Russia has been widely described as an energy superpower; as it has the world's largest natural gas reserves, the second-largest coal reserves, the eighth-largest oil reserves, and the largest oil shale reserves in Europe. It is the world's leading natural gas exporter, the second-largest natural gas producer, and the second-largest oil exporter, and producer. Fossil fuels cause most of the greenhouse gas emissions by Russia. The country is the world's fourth-largest electricity producer, and the ninth-largest renewable energy producer in 2019. Russia was also the world's first country to develop civilian nuclear power, and to construct the world's first nuclear power plant. In 2019, It was the world's fourth-largest nuclear energy producer.