IN Brief:
- Northland has closed approximately PLN500 million of financing for two four-hour battery projects in Poland.
- Mieczysławów and Kamionka provide 300MW/1.2GWh of combined capacity and are already under construction.
- Capacity contracts will sit alongside wholesale and ancillary service revenues when operations begin in 2028.
Northland Power has closed approximately PLN500 million of project financing for its Mieczysławów and Kamionka battery storage projects in Poland, completing the funding structure for 300MW of power and 1.2GWh of energy capacity already under construction.
The financing has been arranged with Canadian and Polish financial institutions and sits alongside approximately PLN280 million of grants from Poland’s National Fund for Environmental Protection and Water Management. Northland says its equity requirement has already been met from corporate cash and available funding, with combined capital costs for the two projects estimated at about PLN1 billion.
Mieczysławów is the larger installation at 200MW/800MWh, while Kamionka is rated at 100MW/400MWh. Both are designed for four hours of storage at full rated output, giving the portfolio sufficient duration to move substantial volumes of electricity between periods of lower and higher system demand rather than operating solely as short duration frequency response assets.
Commercial operation is expected in early 2028 for Kamionka and in mid-2028 for Mieczysławów. Northland acquired the projects in November 2025 at a late development stage and moved both into construction during 2026, so financial close removes one of the main commercial risks between development and commissioning.
The projects combine contracted and market exposed revenue. Part of their income is covered by 17-year inflation indexed capacity agreements, while the batteries are also expected to participate in energy arbitrage and ancillary service markets. That gives the portfolio a long term contracted base while retaining exposure to the changing value of flexibility across Poland’s electricity system.
Each revenue stream places different demands on the batteries. Charging during periods of abundant generation can create opportunities to discharge into higher priced hours, while balancing services may require some capacity to remain available for system instructions. Capacity market commitments add another obligation because dependable output must be preserved for periods when the system is under stress.
Dispatch therefore depends on more than wholesale price spreads. Operating software must continually balance state of charge, market prices, reserve requirements, battery degradation, connection limits and contractual availability. Maximising short term trading income at the expense of excessive cycling can undermine longer term asset performance.
The electrical balance of plant will be equally important as construction progresses. Utility scale battery sites require power conversion systems, transformers, switchgear, protection, metering, communications, fire detection, thermal management and supervisory control to operate as an integrated plant. At a combined 300MW, grid compliance and the reliability of those interfaces will determine how much of the nominal flexibility can be delivered consistently.
Poland is adding renewable generation while retaining a power system with substantial conventional capacity, increasing the value of assets able to respond quickly to changes in supply and demand. Storage cannot replace transmission reinforcement or dispatchable generation, but it can absorb electricity during periods of excess supply, return it when conditions tighten and provide rapid balancing support.
Northland expects Kamionka and Mieczysławów to be among Poland’s first utility scale standalone battery facilities when they enter service. The company forecasts combined annual adjusted EBITDA of approximately CAD40 million to CAD50 million once both projects are fully operational, although the figure remains a management estimate rather than guaranteed operating income.
The projects also extend Northland’s position in Poland beyond its Baltic Power offshore wind investment. Generation and storage remain separate assets, but both depend on the same transition towards a power system with larger volumes of variable renewable electricity and a greater requirement for controllable flexibility.
Grant support reduces the amount that must ultimately be recovered through operating revenues, while project debt introduces repayment obligations tied to construction and operating performance. Northland has not disclosed detailed pricing, tenor or covenant terms, leaving the underlying financing economics private despite the headline funding figures.
With financing complete, delivery risk moves back towards construction, grid integration and commissioning. The remaining programme will determine whether two four-hour systems totalling 1.2GWh can reach their planned 2028 operating dates and convert contracted capacity and merchant flexibility into dependable grid performance.
