STG 30Recommended practices and specifications for Cathodic Protection (CP) do not include well defined methods or formulas for how to handle anode interference. Anode interference occurs when anodes are mounted close to each other and will reduce the current output pr anode. The loss of anode current will depend on distance between anodes how many anodes local or remote protection etc. The different methods found will be described and compared with results from CP modelling. Clarification on the most important influence factors will be given and recommendations for methods to handle anode interference will be proposed.Keywords; Cathodic protection anode interference