Renalfa Solarpro Group has begun construction of the Horia 2 solar power plant in Arad county, Romania, launching the first stage of a larger complex combining solar generation and battery storage. Horia 2 will have 269 MW of grid injection capacity. Solarpro Holding is responsible for engineering, procurement and construction.
The plant is part of the Horia-Arad cluster, which Renalfa is developing with French investment manager RGreen Invest. The wider project’s first phase is planned to include 568 MW of solar capacity and batteries rated at 669 MW, with 2,000 MWh of storage capacity. A later phase could add a standalone 400 MW/1,608 MWh battery facility and potentially more photovoltaic generation.
Storage technologies and project scope
Renalfa and RGreen are considering both lithium-ion and sodium-ion batteries, rather than selecting a single storage chemistry. The complex is expected to use an artificial-intelligence-based management platform to coordinate solar output, battery charging and discharging, and deliveries to the grid. The project builds on the partners’ April acquisition of a 365 MW solar development and a separate 400 MW/800 MWh battery project in Arad county. Those assets are being redesigned and incorporated into the wider Horia-Arad scheme, as Romania becomes one of Southeast Europe’s most active markets for combining utility-scale solar generation with increasingly large battery systems.
