27.02.2026
On February 25, the closed online meeting “BESS Insider” took place, bringing together 32 representatives of Energy Club member companies. This event was organized as a platform for open exchange of experience. The goal of the meeting was to give club members an opportunity to openly discuss real cases, technical connection challenges, and the economics of energy storage system (BESS) projects.
During the meeting, Roman Dremlyukh, director of Power U LLC, focused the participants’ attention on the construction of microgrids. He called for a change in the approach to perceiving storage systems and emphasized that when creating their own energy system, the customer is actually buying not a “battery in a box” or a “piece of iron” in the form of an inverter, but controllability, stability, and predictability.
The main difference between a local enterprise network and a large energy system is the lack of a “stability cushion.” Even the startup of a large motor with a high inrush current immediately causes disturbance. Therefore, the key role in the system is played by the power conversion system (PCS) control logic.
As the expert noted, most mass-market inverters were designed for a stable external grid — they only adapt to it. However, in a microgrid, a professional PCS must independently form the internal network, maintain frequency, stabilize voltage, and guarantee seamless transitions to autonomous mode.
Roman cited a real-world case of a logistics company that, after purchasing a storage unit, was forced to seek a solution worth 50,000 euros just to smooth out transient processes between its own generation and BESS. These costs could have been avoided if the correct architecture had been chosen from the start, where all control functions are already “built-in” to the equipment itself (for example, in professional solutions from European or American brands).
Separately, the expert emphasized the critical importance of cybersecurity: a microgrid is a digital system that must remain stable even without an internet connection or cloud services. The network is needed exclusively for monitoring, not for the facility’s vital functions. Summing up, the speaker noted that the market is inevitably changing: soon, enterprises without their own generation, storage, and management systems simply will not be able to remain competitive.
