ADS‑TEC Energy PLC announced the signing of several new battery‑energy‑storage contracts in Germany and Austria, adding 20 MW of power and 40 MWh of storage capacity to its portfolio. The agreements, signed in December 2025, are now in the detailed planning phase, underscoring the company’s rapid expansion of its BESS business.
The German contracts include a 5‑MWh BESS5000 system for AAE Naturstrom in Kötschach‑Mauthen, Austria, which will be paired with a photovoltaic array to store and flexibly market solar power. In Germany, ADS‑TEC is advancing a 1‑GW grid‑connected project with a 2‑GWh storage capacity, with a potential expansion to 4 GWh. The company also secured a 5‑MWh BESS5000 for Stadtwerke Ludwigsburg‑Kornwestheim to support a biomass power plant and provide ancillary services.
These wins reinforce ADS‑TEC’s strategy of combining battery‑buffered technology with advanced energy‑management software. The recurring revenue model—derived from energy trading, peak shaving, and grid services—positions the company to capture multiple revenue streams from each installation. Management noted that the contracts reflect growing confidence from utilities in ADS‑TEC’s experience, proven references, and technical execution capabilities across the value chain.
Financially, the company’s first‑half 2025 revenue of €14.6 million and a positive adjusted EBITDA of €2.2 million demonstrate a solid foundation for scaling. The 1‑GW/2‑GWh project is expected to generate annual revenues of approximately €230 million, highlighting the high‑margin potential of large‑scale BESS deployments. Analysts have projected a 183 % increase in sales for fiscal 2025, underscoring the market’s optimism about ADS‑TEC’s growth trajectory.
The announcement has been well received by investors, with the company’s stock trading at $12.72 on December 30, 12.72, reflecting a 1.68 % rise in the past 24 hours. While the market reaction is modest, the positive sentiment is driven by the company’s expanding project pipeline and the strategic importance of battery storage in Europe’s decarbonisation efforts.
ADS‑TEC’s CEO Thomas Speidel emphasized that “our battery energy storage business gained significant traction toward the end of the year. These newly signed projects reflect the trust that energy utilities are placing in us, and our long‑standing experience and technical execution capabilities are key differentiators.”
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