The electricity and natural gas suppliers are the entities that sell electricity and/or natural gas to the final consumer, and the selling price is determined by each supplier operating in the Mainland Portugal market.
With the liberalization of electricity and natural gas market, the final consumer can choose the supplier that best suits his needs, and can change as many times as he wants, as long as this change is not simultaneous with another switching process.
Consult the list of energy suppliers operating in the domestic market of Continental Portugal.