The world’s only super power is the USA. A measure of a nation’s economic might is the amount of Electricity the country produces.

The UK produces 335 TW/h (TeraWatt/Hours)

The USA produces 5202 TW/h (TeraWatt/Hours)

That is over 15 times more than the UK

The USA produces 18.3% of the world’s electricity, the UK makes produces 1.4% of the world’s electricity.