ADS‑TEC Energy PLC announced that it has been selected by Stadtwerke Ludwigsburg‑Kornwestheim (SWLB), a municipal utility in southern Germany, to supply a 5‑megawatt‑hour (MWh) battery‑energy‑storage system (BESS) for its wood‑fired combined heat and power plant in Nürtingen. The BESS5000 system, with a nominal capacity of 5,015 kWh and a rated power of 2,500 kW, will provide grid‑support services, peak‑load shaving, and renewable‑energy storage for the local distribution network. Construction is slated for 2026, with revenue recognition expected once the system becomes operational.
The deal underscores ADS‑TEC’s strategy to scale its modular BESS platform across Europe. By partnering with a regulated utility, the company secures a stable, long‑term revenue stream from ancillary services while demonstrating the scalability of its technology. The collaboration with engineering partner SCHNEPF Group will handle technical planning, authorization, and cybersecurity integration, ensuring seamless integration into SWLB’s existing infrastructure.
ADS‑TEC’s financial performance in FY 2024 provides context for the significance of the contract. Revenue rose to €110.0 million, a 2.5% increase from FY 2023, and the company achieved its first positive adjusted EBITDA of €2.2 million after a €‑38.1 million loss the year before. Gross profit reached €19.4 million, translating to a 17.7% gross margin, up from a gross loss in FY 2023. Cash and cash equivalents stood at €37.9 million as of September 19 2025, up from €22.9 million at year‑end 2024. Analysts project a 183% revenue growth for the current fiscal year and have set a target price of $18, reflecting confidence in ADS‑TEC’s recurring‑revenue model.
The BESS5000 will deliver a range of grid‑support services, including frequency regulation, voltage support, and reserve capacity, which are increasingly valuable as Germany’s energy transition accelerates. Revenue from the contract is expected to begin once the system is commissioned in 2026, with a projected contract value that has not been disclosed. SCHNEPF Group’s role will encompass detailed engineering, regulatory approvals, and cybersecurity safeguards, ensuring that the system meets stringent German grid standards.
Management highlighted the contract as a milestone in ADS‑TEC’s transition to a platform‑based business. COO Michael Rudloff noted that the project demonstrates how municipal utilities can benefit from decentralized battery storage, while CEO Thomas Speidel emphasized that 2024 was a “milestone year” despite headwinds in the electric‑vehicle sector, and that the company is moving into a resilient, long‑term growth phase supported by new capital and recurring revenue streams.
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