no, gas is bought in tanks, the gas tank is the source of power for the stove and oven, eletric induction or resistor stoves are rare, eletric ovens are somewhat common, water is not heated centrally, the showers heat the water with eletrical resistors, and thanks to brazillian ingenuinity have a fame for having extreme poor and unsafe wiring which results in some accidental deaths by eletrecution during showering (still quite rare though), water tap is not heated, and thus cold during winter, no risk of it freezing in the pipes in the vast majority of brazil, it is not fun cleaning the dishes with water at 15°C during the winter