Electricity

Repono acquires BESS project for 404 MWh in Romania

romania repono bess purchase Argeș

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Published

October 23, 2025

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Published:

October 23, 2025

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Swedish energy storage operator Repono has completed the acquisition of a 202 MW / 404 MWh battery energy storage system project located in Romania’s Argeș county.

Romania has become one of the most active markets for battery energy storage system (BESS) projects in South East Europe.

Developed by a domestic firm, the Argeș project reached a ready-to-build stage, Repono said. The investment benefits from a grid connection contract with the country’s transmission system operator Transelectrica. The entry point is the 220 kV Pitești substation, northwest of Bucharest.

Once operational, it will be among the largest grid-scale storage assets in Southeast Europe, capable of storing and releasing enough energy to supply more than 120,000 four-person households during peak-demand periods, according to the company.

The partnership with local developers includes a framework for additional energy storage projects

A partnership with local developers is set to drive significant future growth for the firm, based in Sweden.

It includes a framework for additional energy storage projects across Romania with a combined capacity of up to 1.4 GW, reinforcing Repono’s long-term commitment to the market, the update reads.

“This transaction represents an important milestone for Repono AB and demonstrates our continued commitment to developing large-scale storage infrastructure that supports Europe’s energy transition,” CEO Karim Nils Grueber stated.

De Kool: Large-scale storage assets are key enablers of a stable European power system

The Argeș project’s market optimization will be handled by Gunvor, in collaboration with Vienna-based optimiser Enspired. They are tasked with managing the energy offtake and market strategy to ensure the BESS is efficiently integrated into the Romanian and regional power markets.

According to Harmen de Kool, Chairman of the Board of Repono and a representative of InnoEnergy, large-scale storage assets like the one in Argeș are key enablers of a stable and decarbonized European power system.

It further fortifies InnoEnergy’s aim to achieve carbon neutrality, he added.

With this acquisition, Repono continues to expand its European portfolio of grid-scale BESS, with active developments spanning Germany, Romania, Italy, Austria, and Poland.

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