
Photo: iStock
The investment in Repono1 battery energy storage system reached the ready-to-build point, the project’s developer Jantzen Renewables said. The site is in Teleorman county in Romania’s south. The facility would increase the country’s current grid-scale battery power by half.
Jantzen Renewables announced that it “obtained all necessary building permits” for its Repono1 (or Repono 1) battery storage project, thus reaching ready-to-build status. The site for 360 MW in overall capability is in Blejești in Teleorman county, just outside Bucharest.
“As renewable energy generation continues to expand, energy storage solutions such as Repono1 provide the flexibility needed to balance supply and demand. This capability is essential for supporting a reliable electricity system and accelerating the transition toward a cleaner and more sustainable energy future,” said the company.
Established in 2020, it is a spinout from Jantzen Development, part of Jantzen Group Denmark.
“Reaching ready-to-build for Repono1 represents an important step in Jantzen Renewables’ growing portfolio of triple-A quality renewable energy projects. Through the development of solar, wind, and battery storage projects, the company continues to contribute to strengthening the resilience and sustainability of the energy system of Romania,” the update reads.
The company is developing a pipeline of renewable energy assets totaling over 2 GW across the country.
Romania on track to reach 2 GW in BESS by year-end
Notably, the Blejești facility would increase Romania’s current grid-scale battery power by at least half!
Nevertheless, developers recently revealed substantial progress in projects including or for battery energy storage systems (BESS) for almost 1 GW in combined operating power. The country is on track to reach 2 GW in total capability by the end of the year.
Repono 2 battery projects underway
Jantzen Renewables’ Repono 2 project pipeline for BESS is for several units of 13 MWh to 15 MWh in capacity. The locations are also in southern Romania, but in Transylvania as well.
The company agreed three years ago to sell the project for the Helios 1 photovoltaic cluster to OMV Petrom. The transaction for the overall 710 MW in peak capacity went through in 2024. The locations are in the Băbăița commune in Teleorman, near Blejești.
Jantzen Renewables’ Helios 2 would be another solar power cluster. The project in southeastern Romania is for 463 MW in peak capacity. The company is waiting for grid access.







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