Hungary’s MOL has commissioned a €59.4 million solar-and-storage complex at its Algyő oil and gas site. The project is designed to convert part of the operating hydrocarbon infrastructure into a hybrid power setup. It is intended to support electricity self-sufficiency for the Algyő operation while enabling surplus generation and storage to interact with the wider market.
The installation combines around 37.4 MWp of solar capacity with a 20 MW/40 MWh battery energy storage system. MOL said the renewables and batteries are embedded directly in an operating oil-and-gas production site rather than developed as standalone assets. The arrangement is aimed at reducing exposure to purchased electricity prices and improving control over energy costs at an industrial facility.
Solar-plus-storage integration at an operating oil and gas site
The Algyő complex is structured to make the site largely self-sufficient in electricity. At the same time, the system is set up to allow surplus power and stored energy to be made available beyond the immediate facility. This creates an on-site power asset that can respond to conditions in Hungary’s electricity market.
MOL’s broader generation portfolio in Hungary includes nine solar parks with total capacity of around 405 MW. The company also operates two battery installations totalling about 80 MWh. MOL is targeting 500 MWh of storage by 2030, extending its use of batteries beyond existing deployments.
Industrial batteries amid volatile Hungarian power prices
Hungarian electricity prices have shown extreme intraday spreads in recent weeks. Evening scarcity prices have risen above €600/MWh, while periods dominated by renewable generation can be far cheaper during the day. This price pattern increases the value of industrial storage compared with backup generation alone.
A battery at an energy-intensive industrial site can charge during lower-price hours and reduce grid purchases during more expensive periods. It can also potentially support market or balancing services, depending on how it is operated within the power system.
The shift toward pairing on-site renewables with batteries is relevant for multiple types of large electricity users. Refineries, mines, factories, airports and data centres face similar exposure to volatile power prices. Storage can also help manage consumption across different hours, not only provide emergency supply.
For MOL, the Algyő project reflects a change in how legacy energy infrastructure operates. A site built around oil and gas production is now using solar generation and battery storage as part of its power system management.
