In June 2023, the PNIEC was renewed in light of the amendments to the Renewable Energy Directive (RED) through Directive No. 2018/2001 (RED II). In addition to what has already been explained in "CO2 and Energy Targets", the plan provides instructions to reach, in accordance with the European targets, 40.5% gross national energy consumption with renewable energy in electricity, heating, cooling and transportation by 2030.

To satisfy the 40.5% target as stated in the RED II, Legislative Decree No. 199/2021 was published. This decree applies to new buildings — those constructed or restructured as of June 2022 — and stipulates that renewable energy should satisfy at least 60% of hot water energy consumption and 60% of the sum of consumption for hot water, heating and cooling. For public buildings, the percentage has been increased by 5%.

In November 2023, Terna (an Italian electric transmission company) published a monthly report on the electric system, which provided data on the use of renewable energies, among other things. The report compares renewable energy production/consumption in November 2022 and 2023, highlighting an overall increase of renewable energy. Specifically, there was an increase (+86.6%) in hydroelectric-generated power, wind generation (+51.9%) and photovoltaic generation (+28.1%), and a slight increase in geothermal generation (+0.5%),

Lastly, on 20 November 2023, Directive No. 2413/2023 (RED III) entered into force, amending and updating the RED II. With particular reference to the renewable energy sector, the directive provides for a more ambitious European target of a 42.5% share of renewable energy with reference to the overall European final energy consumption. It encourages member states to allocate at least 5% of the capacity of new energy installations to innovative solutions.

The RED III also recognizes the vital role of buildings in the sustainable transition, highlighting that buildings have a great untapped potential for reducing greenhouse gas emissions. It also provides for binding targets concerning the share of renewable energy used for heating and cooling buildings. In particular, the RED III establishes an increase of 0.8% per year at national level and 1.1% from 2026 to 2030, with the ultimate target of reaching 49% of the renewable energy quota by 2030.