoltaic systems in particular, the groups are as follows:

Group A:

  • Wind turbines;
  • Photovoltaic systems.

GROUP A-2 (applies only to the Registers):

Photovoltaic systems where photovoltaic modules are installed to replace the roofs of industrial and rural buildings from which Eternit or asbestos have been entirely removed. The surface area of the modules cannot exceed the surface area of the roof or covering that has been removed.

The following table specifies the power quotas (Register) to be allocated for groups A and A2 (as regards photovoltaic solutions). 
































The GSE shall create the ranking and publish it on its web site according to the following priority criteria, until the power quotas have been fully assigned.

Priority criteria for Registers (for PV systems)

Group A

(new wind turbines + PV)


1.    Systems installed on closed and remediated landfill sites, exhausted quarries or on areas, including sites of national interest, where a certification for completed remediation has been issued;

2.    Systems connected to the electricity network and with charging stations with total power ≥ 15% of the system’s power and where the power of each charging station is no lower than 15 kW;   

3.    System aggregates with overall power < 1 MW, which offered the same percentage reduction for all systems;

4.    Greater percentage reduction offered on the reference tariff up to a maximum of 30% (possible);

5.    Lower due tariff, taking the reduction offered into consideration;

6.    Having completed the application to participate in the procedure at an earlier date.

Group A-2 (new PV systems on roofs after asbestos removal)

1.    Systems installed on schools, hospitals, other public buildings;

2.    Systems connected to the electricity network and with charging stations with total power ≥ 15% of the system’s power and where the power of each charging station is no lower than 15 kW;

3.    System aggregates with total power < 1 MW, which offered the same percentage reduction for all systems;

4.    Greater percentage reduction offered on the reference tariff up to a maximum of 30% (possible);

5.    Lower due tariff, taking the reduction offered into consideration;

6.    Having completed the application to participate in the procedure at an earlier date.


The systems classified in a sufficiently advanced position in the registers must become operational within the deadlines set forth by the Decree, in particular:

  • 19 months for solar photovoltaic systems in Group A;
  • 24 months for solar photovoltaic systems in Group A-2;
  • For systems owned by the public administrations, the deadlines are extended by 6 months.

Failing to respect these deadlines determines the tariff shall be reduced by 0.5% for every month of delay up to a total of 6 months. Following this maximum period, the system shall lose the right to the incentive and, should it be approved again having participated in subsequent procedures, the due tariff shall be reduced by 5%.

Any systems on the register with a power exceeding 100 kW must pay a provisional and final guarantee deposit in accordance with the terms set out by artt. 14 and 15 of the Decree. For such purpose, the percentage amount of the final deposit is 2% of the investment cost estimated for the installation of the system; for photovoltaic systems the amount is fixed at € 900 per kW.

The reference tariffs for photovoltaic systems are as follows:

System power (kWp)

Tariff (€/MWh)








The offered tariff is calculated by taking the reference tariff and applying any percentage reductions declared by the producer within the registers or auctions procedures (on a voluntary basis). As part of the application to participate in the registers, the operator may specify a percentage reduction of the reference tariff, which cannot exceed 30%.

The tariffs are determined for the entire useful life of the system, which for photovoltaic systems is 20 years by default.

The due tariff may be reduced if the conditions to justify a reduction as laid down by the Decree are met (e.g. not respecting the deadlines for becoming operational, etc.).

The amounts provided in table 1.1 shall be reduced, with effect from 1 January 2021, by 2% for systems in group B and by 5% for systems in group A.

For photovoltaic systems installed to replace Eternit or asbestos roofs (group A-2), the due tariff is increased by a premium of € 12.00 per MWh, applied to the total amount of energy produced.

For producers with systems of up to 100 kW on buildings – on the quota of net production consumed on site – a premium (which can be cumulated with the € 12 per MWh premium) of € 10 per MWh is allocated if the annual self-consumed power is greater than 40% of the system’s net production.

Following their acceptance, the producer shall sign with the GSE a two-way contract for difference (CFD) for all the energy to be fed back into the grid, with a strike price equal to the tariff awarded, that is:

  • The energy remains available to the producer, who sells it on the market at the regional price;
  • Subsequently, the GSE pays the producer or receives from the producer the difference between the regional price and the awarded tariff (strike price).

For systems with power up to 250 kW it is possible to choose the all-inclusive tariff. In this case the producer only has a single counterparty, the GSE, who receives all the electricity fed back into the network by the producer and pays the awarded tariff.

The producers who are awarded incentives may ask the GSE to switch from one mechanism to the other (all-inclusive tariff to CFD and vice versa) no more than twice during the entire incentive period.

The Electricity Market Operator (Gestore del Mercato Elettrico - GME) shall initiate a public consultation to set out the appropriate legislation for creating a market platform for long-term renewable energy negotiations.  

The Authority shall, if necessary, implement regulations to remove any regulatory barriers to financing new renewable energy initiatives through long-term contracts. Any participation in the platform shall be on a voluntary basis and shall not prejudice the right to also establish Power Purchase Agreements (PPAs) outside the framework set up by the Italian Regulatory Authority for Energy, Networks and Environment (ARERA).

Systems which qualify to access the platform may not participate in the application procedures for the registers and auctions. The GSE shall update the qualification procedure for renewable systems and the procedure for issuing Guarantees of Origin, also for the purpose of allowing direct cancellation by final users.

Until the platform is fully operational, the GSE shall make the details of the projects available on its web site and facilitate the matching of demand and supply.

For further details, please refer directly to the original Decree.

Enel X and its team of experts can assist you in managing the incentive request procedure by preparing the necessary documentation.

Furthermore, once the funding has been granted, Enel X will install the photovoltaic system and handle, on behalf of the Client and in accordance with the tariffs laid down by the FER, the transfer of surplus energy with the GSE. If the photovoltaic system has a power in excess of 250 MW, surplus energy will be managed through our surplus energy quantification service, which ensures that Clients optimise their revenue via an end-to-end approach for services related to the sale of the electricity on the energy markets, without having to become a market operator.

The content of this page is provided by Enel X Italia S.p.A. (hereinafter, “Enel X Italia”) for information purposes only and has no official significance. Enel X Italia expressly disclaims any liability relating to the accuracy, completeness or adequacy of the aforementioned content. No liability shall be ascribed to Enel X Italia for any direct and/or indirect loss incurred as a result of or connected to the use or to the provision of the information contained on this page. For any specific or detailed information, please consult the official documents issued by the competent authorities.