The paper presents the results of analysis and systematization of the main factors determining the cathodic protection parameters of underground metal communications. The most comprehensive and detailed consideration was given to the influence of preparatory measures in accordance with DIN 30676 on anti-corrosive protection of power pipelines. These measures included: improving the insulation quality (increasing the electrical resistance of coatings and ensuring their integrity), ensuring the high longitudinal conductivity of pipelines, eliminating the contacts of underground metal structures with other grounded structures. Practical recommendations for reducing power losses in cathodic protection systems are proposed on the basis of the conducted research. Additionally, we have confirmed the expediency of using measures from DIN 30676, dedicated to the design of anti-corrosive protection, for improving the efficiency of national underground metal pipelines of power systems.