A 47-megawatt battery energy storage facility is being built at a cost of 12.5 billion forints on the grounds of the Oroszlány Power Plant through a joint effort by four companies, the project manager Gábor Jeszenszky told MTI.
The facility is capable of meeting the needs of MAVIR Plc., which balances the Hungarian electricity system, without delay, as well as feeding electricity into the grid during peak periods.
It consists of 40 standard shipping containers, each containing 1,500 lithium-ion battery cells. The equipment is sourced from China and the system is coordinated by a German-made SMA power converter.
When fully charged, the energy storage facility can deliver 47 megawatts of power for three hours, which meets the energy needs of a medium-sized city. The batteries have a guaranteed lifespan of 15 years, but based on aging experience to date, they can operate for up to 20 years.
The facility’s total capacity is 135 megawatt-hours, with a combined efficiency of 88 percent for charging and power output. Operations are managed by the Veolia Group’s Oroszlány Power Plant.
The development, scheduled for completion by the summer of 2026, is being implemented with a grant of HUF 5 billion from the European Union’s Recovery and Resilience Facility (RRF), while the participating companies are contributing HUF 7.5 billion of their own funds.
The investment is being carried out by two project companies of NAP Plc. — L&F Lovas Ltd. and RM4 Ltd. — as well as ÉP-CAR-NET Building Industry Trade and Service Ltd., Helionergy Hyperion Ltd. and Helionergy Iota Ltd.; these companies are owned by Hungarian private individuals.
Top 5 Articles
Duna House Profit Climbs Nearly 70% in Q3 November 24, 2025 
What Awaits the Hungarian Economy in 2026 and 2027? April 24, 2026 
'Recharge' Campaign Launched to Boost Domestic Tourism January 21, 2026 
Hungary’s Growth Stalls as Inflation Returns to Target Range February 6, 2026 
Business, Consumer Confidence at Two-Year High in April April 23, 2026
