Electricity is a key energy source today, with rising household use of heavy loads like ACs and washing machines. Unlike industrial loads, which are balanced and follow fixed patterns, household loads are increasingly non-linear due to electronic devices and inverter technology. This leads to harmonic disturbances in the power system. The proposed system aims to implement a Shunt Active Power Filter using the PI technique to mitigate harmonics and noise from non-linear, unbalanced, and mixed loads.