ADS‑TEC Energy announced a new 10 MW/20 MWh battery‑storage system to be installed at the substation of public utility Stadtwerke Mühlacker in Mühlacker, Germany. The installation will use four BESS5000 containers and is slated for construction in 2026, with full operation expected later that year.
The contract represents a significant expansion of ADS‑TEC’s BESS portfolio in Europe and marks a key step in the company’s transition from a hardware supplier to a platform provider of energy‑flexibility services. By adding a multi‑year recurring revenue stream, the project strengthens the company’s position in a market where grid constraints are driving demand for battery‑buffered solutions.
ADS‑TEC’s financial backdrop shows that the company generated €14.6 million in revenue for the first half of 2025, with service revenue rising to €4.6 million—almost three times the €1.6 million recorded in the same period of 2024. Despite a negative gross margin of –7.65 % and ongoing margin pressure, the firm maintains a solid cash position of €37.9 million, positioning it to invest in new projects such as this one.
CEO Michael Rudloff emphasized that battery storage must be “safe, reliable, and economically viable” while providing grid stability and flexibility to meet the growing demand from electric mobility, heat pumps, and digital infrastructure. He highlighted the importance of flexibility as a key driver for future growth.
The project will deliver grid‑stabilisation services, peak‑shaving, and energy‑trading opportunities, creating a recurring revenue stream for ADS‑TEC’s battery‑buffered platform. While the company continues to face margin challenges, the new contract is expected to offset some of the negative profitability pressure and support the company’s long‑term shift toward service‑based revenue.
The partnership with a major German utility signals confidence in ADS‑TEC’s technology and underlines the company’s strategy to capture a larger share of the European battery‑storage market, where demand for flexible, grid‑supporting solutions is accelerating.
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