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Under the partial tolling agreement, Centrica Energy will optimise and trade the asset across Nordic power markets, leveraging its 24/7 trading and multi-market optimisation capabilities to unlock value across wholesale, balancing and ancillary service markets. Through the partial tolling structure the project benefits from secured revenues while maintaining merchant upside.
Commissioning is planned for Q4 2027, and once operational, Karppio will provide critical flexibility to Finland's power system, supporting frequency regulation, balancing requirements and the continued integration of renewable generation.
The agreement further strengthens the partnership between Centrica Energy and Delta Capacity, following the go-live of Delta Capacity's Ånge BESS project in Sweden (SE2, 70 MW / 160 MWh) earlier this year, currently the largest operating BESS in the Nordics, where Centrica Energy also provides optimisation services.
Cassim Mangerah, Managing Director of Centrica Energy
"This agreement is another important step in the growth of our Nordic flexibility portfolio and reflects the increasing role battery storage is playing in modern power systems. Finland continues to see strong growth in renewable generation, creating increasing demand for flexible assets that can respond to market and system needs in real time. We look forward to working alongside Delta Capacity and the wider project team to maximise the value of this asset and support the continued development of Finland's energy transition," said Cassim Mangerah, Managing Director of Centrica Energy.
"This agreement reflects the kind of long-term relationships we look for as we scale across the Nordics. Centrica Energy brings proven trading expertise and a strong track record in Nordic power markets, and we are confident this partnership will deliver strong outcomes for Karppio from commissioning through its full operating life," said Patrik Hes, CEO of Delta Capacity.
Finland's power system is among the cleanest in Europe and continues to see rapid growth in renewable generation, particularly wind power. As more renewable capacity comes online, battery storage is playing an increasingly important role in maintaining system stability, balancing supply and demand, and enabling more efficient use of renewable energy.