From ESS News

With the growing expansion of photovoltaics and wind power, cost-effective long-duration energy storage (LDES) is becoming increasingly important for a secure power supply. Iron-salt batteries are a promising LDES technology, and German specialist VoltStorage has now reported progress in its development work.

“The positive development stages, tests and measurements so far, as well as the international recognition from science and industry, underpin the overall concept…