NÜRTINGEN, Germany — ADS-TEC Energy ended 2025 with a series of new contracts for large-scale battery energy storage systems (BESS) in Germany and Austria, reflecting growing demand from regional utilities. The December agreements total 20 MW/40 MWh of capacity, all of which have advanced into detailed planning.
“Towards the end of the year, our battery energy storage business gained significant traction. These newly signed projects reflect the trust that energy utilities are placing in us. These businesses increasingly value companies with long-standing experience, proven references and strong technical execution capabilities, and, across the entire value chain, this is where we are well positioned,” said Thomas Speidel, CEO of ADS-TEC Energy.
The latest wins build on ADS-TEC Energy’s expanding reference base, which includes systems operating successfully since 2016 and the recent selection by Stadtwerke Ludwigsburg-Kornwestheim (SWLB). SWLB chose a BESS5000 system with 5 MWh capacity for integration with its biomass power plant to enhance grid stability and participate in energy and ancillary service markets.
Earlier in December, the company delivered its first large-scale storage installation in Austria at AAE Naturstrom. The commissioned BESS5000 unit, also 5 MWh, was integrated with a photovoltaic array to demonstrate how locally generated solar energy can be stored, marketed and fed back into the grid as needed.
One of ADS-TEC Energy’s flagship projects in Germany features a 1 GW grid connection and 2 GWh of storage, with potential expansion to 4 GWh. Speidel added, “We are very satisfied with this project’s progress in 2025. The grid operator has obtained commitment for the grid connection and further planning and permissions are progressing at full speed. In 2026, we aim to reach ‘ready-to-build’ status,” added CEO Thomas Speidel.
Large-scale battery storage systems are essential for grids with high shares of wind and solar power, as they store surplus renewable electricity, smooth load peaks and stabilize the network. They also create revenue streams through energy trading and ancillary services. ADS-TEC Energy’s solutions combine advanced lithium-ion battery modules with intelligent energy management software to support multiple use cases simultaneously and optimize performance across different markets.
Source: Business Wire
