For the percentages of satisfied customers on the most important factors of quality of services and comparison with the results of the ELECTRICITY SERVICE RATING Customer satisfaction as regards the electricity supply service (sale and distribution) was recorded in April/July and November/ December 2018 with comprehensively 13,400 people contacted by telephone, representing customers on the more protected market and on the free market: 8,900 for sales-related aspects, managed by Acea Energia, and 4,500 for technical and management aspects of the distribution service (network), managed by Areti.