With the increasing number of distributed generators which working with renewable power sources, where it is difficult to make power output regulation from the primary source side, is the problem of the output power adapting according to the consumption requirements increasingly important. Therefore, it will be necessary to involve these sources to the transmitted power regulation in the electricity supply system. If these resources are designed to operate in island mode, the regulation of them is directly necessary. The paper deals with the regulation possibilities of these resources, so that they are able to maintain the quality parameters of supply.