In a major boost to Germany’s clean energy and grid stability efforts, Kyon Energy and Saft, a subsidiary of TotalEnergies, have partnered to build one of the country’s largest battery energy storage systems (BESS) in Dahlem, North Rhine-Westphalia. The project will feature an impressive 100 MW output and 203 MWh storage capacity, positioning it among Germany’s most significant energy storage installations.
The Dahlem BESS is expected to play a pivotal role in enhancing grid flexibility and supporting the nation’s transition to renewable power. The facility is slated to begin commercial operations by October 2026.
Rapid Construction Sets New Benchmark
Construction is advancing at record speed. Delivery and installation of 70 battery containers and 35 Medium Voltage Power Station (MVPS) containers were completed in just 18 working days in October 2025 — a new benchmark in the sector.
Electrical work began in November 2025 and will continue for several months, alongside the phased construction of control system buildings. Foundations for the site’s 110 kV substation, including two high-voltage transformers, are ready. The transformers are scheduled to arrive by the end of 2025, enabling grid connection in early 2026, followed by system energization in the second quarter.
Cutting-Edge Battery Technology
The project uses Saft’s Intensium® Shift+ high-performance lithium-ion (LFP) battery containers, engineered specifically for large-scale energy storage. As subsidiaries of TotalEnergies, both Kyon Energy and Saft are driving innovation in sustainable power systems globally.
“Our partnership with Kyon Energy reflects Saft’s commitment to delivering advanced storage infrastructure across Europe,” said Vincent Le Quintrec, ESS Sales Director at Saft. “The Dahlem project will enable the integration of renewable energies with unmatched efficiency.”
Strengthening Germany’s Future Power Grid
Kyon Energy Managing Director Florian Antwerpen emphasized the critical role of energy storage in the nation’s clean energy goals. “Large battery storage systems are essential for grid stability and the rapid expansion of renewable energy,” he said. “With Saft, we have a trusted partner delivering highly reliable and powerful solutions.”
BESS projects like Dahlem help absorb surplus renewable energy and discharge it during peak demand, reducing electricity prices and decreasing dependence on fossil fuels.
Growing Pipeline of Large Energy Storage Projects
Kyon Energy has already commissioned storage facilities totaling over 155 MW, with another 1 GW+ under implementation alongside Saft. With a development pipeline exceeding 7 GW, the company remains one of Germany’s top leaders in large-scale battery storage.
For Saft, a century-old battery technology pioneer, the Dahlem project reinforces its position in Europe’s growing renewable energy landscape.
The Dahlem BESS stands as a cornerstone in Germany’s shift toward a resilient, low-carbon, renewable-powered future.
