This article is about concept of electronic service that detects violations of normality in the creating and using of terminology units and provides recommendations for term using. This concept is adapted for specialists in electric power engineering and can be used for websites about this industry. Using these websites ensure compliance with linguistic norms in professional communication. Scheme of functioning of terminological online assistant for electric power engineering specialists is developed. The search and terms adding algorithm of terminological online assistant for electric power engineering specialists is described in this article. Entering a term into the search box, checking normality of term using database system, proposing list of recommended term equivalent, adding term to database system and giving results are the main components of developed algorithm.