Croatia-Slovenia Interconnector Gas Pipeline

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Croatia-Slovenia Interconnector Gas Pipeline is a proposed pipeline in Croatia and Slovenia.

Location

The pipeline will run from Lučko, Croatia; to Zabok, Croatia; to Rogatec, Slovenia.

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Project Details

• Operator: Plinacro d.o.o. (HR), Plinovodi d.o.o. (SI), Gas Connect Austria GmbH (AT)
• Owner: Plinacro d.o.o, Plinovodi d.o.o, Gas Connect Austria GmbH
• Parent: Plinacro d.o.o, Plinovodi d.o.o, Verbund, Snam, Allianz
• Capacity: 5 billion cubic meters per year
• Length: 72.8 km
  • Rakitje-Zabok section: 26 km / 16 miles
  • Jezerisce-Sotla section: 8 km / 5 miles
  • Lučko-BS Rakitje section: 10 km / 6.21 miles
  • Zabok-Jezerisce section: 25 km / 15 miles
  • Upgrade of Rogatec interconnection: 3.8 km / 2.4 miles
• Financing: €4,825,000 (US$5,352,190) grant for Plinacro from the EU's Connecting Europe Facility
• Cost: €88,450,000
• Status: Proposed
• Start Year: 2023
  • Rakitje-Zabok section: 2023
  • Jezerisce-Sotla section: 2023
  • Lučko-BS Rakitje section: 2023
  • Zabok-Jezerisce section: 2023
  • Upgrade of Rogatec interconnection: 2023

Background

The pipeline has been approved for inclusion on the European Commission's Projects of Common Interest (PCI) list, meaning it will receive public funding from the EU. In 2016, Plinacro was awarded a grant of €4,825,000 for preparatory activities on the Croatian part of the project.

The project consists of several short pipelines. According to the European Commission, "The PCIs include: Construction of a new pipeline of a capacity up to 5 bcm/y in both directions: Luko Zabok (HR), DN700 with 36 km length and Zabok - Rogatec (SI) DN700 with 34 km length; Upgrade of CS for higher operational pressure in the existing M1/1 and M2/1 pipelines, higher flow and bidirectional operation. The project aims to assure additional necessary compressor power (30 MW) for the PCI 6.26 Cluster Croatia - Slovenia - Austria at Rogatec; two compressor stations (CS2 Slobodnica: 5 MW and CS3 Zabok: 5 MW) on the HR gas transmission system that will enable reverse flow with the neighbouring countries and transport of gas from the Krk LNG terminal to the neighbouring countries; construction of a new compressor station of 13.7 MW in Murfeld (AT) and a pipeline of 26.1 km ensuring the physical reverse flow capacity between SI and AT; adjustment of SI part to operating parameters of the transmission system of the Austrian TSO, increasing the transmission capacity and enabling bidirectional operation. The project consists of a pipeline with a length of 0.16 km and a diameter of DN800. The expected incremental capacity brought by the project in the direction Murfeld (AT) -> Ceršak (SI) is 78.7 GWh/d and 162 GWh/d in the opposite direction; adjustment to operating parameters of the transmission system of the Croatian TSO, increasing the transmission capacity and enabling bidirectional operation. The project consists of a pipeline with a length of 0.16 km and a diameter of DN800.

The European Network of Transmission System Operators for Gas (ENTSOG) TYNDP codes for this project are: TRA-N-86 (Interconnection Croatia/Slovenia (Lučko - Zabok - Jezerišće - Sotla)); TRA-N-336 (Interconnection Croatia/Slovenia (Umag-Koper))., and; TRA-N-390 (Upgrade of Rogatec interconnection (M1A/1 Interconnection Rogatec)).

The latter 'Upgrade of Rogatec interconnection' section was included in the 5th PCI list published by the European Commission in November 2021.

As of July 2021, the European Commission expected the "Cluster Croatia - Slovenia - Austria at Rogatec" (6.26.1) to complete its feasibility study project stage by March 2022, reach a Final Investment Decision by December 2022, complete the FEED study by July 2023, gain the relevant permits by December 2024 and finish construction by December 2025 before commissioning in January 2026.

Costs

Identified costs are:

• €76.05 million (US$86.7 million) for Interconnection Croatia/Slovenia (Lučko - Zabok - Jezerišće - Sotla)
• €12.4 million (US$14.1 million) for Upgrade of Rogatec interconnection (M1A/1 Interconnection Rogatec)