Canada has access to all main sources of energy including oil and gas, coal, hydropower, biomass, solar, geothermal, wind, marine and nuclear. It is the world's second largest producer of uranium, third largest producer of hydro-electricity, fourth largest natural gas producer, and the fifth largest producer of crude oil. In 2006, only Russia, the People's Republic of China, the United States and Saudi Arabia produce more total energy than Canada. Despite being a net energy exporter, Canada also imports energy products. $24.5 billion of energy products were imported in 2004.