Annual Report 2025 – ÖBB-Infrastruktur AG

ÖBB-Infrastruktur Aktiengesellschaft Group Management Report | Consolidated Financial Statements 60 Increasing the degree of self-sufficiency in electricity from renewable energy sources is at the heart of the energy strategy adopted by ÖBB-Infrastruktur AG in 2023. Until 2030, further investments will be made in the expansion of renewable energies in order to increase the degree of self-sufficiency (own production and partner power plants) of the traction power supply to 80% by 2030+. In addition to projects to expand hydropower, ÖBB-Infrastruktur AG is also pushing ahead with the further expansion of the railway's own photovoltaic and wind power plants. The electricity generated by 50 Hz photovoltaic systems contributes to increasing the self-sufficiency of ÖBB-Infrastruktur AG’s buildings and operating facilities. In the 16.7 Hz photovoltaic systems, some of the traction current produced can be fed directly into the overhead line. Energy efficiency Energy efficiency is a key issue for the ÖBB-Infrastruktur Group, not only for environmental reasons but also for economic reasons. As defined in the energy strategy, internal energy efficiency is to be increased by 25% by 2030+. Optimisations in the area of buildings and operating facilities, as well as further measures such as the electrification of the vehicle fleet, represent important levers for improving energy efficiency in the future. Electrification Based on overarching federal and corporate strategies, the degree of electrification of the network will continue to increase in the coming years. A multi-phase electrification plan will raise the degree of electrification to 80% by 2030. During the next 10 years or so, further electrification measures shall be implemented on a total of 19 routes in addition to the new line construction. For branch lines and shunting areas where electrification is not feasible for economic reasons, the current diesel fleet will be gradually replaced by alternative drive technologies (e.g. accumulator railcars). With a view to enabling the highest possible share of electric, decarbonised operations and making optimum use of existing resources, battery operation, including the necessary infrastructure, has been defined as the most sensible option for some routes in consultation with decision-makers. This will create the conditions for 100% electric, decarbonised rail passenger transport by 2035. Decarbonisation of buildings The phase-out of heating oil by 2030 and the phase-out of fossil gas by 2034 have been defined as priorities for decarbonisation in the building sector. The order and number of existing heating systems to be converted to alternative energy sources by the 2030 and 2034 financial years have been determined based on their year of construction. Taking into account local conditions and the expected connection, installation and operating costs, the following alternative energy sources are planned to replace oil-fired and gas-fired heating systems: – Local or district heating – if a local distribution network is available – Heat pumps – ambient heat or geothermal energy and electricity as energy sources (air/water, brine/water or water/water) with underfloor heating or low-temperature convectors – Biomass – solid fuel heating systems using the oil tank room as biomass storage with existing radiators – Infrared panels – electrically operated heating surfaces for very low heating requirements (individual room heaters) In addition, ÖBB’s existing buildings are to be evaluated with regard to potential optimisation and gradually renovated in line with the Group-wide sustainability strategy so that the goal of climate neutrality (net zero) can be achieved in the building sector. In addition to the technical potential, the strategic orientation of the product portfolios and the administrative conditions will be taken into account. Decarbonisation of operating facilities To ensure that points function reliably even in snow and ice, they are equipped with heating systems. To advance the decarbonisation of operational facilities, a phase-out of natural gas switch heating systems by 2030 was adopted. At present, approximately 120 switch heaters are still powered by natural gas. The existing gas-powered switches are being gradually converted from natural gas to an electric power supply.