Grid Development Plan | Terna Driving Energy

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According to the European and national targets detailed in the 24SDD, renewable capacity is expected to increase by over 65 GW by 2030 compared to 2023. A further 20 GW can be considered for 2034, based on the targets set for 2040. Moreover, it is estimated that around 43 GW of RES will be integrated into the high-voltage grid across a ten-year time frame.

The last two years have also seen a growth in connection requests for consumption users. Particularly significant among these are the data centres, for which there were requests for connection in the amount of around 30 GW as of December 2024. They have a high energy demand because of their function, as a result of which new grid infrastructure, or the upgrading of existing elements, will be necessary for their connection.

The scenarios reveal the need for new storage capacity: by 2030, 71.5 GWh are required for the effective market integration of renewables, net of the existing electric pumping plants. This development is also supported by an innovative Mechanism for the Procurement of Electrical Storage Capacity (MACSE), which Terna will launch in 2025.

The development projects will allow the target capacities to be reached by 2030 and 2040, to enable efficient exchange between the market zones. Thanks to these interventions, an increase of around 7 GW is expected by 2030, rising to an overall exchange capacity of about 39 GW by 2040.

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Cross-zone interventions

Infrastructure that increases transport limits between market segments and optimises the energy exchange

Intrazonal interventions

Works to resolve local grid congestion within a market zone

RES and NON-RES connections

New Efficient Territorial Planning model

International interconnections

Planning interventions to strengthen energy security

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Interconnection

Undersea HVDC

Alternating current/Direct current (AC/DC) modernisation

Alternating current (AC) modernisation

380kV

Intervention which has entered in operation in relation to the reference architecture

+ ~ 7 GW of exchange capacity

Interconnection

Undersea HVDC

Alternating current/Direct current (AC/DC) modernisation

Alternating current (AC) modernisation

380kV

Intervention which has entered in operation in relation to the reference architecture

+ ~ 8 GW of exchange capacity

Interconnection

Undersea HVDC

Alternating current/Direct current (AC/DC) modernisation

Alternating current (AC) modernisation

380kV

Intervention which has entered in operation in relation to the reference architecture

+ ~ 8 GW of exchange capacity

Map-of-interconnections-in-Italy-for-the-post-2034-period

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Under construction/authorised

In planning/consultation

Under authorisation/consultation

Under study

30 already in operation

Map of Italy's new interconnections with foreign countries: connections with Austria, Slovenia, Switzerland, Corsica, Greece and Montenegro. Northwest border with Switzerland and Germany, Northeast with Austria, and Balkan with Albania.

~ 12 GW nominal capacity

Map with Merchant Lines between Italy and Europe (Switzerland, France, Austria, Slovenia, Spain, Malta) and between Italy and North Africa (Algeria, Tunisia, Egypt).

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Investments for more than €23 billion

In the 2025 - 2034 ten-year period

Greater RES integration

At least +65GW by 2030 +94GW by 2035¹

Reduced CO2 emissions

Up to 2,000 kt/year by 2030 and almost 12,100 kt/year by 2040

Higher transport capacity

From the current 16 GW to 39 GW

Higher cross-border capacity

About 40% more than current values²

Losses prevented

About 0.4-1 TWh/year

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Download the Terna app!

The 2025 Development Plan is now digital, thanks to a dedicated section on the Terna app.
The main projects and works are available on your smartphone with fast and accessible multimedia content.

Renewable energy sources (res)

Data centres and other connections

Storage

Cross-zone exchange capacity

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