ERSE´s Tariff Code (RT), approved by ERSE, defines the allowed revenues of the regulated companies of the electricity sector to be recovered by the electricity tariffs, the tariff structure, the procedures for setting, amending, and publicizing the tariffs, and also the obligations and procedures for providing information to ERSE.

These allowed revenues seek to encourage companies to efficiently perform their activities, that is, to optimize the quality of the services provided in the medium and long term, at the lowest cost to consumers, thus ensuring the economic sustainability of these activities. The revenues to be recovered through the application of tariffs may differ from the allowed revenues in view of various circumstances arising from the legislative and regulatory framework.

In fact, the amounts of allowed revenue to each operator are not always recovered directly by applying a tariff to their activity, but rather by other operators within the scope of their activities, or by external entities. In these cases, ERSE guarantees that the allowed revenues are duly paid to the different agents along the tariff value chain, in respect of the legal framework. The tariffs for each activity are determined in such a way that its structure is, on the one hand, adherent to the structure of marginal or incremental costs and, on the other hand, that the allowed income in each activity is recovered.

The complementary rules and methodologies, to the regulation and approval of the accounts of regulated companies, can be consulted in other rules.

ERSE´s electricity Tariff Code was approved by Regulation no. 828/2023, of 28 July, following Public Consultation no 113, published in the Official Journal. 

The previous versions can be consulted at ERSE's Normative Acts.

Tariff Code Consolidated version – only available in Portuguese

Complementary standards (templates) for the electricity sector, approved by the ERSE Board of Directors, under the terms of Instruction No. n.º 4/2019, of 9 May, for the purpose of reporting the regulatory information foreseen in articles 15, 16, 134, 170, 207, 217 of the Electricity Sector Tariff Regulation:

• Commercial Agent – Real and forecast standard

Excel files to be filled in by REN Trading (Commercial Agent) with financial and accounting information, in order to define the allowed income.

• National Transmission Network Operator (RNT) – Real, forecast e GGS costs.

Excel files to be completed by REN (RNT Concessionaire) with financial and accounting information, in order to define the allowed revenues.

• Pilot Zone Concessionaire –  Real e forecast standard

Excel files to be filled in by the Concessionaire of the Pilot Zone with financial and accounting information to define the allowed revenues.

• National Distribution Operator (RND) – Real e forecast standard

Excel files to be filled in by EDP Distribuição (RND Concessionaire) with financial and accounting information to define the allowed revenues.

• Supplier of last resource (SLR) –  Real e forecast standard

Excel files to be filled in by EDP SU (SLR) with financial and accounting information, in order to define the allowed revenues.

• Transmission and distribution concessionaire in the Autonomous Region of the Azores (RAA) –  Real/forecast standard

Excel files to be filled in by the EDA (Transmission and Distribution Concessionaire of RAA) with financial and accounting information to define the allowed revenues.

• Transmission and distribution Concessionaire of the Autonomous Region of Madeira (RAM) – Real e forecast standard

Excel files to be filled in by the RAM (Transmission and distribution Concessionaire of the Autonomous Region of Madeira) with financial and accounting information, in order to define the allowed revenue.

• Switching Operator (OLMC) – Real/forecast standard

Excel files to be filled in by the OLMC with financial and accounting information, in order to define the allowed revenue.