José Augusto Fontoura Costa and Marilda Rosado de Sá Ribeiro, Introduction -- Marilda Rosado de Sá Ribeiro, Legal regulation of petroleum upstream in Brazil -- Clarissa Brandão and Renato Barcellos de Souza, Brazilian regulation of petroleum downstream -- Marcos Cintra, Hirdan Katarina de M. Costa, Eduardo G. Pereira and Edmilson Moutinho dos Santos, Regulatory framework of upstream and onshore unconventional gas in Brazil -- Thiago L. F. Brito, Hirdan K. M. Costa, Raul P. Pinto, Edmilson M. dos Santos, Midstream regulation in Brazil: main issues in pipeline natural gas system -- Maria D'Assunção Costa, Hirdan K. M. Costa and Edmilson M. dos Santos, Regulatory challenges of natural gas downstream in Brazil -- Raphael Gomes and Renato Poltronieri, The electricity sector and the structure of the short-term market in Brazil -- Wanderley Fernandes, Legal regulation of the distribution of electricity in Brazil -- Vinicius Fonseca Soares, Regulatory framework of wind power in Brazil -- Solange Teles da Silva, Carolina Dutra and Lucas Noura de Moraes Rêgo Guimarães, Solar energy and the dawn of 'solar cities' in Brazil -- Luizella Giardino Barbosa Branco, Challenges of social and environmental certification of biofuels in Brazil -- Leonam Guimarães, Carlos Feu and Olga Mafra, Regulatory framework of nuclear energy in Brazil -- Fernando Rei and José Goldemberg, Main issues of biomass energy regulation in Brazil -- Welber Barral, Renata Amaral and Thiago Soares, International trade in energy: a glance at selected issues.