Bornholms Energi & Forsyning (BEOF) plans to install a 10 MW battery in the old coal-fired power plant building at the port of Rønne. It will be Denmark's first and largest of its kind and will contribute to the green transition and security of supply on Bornholm. BEOF writes in a press release.
- We are incredibly happy and proud that our power plant, with this investment, will become an even stronger player in the green transition. It strengthens our security of supply, makes it possible to preserve and reuse the historic buildings, and ensures that more of the green energy can be utilized here on the island. The battery also gives us an economic advantage because we can sell more types of services to the Danish and Nordic electricity market. In this way, it is an investment that helps us create value on Bornholm, and it is also a solution with important perspectives for the green transition in general, says Julius Kofoed, Head of Commercial Infrastructure at BEOF.
BEOF is responsible for supplying Bornholm with electricity if the connection to Sweden fails. An electricity cable on the bottom of the Baltic Sea connects the island to the Swedish electricity grid, but it has previously been damaged, including in 2012, 2017 and 2022. In such situations, Bornholm must operate in so-called island operation, which can take up to six hours to establish. The new battery is expected to significantly reduce the start-up time.
Area Manager for Flexibility and Balancing at Energinet, Kia Marie Jerichau, is positive about the battery's potential.
- Every second of the day, we need someone to be able to increase or decrease production or consumption so that the electricity system does not become unbalanced. Batteries can both absorb electricity and send it back to the grid if, for example, a wind front arrives a little later than expected or a fault occurs in the electricity system. It is good that more people see good business in being able to contribute and deliver the system services that we buy every day on behalf of society to ensure that the electricity supply is stable, she says.
The battery is supplied by the Swiss-based technology company Hitachi Energy, which sees great potential in the model.
- With this project, Bornholm is at the forefront of the green transition. It is a good example of how our experience and innovative BESS solutions can accelerate the energy transition and give old plants new roles for the sustainable energy future, says Claus Madsen, Country Managing Director at Hitachi Energy.
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