Ex-Fluence alumnus Marek Kubik sat down with Energy-Storage.news at last month’s Energy Storage Summit 2026 in London to talk big picture BESS technology trends, including energy density, LDES and sodium-ion.
Kubik is an independent board advisor and was one of the founding team at system integrator Fluence, which he left in late 2023. He has since taken a role as director of energy storage at Sau...
The BESS industry is facing a shift with lithium-ion batteries being deployed for long durations (8-hours or more) and specialization in cells optimized for these purposes becoming more common. This trend is driven by the growing importance of day-to-night solar load shifting, which has previously been provided by pumped hydro. Sodium-ion technology also offers potential benefits, including operation at high and low temperatures without need for heating or cooling, but its cost remains a signifi...