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Series1, NATURAL GAS,
21.20%, 21.2%
Series1, OIL, 31.30%,
31.3%
Series1, COAL, 28.50%,
28.5%
Series1, RENEWABLES,
13.80%, 13.8%
Series1, NUCLEAR, 4.80%,
4.8%
Series1, OTHER *, 0.30%,
0.3%
NATURAL GAS
OIL
COAL
RENEWABLES
NUCLEAR
OTHER *
(a)
Series1,
Renewable
municple waste,
1.1%, 1.1%
Series1, Liquids
biofuels, 5.6%,
5.6%
Series1, Solid
biofuels /
charcoal, 91.1%,
91.1%
Series1,
Biogases, 2.2%,
2.2%
Renewable municple waste
Liquids biofuels
Solid biofuels / charcoal
Biogases
(b)
Fig. 1 Distribution of energy supply by 2014: a Fuel shares in world total primary energy supply;
and b Product shares in world renewable energy supply (IEA 2016). Note: * Others include energy
sources such as non-renewable wastes, peat, oil shale and chemical heat. ** Details distribution of
Biofuels & Waste energy supply according to categories is represented by the pie chart
(an international environmental agreement that subject to keep the global warming
below 2 °C (Ra and Kim 2014; Climate action 2015).