Electricity transmission system operator Mavir Zrt. will invest HUF 400 billion (EUR 1 billion) in grid expansion in the medium term. These investments are intended to prepare the grid for the increasing consumption and significantly increasing feed-in from solar plants.
In addition to the expansion of existing substations in Pécs, Hévíz, Szabolcsbáka near Kisvárda and Perkáta near Dunaújváros, further transformers will have to be installed. The Albertirsa and Martonvásár substations will be upgraded to higher environmental standards. In particular, the large solar parks should be able to be connected to the grid more quickly. Already today, the installed solar capacities are around 4,000 MW, and another 5,000 MW are to be added by 2027.
The international electricity interconnection is to be stabilized by 2030 with increased capacities of the existing 400 kV lines from Békéscsaba to Nadab in Romania and from Sándorfalva near Szeged to Subotica in Serbia, as well as a new 400 kV long-distance line from Debrecen to Oradea in Transylvania.
EU funds from the Reconstruction Fund will be used to improve the capital’s security of supply via the Kerepes substation. Lines will also be replaced on more than 500 km in Budapest and a total of twenty 400 kV substations will be modernized by the end of 2024.