Romania is quickly becoming one of the most dynamic markets for battery energy storage systems (BESS) in Southeast Europe. Among the latest milestones is the Argeș project, developed by a local firm and backed by Swedish company Repono AB. The project has now reached the ready-to-build stage, signaling a major advancement for the region’s renewable energy infrastructure.

The project is connected to the national grid through a contract with Transelectrica, Romania’s transmission system operator. Its entry point will be the 220 kV Pitești substation, located northwest of Bucharest.

Powering Over 120,000 Homes

Once operational, the Argeș BESS will stand as one of the largest grid-scale storage facilities in Southeast Europe. The system will have the capacity to store and release enough energy to supply more than 120,000 four-person households during peak demand periods.

This capability is crucial for balancing Romania’s growing share of renewable energy, particularly from wind and solar. By storing excess energy and releasing it when demand surges, the facility will help stabilize the power grid and reduce dependence on fossil fuels.

Strengthening Local Partnerships

Repono’s partnership with local developers is paving the way for broader energy investments across the country. The collaboration includes a framework for additional energy storage projects with a combined capacity of up to 1.4 gigawatts. This long-term plan highlights Repono’s continued confidence in Romania’s energy market and its role in supporting Europe’s clean energy goals.

“This transaction marks a major milestone for Repono AB and demonstrates our ongoing commitment to developing large-scale storage infrastructure that supports Europe’s energy transition,” said Karim Nils Grueber, CEO of Repono.

Optimizing Market Efficiency

The market optimization for the Argeș project will be managed by Gunvor, in partnership with Vienna-based optimizer Enspired. Their task is to handle energy offtake and market strategy, ensuring the battery system operates efficiently within Romania’s national and regional electricity markets.

By integrating advanced trading and optimization strategies, the project aims to make renewable energy more reliable and cost-effective for consumers.

Driving Europe Toward Carbon Neutrality

Harmen de Kool, Chairman of the Board at Repono and a representative of InnoEnergy, emphasized that large-scale storage assets like Argeș are essential to building a stable and decarbonized European power system. He added that the project aligns with InnoEnergy’s vision of achieving carbon neutrality across the continent.

With this investment, Repono continues to expand its European portfolio of grid-scale energy storage projects. The company’s ongoing developments span Germany, Italy, Austria, Poland, and now Romania, each contributing to a future where clean energy is both accessible and dependable.