Consumers don't usually use raw sources of energy from nature. The energy sector converts primary energy into various energy currencies. These easy to use carriers of energy like electricity, power society. The chart below shows which type and how much of each end use energy a country uses. Wealthy countries have access to electricity and access to non-solid fuel; lesser developed countries often use biomass. Burning fuels, whether at a distant power plant or directly in the home like with charcoal, contributes to air pollution and climate change problems.