The February issue of “FotoVolt” is online. The special coverage "2025, Year Zero of the Battery System Era in Brazil”, on page 22, shows that the national energy storage market is expanding, driven by falling battery cell prices and the possibilities of new capacity auctions. In addition, the long-awaited regulation should stimulate investments and accelerate the implementation of systems, both behind the meter and the electrical grid. Read on page 34 the article "Lithium-Ion Batteries: What Solution Will Succeed Them?", showing that researchers are already looking for alternatives to conventional methods of lithium-ion technology, predominant in energy storage applications since its commercial introduction in the 1990s. What technology will come next? Furthermore, on page 50, the article "Optical Sensing for Perimeter Protection of Photovoltaic Plants," showing that, with the advancement of photovoltaic generation plants in the country, critical challenges arise, such as the security of the installations, in which the perimeter security of the plants stands out and addresses modern technologies available for this market. This issue also brings the update “Micro Inverters” and “Structures for PV roof panels mounting” buyer’s guides.