Time-variable grid fees (variable Netzentgelte) in Germany are reshaping energy cost structures by incentivizing flexible consumption based on grid demand. Starting April 1, 2025, businesses and homeowners can reduce costs and support grid stability by leveraging energy management systems (EMS) that automate load shifting, tariff optimization and compliance with evolving regulations like §14a EnWG. As variable grid fees take effect, adopting AI-driven energy strategies will be key to maximizing efficiency and minimizing operational expenses