TESVOLT AG, a leading German provider of energy storage systems and battery park solutions, has strengthened its equity base by converting €18.6 million worth of convertible bonds into equity. The conversion, carried out among key existing investors, enhances the company’s financial flexibility and provides additional headroom for future growth and investments.
The move follows a strong financial performance in 2025, during which TESVOLT reported 50% revenue growth year-on-year, driven by rising demand for energy storage solutions and improving market returns. Falling lithium battery prices and expanding applications for energy storage systems have further accelerated profitability across the sector.
Daniel Hannemann, CEO and co-founder of TESVOLT, highlighted that declining component prices and the growing importance of grid flexibility are boosting the rollout of storage projects across Germany. He added that TESVOLT is well positioned with its integrated offering that includes battery storage systems, system integration, operation, and the marketing of storage flexibility on power exchanges, enabling customers to generate high exchange revenues.
The equity strengthening follows significant investments by TESVOLT in new product development, the expansion of its subsidiary TESVOLT ENERGY for electricity trading, and the expansion of its headquarters in Wittenberg.
According to data from RWTH Aachen University, Germany’s total installed energy storage capacity reached around 24 GWh by the end of 2025, with new installations rising by 47% in the industrial segment and 81% in the utility-scale segment compared with 2024.
With electricity demand expected to surge due to AI applications, data centers, and broader electrification, TESVOLT expects the construction of mid-sized and large-scale storage projects to accelerate significantly. The company believes the industry is only at the beginning of the next major energy storage growth cycle.
Founded in 2014, TESVOLT AG is a leading system integrator for battery storage solutions across commercial, industrial, and utility-scale projects. The company offers planning, implementation, and electricity marketing services through its subsidiary TESVOLT ENERGY, positioning itself as a one-stop solution provider in the energy storage market.
