Building and Using Key Tools for Energy Market Operation Part 2 – Portuguese case study

The study focuses on the circumstances that lead to load research, including the need for efficient planning and exploration of power systems, general grouping of consumers, and better market knowledge to face market competition. Accurate estimation of global load diagrams is crucial for efficient planning and exploration of power systems. The study presents a global load diagram for January 2-8, 2006, showing the load profiles for different voltage levels, including Very High Voltage (VHV), High Voltage (HV), Medium Voltage (MV), Low Voltage (LV), and Small Low Voltage (SLV). The Portuguese Electricity System is governed by the "New" Electricity Law, Dec. Law 29/2006, which introduced separation between network activities and retailing, creation of the default supplier to supply universal service obligation, and the right of consumers to choose their retail supplier. The law also established general principles of tariff regulation, including equal treatment and opportunities, tariff uniformity, and implementation of incentives for regulated companies to improve economic efficiency, security levels, and quality of service. The tariff structure in Portugal consists of several components, including the Tariff for the Global Use of the System (TGUS), Tariff for Use of the Transport Network (TUTN), Tariff for Use of Distribution Network (TUDN), and Tariff for Network retailing (TNR). The final prices for end users are determined by the sum of these tariff components, including fixed terms, contracted power, peak power, peak hours, energy, and reactive energy. The study presents a detailed breakdown of the end user tariffs, including fix term, contracted power, peak power, peak hours, energy, and reactive energy prices for different time periods, such as norma valley hours and super valley hours. The prices are presented in euros per month, kilowatt per month, kilowatt per hour, and kilovar hour. The BiH REAP - Key Tools Part 2 - Portuguese case study aims to provide a comprehensive understanding of the Portuguese electricity system, including the tariff structure, load diagrams, and market knowledge. The study is expected to contribute to the development of new consumer services and the application of hourly tariffs without hourly meters for small consumers.