
The Italian energy company Heliopolis, headquartered in Milan and operating offices in Timișoara and Bucharest, has unveiled plans for a large-scale hybrid photovoltaic and battery storage project in southeastern Romania, with a total capacity exceeding 400 MW and nearly 1,000 MWh of energy storage.
The project, located in Călărași County (the Budești and Vasilati areas), is described by Heliopolis as one of Romania’s most significant integrated PV and battery energy storage system (BESS) developments. According to a statement published on the company’s LinkedIn page, the initiative has officially reached the “Ready to Build” stage.
The development comprises four hybrid plants with a combined installed capacity of 307 MWp of photovoltaic power and 224 MW / 976 MWh of battery storage. All facilities will be connected through a single access point to the national 400 kV transmission grid.

Heliopolis also announced plans to further expand the project, targeting a total capacity of 600 MWp of solar power and 450 MW of four-hour battery storage. The company emphasized that the expansion aligns with its broader commitment to advancing strategic energy infrastructure and supporting Europe’s energy transition.
According to the latest data from Romania’s energy regulator ANRE, dispatchable photovoltaic capacity in the country has reached 3,145 MW, making solar power the second-largest source of electricity by installed capacity. Battery storage capacity has also grown rapidly, reaching 486.4 MW and 898.6 MWh as of December 1, based on figures from Transelectrica. This milestone follows the recent commissioning by Nova Power and Gas of Romania’s largest battery system, with an installed power of 201 MW and a storage capacity of 402 MWh.
Source: energy-world.eu