United States
In the United States About 63% of this electricity generation was from fossil fuels (coal, natural gas, petroleum, and other gases). About 20% was from nuclear energy, and about 17% was from renewable energy sources.
Singapore
As of 2015, Singapore uses natural gas (95%) and waste (4%) for power stations' fuel. Oil used to contribute 23% in 2005 but now is down to 1%.