In Canada, motor vehicles are primarily powered by gasoline or diesel fuel. Other energy sources include ethanol, biodiesel, propane, compressed natural gas (CNG), electric batteries charged from an external source, and hydrogen. Canada, unlike most countries, has excise taxes and other taxes on gasoline, diesel, and other liquid and gas motor fuels, and also taxes electricity at various administrative levels. Most provinces and territories in Canada also have taxes on these motor fuels, and some metropolitan areas such as Montreal, Greater Vancouver, and Victoria impose additional taxes.