One of the key goals of Slovenia by 2030, in line with the National Energy and Climate Plan adopted by the Government of the Republic of Slovenia on December 18, 2024, is to reduce the use of fossil energy sources and dependence on their imports. This goal will be achieved also through the implementation of pilot projects for the production of synthetic methane and hydrogen, with an indicative goal of achieving a 10% share of renewable methane or hydrogen in the transmission and distribution system by 2030.
The gas transmission system operator is already carrying out activities to prepare the transmission system for the injection and operation with hydrogen and renewable gases. The transmission system operator will ensure that gas transmission infrastructure will be ready for the injection of gases from renewable energy sources (RES), such as hydrogen, synthetic methane, and biomethane, as well as testing the operation of end-user appliances connected to the transmission system with various renewable gas mixtures.
However, the transmission system operator will not be involved in commercial market activities to avoid any subsidization of market activities or violations of certification provisions.
At the same time, the transmission system operator (TSO) will, within the possibilities of cooperation, innovation and cross-border renewable energy projects incentives and related support instruments, strive to seek co-financing opportunities. This approach will contribute to the realization of sustainable projects for decarbonizing the gas sector and achieving long-term climate neutrality goals for the member states of the European community. TSO will align its development activities with the development activities of other European TSOs regarding initiatives and transmission system supply decarbonization planning, cross-border connections and European hydrogen backbone development.
TSO coordinated with the neighboring TSOs two hydrogen corridors spanning across Slovenia and connecting Slovenia with neighboring countries. Both corridors are candidates projects for PCI status.
| Section | Description | Expected commissioning date |
| R15/1 Pince - Lendava - Kidričevo | New hydrogen pipeline from SI-HU border to CS Kidričevo, including new hydrogen BMCS Pince for new SI-HU IP. | 2035 |
| Repurposing of existing pipeline section (CS Kidričevo – BMCS Rogatec) | Repurposing of the existing gas pipeline from CS Kidričevo to BMCS Rogatec, including upgrade of the existing BMCS to enable measurement and regulation of hydrogen flow. | 2029 |
| Repurposing of existing pipeline section (BMCS Rogatec – MCS Vodice) | Repurposing of the existing gas pipeline from BMCS Rogatec to MCS Vodice. | 2029 |
| M3/1 Vodice - Šempeter | New hydrogen pipeline from MCS Vodice to SI-IT border (BMCS Vrtojba), including upgrade of the BMCS Vrtojba and MCS Vodice to enable measurement and regulation of hydrogen flow. | 2035 |
| CS Ajdovščina | Additional hydrogen compressor units including relevant upgrades on the location of existing gas CS Ajdovščina. | 2035 |
| CS Kidričevo | Additional hydrogen compressor units including relevant upgrades on the location of existing gas CS Kidričevo. | 2035 |
| Section | Description | Expected commissioning date |
| Ceršak interconnection upgrade (phase 1) | Upgrade of existing BMCS Ceršak to enable hydrogen measurement and flow regulation, new IP with Austria including 160 m hydrogen pipeline section from BMCS Ceršak to SI-AT border. | 2029 |
| Repurposing of existing pipeline section (BMCS Ceršak – BMCS Rogatec) (phase 1) | Repurposing of existing as pipeline from BMCS Ceršak (SI-AT IP) to BMCS Rogatec (SI-HR IP). | 2029 |
| CS Kidričevo (phase 2) | Additional hydrogen compressor units including relevant upgrades on the location of existing gas CS Kidričevo. | 2035 |
| Rogatec interconnection upgrade (phase 2) | Upgrade of existing BMCS Rogatec to enable hydrogen measurement and flow regulation including 3.8 km hydrogen pipeline from BMCS Rogatec to SI-CRO border. | 2035 |
TSO is also planning in its TYNDP other hydrogen projects regarding hydrogen infrastructure development and hydrogen adoption.
| Project / section | Description | Expected commissioning date |
| Analysis, studies and renewable gas related testing | Analysis and studies of the transmission network and its components regarding the acceptance of renewable gases (including hydrogen) and testing to determine permissible shares and composition of renewable gases in the transmission pipeline system for safe, reliable, and efficient operation of the transmission pipeline system. | 2026 and after 2026 |
| Projects for preparing the transmission system for operation with hydrogen and renewable gases. | Analysis of suitable locations and upgrade planning of the transmission pipeline system to be suitable for the injection and operation with hydrogen and renewable gases. Mobile hydrogen injection skid. | 2026 and after 2026 |
| SLOP2G | Gas/hydrogen transmission related part of the electricity and gas sector coupling project and renewable gas production for own use of TSO. The scope of the project is connecting the green hydrogen production plant to the transmission system via hydrogen blending and injection skid, including implementation of all systems necessary for remote control of the operation of hydrogen injecting. Part of the produced hydrogen quantities may be used for own consumption of TSO. | np |
| R25D-H Šoštanj - Šentrupert | Designing of technical guidelines for further technical and spatial planning for new hydrogen pipline (for pure hydrogen) from Šoštanj to Šentrupert including injection of hydrogen in pipeline M2/1. | po letu 2027 |
| R25A/1 second phase: Trbovlje – Hrastnik – Podkraj | Construction of hydrogen pipeline, connecting location of former TET power plant (Lakonca) and glass production company Steklarna Hrastnik for supplying Steklarna Hrastnik with hydrogen. | np |
| Small scale and connecting hydrogen pipelines | Designing of technical guidelines for further technical and spatial planning for new small scale and connecting hydrogen piplines for transport of pure hydrogen in order to enable operation of hydrogen production plants and to connect hydrogen production locations with hydrogen consumption locations in cases, when injection of hydrogen in existing gas system is not possible due to the upper hydrogen concentration limits. | Depends on expressed interest |
| M5/R51 repurposing | Repurposing of existing pipeline from MCS Vodice to MCS TE-TOL, including upgrade of the existing stations to enable measurement and regulation of hydrogen flow. | 2029 |
| R21AZ repurposing | Repurposing of existing piepline from Konjiška vas to Oplotnica, including upgrade of the existing stations to enable measurement and regulation of hydrogen flow. | 2029 |
