The invention relates to a method for controlling an electricity feed to an electricity grid (12) from a load side of an electric circuit (5), comprising the steps of: a) Providing a electricity feed with an associated feed duration to a controller (13) of an electric power converter (7); b) The controller (13) commissioning the electric power converter (7) to provide the electricity feed, until the electricity feed and feed duration is provided anew or until the feed duration expires. The invention further relates to a system for controlling an electricity feed of an electric source.