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How much of the world’s electricity is still reliant on coal, oil and gas? Flick the switches to see where the world would go dark without fossil fuels (FF), which countries rely the most on nuclear (N), and who is using entirely renewable power (R) to keep the lights on.

Data on the share of fuel types used to produce electricity in each country was collated from International Energy Organisation. Regional estimates were used for countries where country-specific data wasn’t available.