Progress Report

The List of Priority Interconnection Projects was one of the main outcomes of the third Three Seas Initiative Summit held in Bucharest in 2018. It encompasses 48 projects focusing on three fields: energy, digital and transportation.

By implementing these projects, the participating countries aim to answer the needs and priorities of the member states and provide a substantial contribution to the overall objective of the Three Seas Initiative. 

These projects help to stimulate economic growth, develop north-south infrastructure corridor, level regional disparities within the EU and boost cohesion and unity in Europe. 

The update of priority projects is made annually and presented during the Three Seas Summits. The 2020 update of projects is currently in progress and will be made public in autumn 2020 before the event in Tallinn.


Projects by countries

Bulgaria: (3)
1. Tunnel under Petrohan Pass 
2. Restoration of the design parameters of Ruse-Varna railway line
3. UGS Chiren Expansion

Czechia: (1)
1. Danube – Oder – Elbe Connection

Croatia: (11)
1. Ionic Adriatic Pipeline – IAP
2. LNG Terminal on the Island of Krk with evacuation pipeline
3. Sava IW section between Jaruge – Novi Grad
4. National Programme for the Development of Broadband Backhaul Infrastructure in Areas Lacking Sufficient Commercial Interest for Investments (NP-BBI Programme)
5. “Compressor station 1“ at the Croatian gas transmission system
6. Construction of A5 Motorway, Section: Hungarian border – Beli Manastir
7. Rehabilitation of rail section Čakovec – Varaždin - (Koprivnica) (63,32 km), railway line Zaprešić - Čakovec and railway line Varaždin – Dalj
8. Construction of the second track, renewal and modernization of the second trail section Škrljevo - Rijeka – Jurdani
9. Regulation works on the Danube river on km 1,322 (Sotin) 
10. Oil and Gas Terminal in Port of Ploče
11. Port of Rijeka

Estonia: (4)
1. Rail Baltica
2. Via Baltica
3. Commissioning of the regional LNG terminal in Paldiski
4. Construction of the 500MW Estonian PHES

Hungary: (5)
1. Construction of a 2nd track between Sopron and Györ, Phase 0: Section Sopron – Harka, including capacity increase of Sopron node.
2. Construction of the Zalaszentiván (HU) triangle track
3. Reconstruction and capacity improvement of traction substations in Hungary
4. Upgrade the railway link between the inland Freeport of Budapest and the core network corridor (reconstructing the Gubacsi railway bridge and upgrading the railway connection leading to the port) – works.
5. Preparation of the electrification on Zalaszentiván – Nagykanizsa railway line (HU)
6. Construction of a new road bridge over the Tisza in the Záhony area
7. North-South Gas Corridor – Expansion of existing capacity between Hungary and Slovakia
8. ROHU – Second Phase
9. Launching a Hungarian-American pilot project in Hungary, studing the use of hydrogen
10. Extraction of unconventional gas
11. 500 MW CCGT Power Plant to replace the Marta Power Plant
12. Development of 130-260 MW PV solar power plant
13. Development of intelligent electricity networks
14. Development of High-Performance Computing (HPC) infrastructure, establishment and operation of HPC ecosystem in the CEE-n region
15. Adaption of GSM-R towers to 5G

Lithuania: (6)
1. Gas Interconnector Republic of Poland-Republic of Lithuania (GIPL)
2. Integration and synchronisation of the Baltic States’ electricity system with the European networks
3. Viking train
4. Rail Baltica
5. Via Baltica
6. Purchase of the FSRU INDEPENDENCE (Klaipėda LNG terminal)

Poland: (9)
1. Gas Interconnector Republic of Poland-Republic of Lithuania (GIPL)
2. Via Carpatia
3. Diversification of gas supply sources and integration of gas infrastructure in the Three Seas Region with the implementation of the Baltic Pipe project and cross-border interconnections Republic of Poland-Slovak Republic and Republic of Poland-Ukraine
4. U-space, low altitude space as a new field of economy. Central European Drone Demonstrator (CEDD)
5. Baltic – Adriatic TEN – T Core Network Corridor
6. The 3 Seas Digital Highway, Rail Baltica
7. 3SI Marketplace
8. “Amber” Rail Freight Corridor
9. Danube – Oder – Elbe Connection

Romania: (7)
1. BRUA
2. Transportation stock exchange in the 3SI region
3. Digital Platform on monitoring hydrographic bases in the 3SI region
4. Via Carpatia
5. FAIRway Danube
6. Rail-2-Sea "Modernization and development of railway line Gdansk(PL) – Constanța (RO)"
7. Interoperability solutions for a digitized and sustainable energy sector in the 3SI area in the field of energy storage

Slovakia: (3)
1. Eastring
2. Modernisation of railway line Devínska Nová Ves – State border SK/CZ
3. Motorway D3 Čadca, Bukov – Svrčinovec

Slovenia: (5)
1. HU-SI gas interconnector
2. Pilot Project 5G PPDR - Public Protection Disaster Relief
3. SINCRO.GRID
4. Construction of the 2nd railway track between Koper and Divača
5. Reconstruction of the Ljubljana railway junction (LRJ)

For more information about the updating of priority projects, please contact the Three Seas Secretariat.