Wikipedia
Comgás is a Brazilian gas distributor focused on São Paulo state. It is Brazil's biggest gas distributor, with around 770,000 residential, commercial and industrial customers, as of 2004, who receive gas through about of pipelines. Comgás was founded in 1872. The company had been wholly owned by the São Paulo state-owned power generation utility, Companhia Energética de São Paulo until April 1999, when CESP's stake was sold to the British BG Group and to Royal Dutch Shell. Comgas sells gas under a 30 year franchise, with a potential for a further 20 years.
Brazilian conglomerate Cosan owns 60.1% of Comgas's stock, and Shell 18.2%. The remainder is publicly traded on BM&F Bovespa. Cosan acquired its stake from BG Group in November 2012 for $1.7 billion.