Northland Power, a renewable energy project developer, announced the acquisition of two battery energy storage systems totaling 300 MW/1.2 GWh in Poland. The projects were acquired from Greenvolt Power, a renewable energy project developer.
The project portfolio consists of the 200 MW/800 MWh Mieczysławów project and the 100 MW/400 MWh Kamionka project, both with a four-hour duration. The projects are located in western Poland.
A portion of revenue is secured under 17-year capacity auction contracts indexed to inflation, and additional revenue is expected to be realized through energy arbitrage and participation in ancillary service markets.
The project’s construction and financing are expected to begin in 2026, with an estimated total cost of €200 million (~$230 million). Once operational, the projects will be among the first BESS facilities in Poland.
Northland develops, owns, and operates a mix of energy infrastructure assets, including offshore and onshore wind, solar, battery energy storage, and natural gas.
“This acquisition marks an important milestone in advancing Poland’s energy transformation and expanding Northland’s portfolio in a core market,” said Christine Healy, President and Chief Executive Officer of Northland. “Battery storage is essential to enabling a reliable, lower-carbon energy system, and these projects represent a strong strategic fit with our growth ambitions.”
According to Mercom’s 9M and Q3 2025 Funding and M&A Report for Energy Storage report, there were 45 energy storage project M&A transactions in the first nine months of 2025 compared to 22 transactions in the same period of 2024.
In October, Energy Vault, a utility-scale energy storage project developer, announced the acquisition and planned development of the SOSA Energy Center, a 150 MW/300 MWh battery energy storage system located in Madison County, Texas. The project, located in the ERCOT North market, is expected to receive notice to proceed in the fourth quarter of 2025, with commercial operation scheduled for the first quarter of 2027.
