The purpose of this final project is: To determine customer perceptions of service quality at new installation and added power in serving customer to the PT. PLN (Persero) Area Semarang are seen through the five dimensions of service, Reliabiliy, Responsiveness, Assurance, Empaty, and Tangible. The sampling technique used is the probability sampling method. Data collection methods are interviews, questionnaires, observation, and literature. The results showed that the customer perception of service quality at new installation and added power in PT. PLN (Persero) Area Semarang well because most customers give positive perceptions of the quality of new services and added power plug.