- Greenvolt Power sells two utility-scale battery energy storage projects in Poland with a combined capacity of 300 MW / 1.2 GWh
- The Projects – Mieczyslawów (200 MW / 800 MWh) and Kamionka (100 MW / 400 MWh) – are both at ready-to-build stage. Construction is expected to start in 2026.
- Once operational, the projects will be among the first large-scale BESS projects in Poland, supporting the country’s broader clean-energy transition.
- Northland Power is a Canada-based global power producer, owning and operating a diversified portfolio of energy infrastructure assets worldwide.
Greenvolt Power, a company of the Greenvolt Group and one of the leading developers of utility-scale wind, solar, and energy storage projects, has signed an agreement for the sale of two ready-to-build battery energy storage system (BESS) projects in Poland totaling 300 MW / 1.2 GWh. The buyer is Northland Power Inc., a Canada-owned global power producer that owns and operates a diversified mix of energy infrastructure assets worldwide.
The two projects – Mieczyslawów (200 MW / 800 MWh) and Kamionka (100 MW / 400 MWh) – are located in western Poland and have been designed with a four-hour storage duration, enabling them to strengthen system flexibility and provide essential balancing services. Both projects have secured 17-year capacity auction contracts indexed to inflation and are expected to begin construction in 2026, becoming among the first large-scale BESS facilities in Poland once operational.
This transaction is aligned with Greenvolt’s asset rotation strategy, which foresees the sale of approximately 70–80% of internally developed assets while retaining 20–30% on the balance sheet. This approach enables efficient capital allocation and supports the accelerated deployment of solar, wind and large-scale storage projects across Europe, North America and Asia.
'This agreement demonstrates Greenvolt’s ability to develop and bring to market large-scale projects, namely in battery storage. We have matured a strategically located pipeline that is attracting strong market interest, enabling us to execute our asset-rotation strategy, recycle capital and accelerate the deployment of clean energy projects' – said João Manso Neto, CEO of the Greenvolt Group.
For Northland Power, this acquisition strengthens its expanding presence in Poland and underscores the company’s commitment to supporting the country’s evolving energy needs.
'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, low-carbon energy system, and these projects represent a strong strategic fit with our growth ambitions.'
Poland’s power system is evolving rapidly as it shifts from predominantly coal-based generation to renewables. Installed solar PV and wind capacity is projected to rise significantly by 2050, intensifying the need for large-scale storage solutions that can balance the grid and ensure reliability.
'Projects such as Mieczyslawów and Kamionka respond directly to Poland’s growing system needs by reinforcing grid security, flexibility and stability. The sustained market appetite for these assets underlines the maturity and strategic differentiation of our projects pipeline' – said Radek Nowak, CEO of Greenvolt Power.
Greenvolt Power is one of the leading developers of large-scale wind, solar and energy storage projects, with presence in 19 markets across Europe, North America and Asia. The company has a current pipeline of 14.1 GW, of which 5.1 GW are expected to be ready to build by the end of 2025. It is also one of the world’s leading developers of battery energy storage systems (BESS) with a 4.7 GW pipeline.
Source: Greenvolt Power
