Largest Electricity Storage Capacity Installed and Produced in Romania

The Monsson Group has recently inaugurated, in Constanta County, the largest electricity storage unit installed and produced in Romania, the battery system being made by Prime Batteries Technology. Storage capacity will help reduce the volatility of renewable energy production and thus contribute to the stability of the energy system. This is part of the first hybrid photovoltaic-wind-battery project, within the Mireasa Wind Park, with a capacity of 50 MW.

The storage system is installed next to the Mireasa wind farm and the Galbiori solar park and will be fully connected to the grid by the end of 2024.

Prime batteries are set to be charged mostly at peak production times when energy demand and prices are low.

The storage unit has an installed power of 24 MWh – (6MWx4h), is built by Monsson, through a unique project, patent pending, and uses batteries of local production, produced by the Romanian company Prime Batteries Technology.

This first phase is just one of three phases that will make up a total of 216 MWh of storage capacity to be commissioned during 2024-2025.

The storage unit will be charged with energy produced by the existing operational 50 MW Mireasa Wind Farm, with photovoltaic energy produced by the 35MW Galbiori 2 photovoltaic park under construction and to connected to the grid in 2024, as well as from the national grid when there is no wind or sun.

Control of the hybrid project is fully automated remotely, without local operational staff, and will operate in an integrated system through proprietary software developed by Monsson.

“At the moment, this project is in the top 5 in Europe, but if it successfully reaches 216 MWh in total storage, it will be the largest storage facility in Europe. The 24 MWh battery consists of 132 battery strings with 114,048 lithium-ion cells containing 1240 kilometres of active material electrodes, about the distance from here to Vienna. It took about 4,200 hours of engineering on the electrical side, 3,000 hours of engineering on the mechanical side, engineering that we are proud to say was done in Romania, in Bucharest and Constanta, by our colleagues at Monsson,” said Vicentiu Ciobanu, Chief Executive Officer, Prime Batteries.


About Prime

The Romanian company Prime is one of the leading producers of energy storage solutions in the European Union. The company was founded in 2016 and is based in Bucharest. With over 37 years of cumulative experience in the Li-ion battery business, the company is focused on adding value in the energy storage solutions industry.

By implementing appropriate policies and regulations, Prime contributes to achieving the ambitious decarbonisation targets set by the European Commission.

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