Data on the carbon-intensity of each nation's electricity mix are from the International Energy Agency. The carbon emissions of various fuels are those used by the U.S. Energy Information Administration and the North American nonprofit collaborative, The Climate Registry.
Credits: Design by Stefan Estrada. Illustrations by H2H Graphics & Design. Text by Matthew Lewis, Mason Inman, David LaGesse, Barbara Mulligan, Mary Anne Mulligan, Jeff Smith, Ker Than, and Marianne Lavelle.
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More About Energy
The National Geographic initiative is a call to action to become actively involved, to learn more and do more—to change how we think about and consume energy so that we can all help tackle the big energy questions.
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See which countries pay the most for tax breaks and other mechanisms that keep fossil-fuel prices down.
How much could you save yourself, and the world, by switching to more efficient bulbs? Use this tool to find out.
An interactive view of how regions and countries around the world generate their power.
Learn more about the energy-saving projects being funded as part of National Geographic's Great Energy Challenge program.
Cities and Air Pollution
Experts convened to discuss a critical conundrum facing the giant South Asia nation.
Vote and join the debate over solutions aimed at clearing the air.
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The Great Energy Challenge
See how you measure up, and find out how making simple changes at home can help.
How much can you save yourself, and the world, by switching to more efficient bulbs?
The Big Energy Question
What innovation should shape transportation in the future?