Decreto-Lei n.º 15/2022, de 14 de janeiro, Diário da República n.º 10/2022, Série I de 2022-01-14, Estabelece a organização e o funcionamento do Sistema Elétrico Nacional, transpondo a Diretiva (UE) 2019/944 e a Diretiva (UE) 2018/2001 - Versão Consolidada

This decree-law establishes the legal framework for how the national electricity system is organized and managed in Portugal. It aims to modernize the energy sector by implementing key European Union directives regarding common rules for the internal market in electricity and the promotion of renewable energy. The regulation affects energy producers, grid operators, and electricity suppliers. It introduces new rules for market operation, consumer rights, and the integration of renewable energy sources into the national power grid.