Vattenfall's battery portfolio has grown rapidly to exceed 1.2 GW in power, the company announced on 26 October 2026.

The milestone follows two developments: a final investment decision for the company's Brunsbüttel battery in Germany and a recent agreement with Royal Vopak for battery capacity in the Netherlands.

Battery deals expand storage capacity in Germany and the Netherlands

The Brunsbüttel battery will have an output of 254 MW, while the agreement with Royal Vopak secures access to 100 MW of battery capacity near Meeden in the Netherlands.

The Vopak deal takes the form of a tolling agreement covering a portion of the planned battery energy storage system near Meeden in the province of Groningen.

These developments come as Europe's need for flexibility is rising fast, according to the company.

Market breakdown across four countries

According to figures published by Vattenfall, the portfolio spans four markets.

In Germany, the company has 55 MW of operational power and 656 MW in its pipeline, for a total of 711 MW. In the Netherlands, it operates 65 MW with 400 MW in the pipeline, totalling 465 MW. Sweden accounts for 98 MW, all operational, while the United Kingdom has 20 MW, also operational.

In total, Vattenfall reports 238 MW of operational power and 1,056 MW of pipeline power, adding up to 1,294 MW.

For scale, the company notes that 1.2 GW of battery output could simultaneously supply more than 100,000 electric vehicles charging at 11 kW. The company's calculation puts the figure at approximately 109,000 EVs, based on dividing 1,200 MW by 11 kW.

Why batteries matter to the energy system

Vattenfall outlines the role of battery storage in the wider energy system: batteries store electricity when plenty is available and release it when demand is higher. This helps keep supply and demand in balance and makes better use of existing grid infrastructure.

Using stored electricity at busy times can reduce the need for more expensive back-up generation and ease pressure to build grid capacity solely for short periods of peak demand.

Company leadership on flexibility and partnerships

"Battery storage helps build a more flexible, reliable, and affordable energy system," said Sjur Jensen, Head of Business Area Markets at Vattenfall.

"We combine our own assets with partnerships to market and optimise battery capacity for others, creating value for customers and partners while providing flexibility where the system needs it most."

Claus Wattendrup, Head of Solar and Batteries at Vattenfall, framed the investments in the context of the changing European power market. "The new energy landscape needs more than renewable generation. It needs flexibility. Large-scale battery storage is key to providing that flexibility," he said.

"Investing in our own large-scale batteries gives us the flexibility to thrive in a changing power market and play a lasting role in the transition away from fossil fuels."

Context of recent announcements

The Vopak agreement follows an announcement on 13 October 2026, when Vattenfall said it had signed a tolling agreement with Royal Vopak for a portion of the planned battery energy storage system near Meeden in Groningen, aimed at further integrating renewable energy into the Dutch power system.

The company's battery activities have also extended into customer-facing applications. In August 2026, Vattenfall batteries provided fossil-free electricity to the Way Out West festival in Gothenburg, one of the biggest music festivals in Northern Europe.

The portfolio announcement was accompanied by press materials, including portraits of Jensen, Senior Vice President of Business Area Markets, and Wattendrup, Head of Solar and Batteries. Further information is available from Vattenfall's Press Office.

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