Marek has more than 17 years of experience in battery energy storage, from the early days of utility-scale batteries to leading roles in the growth of the industry, including co-founding Fluence.

The conversation gives us a high-level but very practical view of where the BESS market has come from and where it may be heading.

During the extract, we touch on several key topics shaping the next phase of battery energy storage:

energy density, sodium-ion batteries, AI-driven electricity demand, and the evolution of utility-scale BESS.

The goal of this lesson is not to go deep into calculations or detailed technical design, but to understand the strategic direction of the market and the type of questions that professionals in the BESS sector need to start asking.

This content is especially useful to connect technology trends with real market implications: project design, scalability, future chemistries, system integration and the role of storage in an increasingly electrified world.