The energy group Ewii placed an order for several large battery systems during 2023. These systems are now being built, and within six months Ewii will have batteries with a total capacity of 47 MW and 63 MWh spread across the country.
- New systems are needed to handle the increasing amount of green energy. At Ewii, we have seen an exciting opportunity in establishing battery storage systems that can support Energinet, the local grid companies and the green transition. We have developed expertise, and with the capacity we are now rolling out, we will become a leader in the Danish market, says Claus Møller, Director of Commercial Infrastructure at Ewii.
Ewii is currently investing approximately a quarter of a billion DKK in the battery investment. The energy group's first battery on Funen was approved in the autumn to deliver so-called system services to Energinet.
Denmark's largest for Bornholm
The largest of Ewii's batteries will be located on Bornholm, where it will also provide system services. Ewii has just started establishing the battery as a neighbor to the high-voltage station near Hasle. It has a capacity of 30 MW and 43 MWh.
There are several reasons why Ewii has chosen western Bornholm for what will be Denmark's largest battery plant to date. One of them is that Bornholm is supplied with electricity via a submarine cable to Sweden, and the people of Bornholm have experienced blackouts when there have been breaks or problems with the submarine cable.
- Ewii's battery would be able to keep the whole of Bornholm running with electricity for about an hour. If the submarine cable fails, the battery would be able to quickly connect and supply the island while the boilers at the local power plant heat up. It is not a current option at first, but we hope that in time it will be a solution that will benefit the people of Bornholm, says Claus Møller.
The battery on Bornholm will be put into operation during the second half of 2024.
Batteries throughout the country
Ewii is also in the process of establishing a battery system of three MW and 3.5 MWh in Korsør. In addition, construction of a similar system has just begun at the group's head office in Kolding.
In addition, a battery system Lindø Offshore Renewables Center in Munkebo is gradually being built, which will have a total effect of eight MW and 9.2 MWh.
- Our batteries don't look like much. They look like ordinary containers, but the importance they have for the stability of the Danish electricity grid, which will be increasingly challenged in the future – and for Ewii – should not be mistaken. It is truly a technology that can help the green transition, concludes Claus Møller.
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