A review of various standards, concerning distributed generation, and different Active Harmonic Compensation (AHC) or Active Power Filtering (APF) methods are presented in this paper. Short overview of each control method is given. The experimentation results from various publications are taken into account evaluating the feasibility of an AHC algorithm to be integrated in a typical commercially available grid-connected Photovoltaic inverter. The comparison results are presented in a table. The results of this paper can be used for further investigation in deciding which particular algorithm to try to implement and experiment with.