Galp Energia, SGPS, S.A. is a Portuguese multinational energy corporation, headquartered in Lisbon, Portugal. Galp consists of more than 100 companies engaged in every aspect of the oil and natural gas supply, hydrocarbon exploration and production; refining, trading, logistics and retailing; co-generation and renewable energy. Galp was founded in 1999 through the merger of Petrogal, Gás de Portugal and Transgás. As of 2020, it is the largest oil and gas group in Portugal, where it distributes gas and sells petrol. Wikipedia