Romanian electricity transmission operator Transelectrica has announced an investment program exceeding 130 million euros for 2025, marking its most ambitious plan in recent years. The company aims to build more than 740 kilometers of new overhead power lines by 2030, supported by over 380 million euros in combined funding from European sources and internal resources.
Capital spending has steadily increased over the past three years, from around 90 million euros in 2022 to 93 million in 2023, reaching 106 million euros in 2025. Between 2022 and 2024, Transelectrica completed 18 major projects, with 22 more currently in planning, procurement, or execution.
Board President Stefanita Munteanu described Romania’s energy infrastructure as undergoing a historic transformation, emphasizing the need to secure the national grid, integrate renewables, and maintain competitiveness in the European energy market. The operator is accelerating construction on strategic infrastructure to strengthen cross-border connections, improve system flexibility, and enhance long-term supply security.
Romania’s high-voltage network currently includes 81 transformer substations and approximately 9,100 kilometers of transmission lines. Around 75% of the infrastructure has been fully refurbished, with remaining sections undergoing upgrades. Key ongoing projects include two digital substations, Mostiatea and Alba Iulia, co-financed through the Modernization Fund. Modernization work is also planned at additional sites, including the Ostrovu Mare substation, which will support electricity evacuation from the Portile de Fier 2 hydropower plant, following the completion of the 220 kV Ostrov–RET overhead line in June.
Over the past two years, Transelectrica built 60% of all new power lines installed in Romania over the last two decades. Notable recent completions include the 400 kV Cernavoda–Stalpu line (160 km) in 2022, the 400 kV Portile de Fier–Resita line (117 km) in 2024, and new connections to the Medgidia Sud substation (28 km) also in 2024.
By 2030, the operator plans to add over 740 km of overhead lines, supported by more than 380 million euros in funding. In the past three years, Transelectrica has secured 649 million euros in European funding through the Modernization Fund, the Sustainable Development Program, and the PNRR-REPowerEU mechanism.
At a strategic level, the company is exploring high-voltage direct current initiatives, including the planned Georgia–Romania submarine link and an east-west route within the country. Romania’s current interconnection capacity ranges from 4,000 MW to 4,500 MW, with a target of 7,000 MW by 2030. New cross-border projects launched this year include the 400 kV Timisoara–Arad overhead line, the 400 kV Gadalin–Suceava line, and the Suceava–Balti link.
A major priority for Transelectrica is expanding the network to integrate new electricity generation sources, especially renewables, and increasing storage capacity for grid stability and flexibility. The operator estimates that 4 GW of storage will be required by 2030, up from the current 249 MW, with an additional 250 MW expected to be deployed by the end of the year.
