On Thursday, MET Group unveiled Hungary’s most powerful standalone battery energy storage system in Százhalombatta. The MET Duna Energy Storage unit, with a capacity of 40 megawatts (MW) and 80 megawatt-hours (MWh)—equivalent to a two-hour operating cycle—was installed on the grounds of the Dunamenti Power Plant and is fully owned by MET Group.
At the ribbon-cutting ceremony, Horváth Péter, CEO of MET Ltd, noted that the MET Group, established 18 years ago, acquired the Dunamenti Power Plant 11 years ago and has since transformed it into the company’s flagship facility. As part of its innovation-driven approach, MET has added solar power generation, upgraded gas turbine units, deployed electric boilers combined with energy reservoirs, and developed battery storage capabilities on the site.
The newly inaugurated facility comprises 48 battery containers and 240 inverters. The project received approximately 4 billion forints in non-refundable state support, though the total investment value was not disclosed.
Péter Kaderják, Executive Director of the Hungarian Battery Association, described the project as a ‘forward-looking’ and strategically important milestone. Alongside Paks, he said, Százhalombatta is now a cornerstone of Hungary’s energy infrastructure. Kaderják emphasized the need to harness domestic renewable energy sources using proven, cost-effective technologies as quickly and widely as possible.
According to a press release, this latest installation builds on a previous 4 MW/8 MWh battery storage unit MET deployed at the same location in 2022, utilizing Tesla Megapack 2 technology. The current system’s storage capacity would be sufficient to power all of Budapest’s public and decorative lighting for four hours.
The new battery units were manufactured by Huawei Technologies. Forest-Vill Ltd served as the main contractor, and the transformer was produced by Ganz.
MET Group, headquartered in Switzerland, employs around 1,100 people and operates as an integrated European energy company. It is active in natural gas and electricity markets as well as in developing and operating energy infrastructure. Through its subsidiaries, MET has a presence in 17 countries, operates on 32 gas markets, and trades at 44 international energy hubs.
In 2024, MET Group reported consolidated revenues of 17.9 billion euros, with a gas trading volume of 140 billion cubic meters and 76 terawatt-hours (TWh) of electricity traded. The Százhalombatta project is yet another sign of its growing influence and innovation in the region’s energy transition.
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