Dynamic energy systems have trouble ensuring that security and performance are good because of uncertainty, nonlinear behavior, and changing operating conditions. Adding renewable energy sources requires advanced management strategies that can change as demand changes. This chapter examines how fuzzy logic techniques can be used to create strong and flexible controllers for dynamic energy systems. Fuzzy Logic provides a useful way to deal with uncertainty and imprecision, making it easier to make the right choice when things are changing. This chapter gives a full overview of how to design, build, and test fuzzy logic-based controllers. It also discusses how they can help improve power optimization, control, and reliability by using renewable energy sources. Fuzzy logic works well in real-life case studies and experiments that show how it can provide stable and efficient power control. The chapter also discusses how fuzzy logic could help improve energy systems by linking theory to practice.