Centrica Energy to Trade 125 MW AKKU One Battery in Finland Under New Tolling Deal

A 125 MW / 300 MWh standalone battery energy storage system taking shape in Lapinlahti, Finland, will be optimized and traded by Centrica Energy after the company signed a partial tolling agreement with Delta Capacity and Covenergo for the AKKU One project.

A Second Finnish Tolling Deal in a Month

The deal is the second partial tolling agreement struck between Centrica Energy and Delta Capacity in Finland within a single month, following the same structure recently agreed for the 125 MW / 300 MWh Karppio BESS project.

Taken together with Centrica Energy's optimisation role on Delta Capacity's 70 MW / 160 MWh Ånge BESS in Sweden, the companies describe the arrangement as evidence of a fast-growing Nordic flexibility partnership. Under the partial tolling structure, the AKKU One project secures revenues while retaining merchant upside.

Centrica Energy will manage the asset across Nordic power markets, drawing on its 24/7 trading and multi-market optimisation capabilities to capture value in wholesale, balancing and ancillary service markets. For Covenergo, which owns and develops the project, the agreement marks a milestone for its portfolio of flexible assets and strengthens its strategic presence in the Nordic energy market.

Project Timeline and Role in the Finnish System

Commissioning of AKKU One is planned for Q4 2027. Once operational, the battery will provide flexibility to Finland's power system, supporting frequency regulation, balancing requirements and the continued integration of renewable generation.

The announcement situates the project in a market where battery storage is becoming increasingly significant. Finland's power system is among the cleanest in Europe and continues to see rapid growth in renewable generation, particularly wind power.

According to the company, as more renewable capacity comes online, battery storage plays an increasingly important role in maintaining system stability, balancing supply and demand, and enabling more efficient use of renewable energy.

What the Executives Said

Cassim Mangerah, Managing Director at Centrica Energy, said AKKU One is the company's third battery storage project with Delta Capacity and lifts the battery capacity it optimises together across the Nordics to more than 400 MW. He noted that as power systems become increasingly shaped by renewable generation, flexible assets such as battery storage play a critical role in balancing supply and demand and creating value from market volatility.

The project, he added, strengthens Centrica Energy's asset-backed trading business in the Nordics. František Kalivoda, CEO of Covenergo, described AKKU One as a flagship project in the company's growing BESS portfolio. He said the agreement reflects Covenergo's ability to originate, develop and structure large-scale, bankable energy storage projects, and that with Centrica's trading and optimisation expertise, AKKU One is well positioned to maximise its long-term value while contributing to the flexibility of Finland's energy system.

Patrik Hes, CEO of Delta Capacity, said that signing two tolling agreements with Centrica Energy in Finland within a single month shows the pace at which the company is scaling its Nordic platform. He said Centrica Energy brings proven trading expertise and a strong track record in Nordic power markets, and that with Covenergo's ownership and development of AKKU One, the agreement gives the project a clear, well-supported route to market.

Who the Partners Are

Centrica Energy is the energy trading and optimisation arm of Centrica plc, responsible for managing commodity risk and sourcing energy on behalf of Centrica Group's energy supply activities. It operates as a global energy trading company, trading power, gas, liquefied natural gas and green certificates across 8 offices on three continents with more than 800 energy experts.

Centrica Energy ranks among the largest renewable asset managers in Europe, with over 18.8 GW of capacity under contract, of which more than 85% is renewable assets. Covenergo is a renewable energy services company with expertise spanning renewable energy development, BESS and hybrid systems, project finance, EPCM and construction management, as well as strategic partnerships and M&A.

Operating across six countries, Czechia, Greece, Cyprus, Romania and Finland,the company has a team of 55 professionals and currently manages more than 180 MWh of BESS and 72 MWp of PV under construction.

Covenergo works with private, institutional and public-sector investors to structure and deliver investment-ready energy projects. Delta Capacity, founded in 2022 and based in Switzerland, aims to develop, acquire, own and operate utility-scale battery storage across Europe. The company currently has nearly 1,000 MWh under construction and targets the build-out, commissioning and operation of more than 6 GWh of flexible battery storage.